Concern has been raised about whole-body vibration training (WBVT), which activates skeletal muscles by
employing vibrations rather than a mass load or dynamic exercise. As vibration massage and local vibration applied
to muscles show promising benefits, vibration treatment and exercise became widely used in rehab. Studies are
still being conducted to fully comprehend the cumulative impacts and long-term safety of this training program.
This study gives an outline of WBVT, explaining its physiology and advantages as well as some safety aspects,
contraindications, and instructions for applying it in a clinical environment.
This document discusses muscle energy technique (MET), a manual therapy procedure that involves voluntary muscle contraction against resistance applied by a therapist. It describes the types of muscle contractions involved - isotonic, eccentric, concentric, and isometric. MET uses post-isometric relaxation and reciprocal inhibition to facilitate muscle lengthening. Indications for MET include acute muscle spasm and restricted joints, while contraindications are acute injuries and unstable joints. Benefits of MET include restoring normal muscle tone, strengthening weak muscles, and improved joint mobility. Guidelines are provided for safely applying light contractions over multiple repetitions.
This document discusses muscle energy technique (MET), a manual therapy that uses precisely controlled voluntary muscle contractions against resistance applied by a therapist. It describes the types of muscle contractions used in MET, including isotonic, eccentric, concentric, and isometric contractions. MET can utilize post-isometric relaxation or reciprocal inhibition to lengthen or relax muscles. The document provides examples of procedures and discusses indications like acute muscle spasm or restricted joints, as well as contraindications like fractures or unstable joints. Potential benefits of MET include restoring normal muscle tone, strengthening weak muscles, and improving joint mobility.
Delayed-Onset Muscle Soreness Alters the Response to Postural PerturbationsNosrat hedayatpour
The purpose of this study was to assess the EMG activity
of knee muscles during destabilizing perturbations performed
before, immediately after, and 24 and 48 h after eccentric
exercise.
Strengthening in upper motor neuron lesions is an important part of rehabilitation of the neurological disorders. Your understanding of strengthening in UMN lesions will be clarified by this presentation, which explains how strengthening in musculoskeletal and neurological illnesses differs.
In this brief review, neuromuscular adaptations to different forms of exercise are reviewed, the positive training effects of eccentric exercise are presented, and the implications for training are considered.
The document discusses the NEMES-BOSCO SYSTEM, a whole-body vibration training machine. It works by applying high-frequency vibrations to the body, causing involuntary muscle contractions through tonic vibration reflex. This activates muscles at levels 200-300% higher than voluntary contractions alone. Vibration training provides muscle and strength gains similar to resistance training, but in a much shorter time and without overloading joints or tendons. It has applications in sports training, rehabilitation, and addressing issues like osteoporosis or mobility for elderly individuals.
Good Vibrations by Jon Denoris for Kinetica Sportsdenoris
This presentation is a review I put together for www.Kinetica-Sports.com on the pro's and con's of whole body vibration training. I believe it's certainly an exciting area, albeit one which unfortunately is prone to the usual fitness "fads" and exaggerated claims especially regarding weight loss / body fat loss.
Good Vibrations by Jon Denoris for Kinetica Sportsdenoris
This presentation is a review of research on vibration training which I have compiled for Kinetica-sports.com. This is a potentially exciting area, albeit one which is prone to the usual "fitness fads" and exaggerated claims especially around it's usefulness for weight loss and body fat reduction.
This document discusses muscle energy technique (MET), a manual therapy procedure that involves voluntary muscle contraction against resistance applied by a therapist. It describes the types of muscle contractions involved - isotonic, eccentric, concentric, and isometric. MET uses post-isometric relaxation and reciprocal inhibition to facilitate muscle lengthening. Indications for MET include acute muscle spasm and restricted joints, while contraindications are acute injuries and unstable joints. Benefits of MET include restoring normal muscle tone, strengthening weak muscles, and improved joint mobility. Guidelines are provided for safely applying light contractions over multiple repetitions.
This document discusses muscle energy technique (MET), a manual therapy that uses precisely controlled voluntary muscle contractions against resistance applied by a therapist. It describes the types of muscle contractions used in MET, including isotonic, eccentric, concentric, and isometric contractions. MET can utilize post-isometric relaxation or reciprocal inhibition to lengthen or relax muscles. The document provides examples of procedures and discusses indications like acute muscle spasm or restricted joints, as well as contraindications like fractures or unstable joints. Potential benefits of MET include restoring normal muscle tone, strengthening weak muscles, and improving joint mobility.
Delayed-Onset Muscle Soreness Alters the Response to Postural PerturbationsNosrat hedayatpour
The purpose of this study was to assess the EMG activity
of knee muscles during destabilizing perturbations performed
before, immediately after, and 24 and 48 h after eccentric
exercise.
Strengthening in upper motor neuron lesions is an important part of rehabilitation of the neurological disorders. Your understanding of strengthening in UMN lesions will be clarified by this presentation, which explains how strengthening in musculoskeletal and neurological illnesses differs.
In this brief review, neuromuscular adaptations to different forms of exercise are reviewed, the positive training effects of eccentric exercise are presented, and the implications for training are considered.
The document discusses the NEMES-BOSCO SYSTEM, a whole-body vibration training machine. It works by applying high-frequency vibrations to the body, causing involuntary muscle contractions through tonic vibration reflex. This activates muscles at levels 200-300% higher than voluntary contractions alone. Vibration training provides muscle and strength gains similar to resistance training, but in a much shorter time and without overloading joints or tendons. It has applications in sports training, rehabilitation, and addressing issues like osteoporosis or mobility for elderly individuals.
Good Vibrations by Jon Denoris for Kinetica Sportsdenoris
This presentation is a review I put together for www.Kinetica-Sports.com on the pro's and con's of whole body vibration training. I believe it's certainly an exciting area, albeit one which unfortunately is prone to the usual fitness "fads" and exaggerated claims especially regarding weight loss / body fat loss.
Good Vibrations by Jon Denoris for Kinetica Sportsdenoris
This presentation is a review of research on vibration training which I have compiled for Kinetica-sports.com. This is a potentially exciting area, albeit one which is prone to the usual "fitness fads" and exaggerated claims especially around it's usefulness for weight loss and body fat reduction.
This document discusses prosthetic trauma and the need for improved prosthetic devices that can restore stable and independent ambulation for persons with lower extremity amputations. It notes that over 500,000 people in the US live with lower limb loss and 130,000 lower limb amputations are performed annually. Current surgical procedures for amputation date back to the Civil War era and are not well suited for advanced prosthetics. State-of-the-art neural interfaces have been developed within this outdated surgical paradigm. True restoration of function requires an approach that considers the fundamental motor unit of agonist-antagonist muscle pairs for joint control.
This study aimed to investigate the neuromotor effects of transverse friction massage (TFM) on the quadriceps femoris tendon using surface electromyography, force sensors, and ultrafast ultrasound. Fourteen healthy males received TFM on their quadriceps tendon while fifteen controls rested. Signals were recorded before and after TFM/resting to analyze time delays related to excitation-contraction coupling, force transmission, and electromechanical delay during voluntary contractions. Results showed TFM increased the time of excitation-contraction coupling and electromechanical delay, while decreasing time of force transmission, suggesting TFM influences neuro-motor mechanisms and changes muscle and tendon stiffness. The study provides insight into how TFM applied
DETRAINING IN RELATION TO SKELETAL MUSCLE Dzevad Saric
Detraining occurs when there is a reduction or cessation of training, leading to partial or complete loss of physiological and performance adaptations. Periods of detraining are common for athletes during injuries or holidays. Muscle atrophy is characterized by a decrease in muscle mass and occurs due to inhibition of protein synthesis during inactivity. The degree of atrophy depends on the length of inactivity. While short detraining periods under 2 weeks may not affect muscle fibers, longer periods can decrease fiber size, especially in fast-twitch fibers. Maintaining some exercise during injury can help limit muscle atrophy.
Three applications of mechanical vibration to the quadriceps muscle for 10 minutes each over three consecutive days improved body balance in subjects who underwent ACL reconstruction, as shown by decreased length of trace, mean speed of shifts, and ellipse area when standing on the operated leg up to 90 days later. While leg force did not differ between treated and untreated groups, treated subjects showed greater confidence standing on the operated leg, suggesting vibration facilitated proprioceptive learning. The long-lasting effects may be due to conditioning of the neural network controlling the muscle and joint from association of voluntary contraction during vibration.
The document summarizes a study that investigated the effects of applying vibratory stimulation to the quadriceps muscle of subjects who underwent anterior cruciate ligament (ACL) reconstruction surgery. The study found that applying short periods of vibration for a few consecutive days led to improved balance and equilibrium over longer periods of time, as measured by various parameters, compared to a control group. While leg force was not significantly different between groups, the treated subjects showed a preference for standing on the operated leg, indicating the vibration helped them regain confidence in using that leg for balance. The long-lasting positive effects are believed to be due to improvements in proprioceptive control and learning in the central nervous system.
To Compare The Effect Of Proprioceptive Neuromuscular Facilitation and Static...ijtsrd
Background: Flexibility is an important physiological component of physical fitness and reduced flexibility can cause inefficiency in the workplace and is also a risk factor for low back pain. Increasing hamstring flexibility was reported to be an effective method for increasing hamstring muscle performance.Objective: To compare the effects of modified hold-relax proprioceptive neuromuscular facilitation stretching technique and static stretching on flexibility of hamstring muscle.Materials and Methods: In this comparative study 60 subjects were selected by convenience sampling and research design was comparative and experiment in nature. Subjects were selected on the basis of inclusion criteria. Subjects were divided into two groups, group A and group B allocating alternate subjects to group A and group B, 30 in each group. Group A was treated with Proprioceptive Neuromuscular Facilitation with cryotherapy and Group B was treated with Static Stretching with cryotherapy. Baseline assessment was taken on pre stretch, post stretch and after 24 hours using Active Knee Extension test and Modified back saver sit and reach test.Results: Both the groups showed significant improvement in hamstring flexibility. (p0.05).Conclusion: Thus we concluded that the Proprioceptive Neuromuscular Facilitation Stretching Technique and Static Stretching both are effective to improve flexibility of hamstring muscle and clinically both the interventions are equally effective. Tanu Kapila | Dilpreet Kaur | Jaspinder Kaur"To Compare The Effect Of Proprioceptive Neuromuscular Facilitation and Static Stretching on Flexibility of Hamstring Muscle: A Comparative Study" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017, URL: http://www.ijtsrd.com/papers/ijtsrd2266.pdf http://www.ijtsrd.com/other-scientific-research-area/other/2266/to-compare-the-effect-of-proprioceptive-neuromuscular-facilitation-and-static-stretching-on-flexibility-of-hamstring-muscle-a-comparative-study/tanu-kapila
This study investigated how localized muscle fatigue of the ankle plantarflexors affects spatial electromyography (EMG) patterns in the medial gastrocnemius muscle during walking and running. The researchers recorded high-density EMG from the medial gastrocnemius before and after subjects performed a calf raise task to induce fatigue. They found that after fatigue, peak EMG activity decreased but mean power frequency increased during locomotion. Additionally, the location of peak EMG shifted proximally compared to the pre-fatigue location, suggesting altered motor unit recruitment to distribute muscle loads. Despite these EMG changes, lower limb biomechanics were similar before and after fatigue.
Vibration therapy involves using a vibrating platform to transmit vibrations through the body. It has been shown to improve muscle strength, bone density, circulation, and range of motion. Vibration therapy was first used by Russian astronauts and allowed them to stay in space longer with less bone and muscle loss than American astronauts. It provides benefits similar to exercise but in a fraction of the time and can be used safely by people with medical conditions that prevent traditional exercise. Potential risks include back pain if vibrations are too intense.
bioDensity and Vibration Research ReviewGreg Maurer
This document reviews research on bioDensity isometric technology and whole body vibration. It finds that vibration exercise can help build strength, increase bone mass, improve organ function, balance, and quality of life for individuals aged 12 and older. Several studies show that short bouts of low-level vibration increased bone and muscle mass and reduced symptoms of conditions like osteoporosis, fibromyalgia, and chronic fatigue syndrome by stimulating blood flow and the release of hormones. Vibration exercise represents an effective non-pharmacological approach to improving health and functional ability, especially for the elderly.
To Compare The Effect Of Proprioceptive Neuromuscular Facilitation Program Ve...IOSR Journals
Abstract: Low back pain has been a matter of concern, affecting up to 90% of population at some point in
their lifetime, up to 50% have more than one episode. People of all age group can be affected by this menace
irrespective to their gender and quality of life. It has become one of the leading causes for the visit to physician
thus also puts a heavy burden on the currency of the country. Physiotherapy is the most widely used form of
treatment adopted for gaining relief from low back pain. The exercises include stretching, strengthening, range
of motion exercises, McKenzie therapy and core stability exercises other techniques like Proprioceptive
neuromuscular facilitation program etc. It has been concluded in various studies core stability exercises and
Proprioceptive neuromuscular facilitation are beneficial in low back pain patients but comparison of their effect
needs to be established to provide early and better relief from the disability. Therefore objective of the study was
to compare the effect of Proprioceptive neuromuscular facilitation program and Core stabilization exercises on
low back pain patients. 40 subjects aged 30 – 50 years with low back pain for more than 4 weeks were made
part of the study based on inclusion and exclusion criteria and were then divided into two groups named A, B.
Group A received Proprioceptive neuromuscular facilitation and group B received Core stabilization exercises
and hot pack given initially for 10-15 minutes to the lower back. The exercise program was given for 4 weeks
with a total of 24 sessions and progression of the activity was made within the tolerance of the patient. Pre and
post treatment readings were taken of pain, Oswestry Disability Questionnaire and Functional Reach Test.
Results were analyzed using paired, unpaired t- test. Results showed that there is significant effect on pain,
Oswestry Disability Questionnaire and Functional Reach Test in the two groups but group A was clinically
more significant than groups B. The study concluded that patients with low back pain are benefitted more by
Proprioceptive neuromuscular facilitation program. So, Proprioceptive neuromuscular facilitation program
should be practiced more.
Keywords: Low Back Pain, Core Stabilization Exercises, Proprioceptive Neuromuscular Facilitation.
The document discusses the benefits of whole body vibration training for senior populations. It describes how vibration training creates involuntary muscle contractions that help improve muscle performance, strength, power, flexibility and tone. It can also be used for muscle rehabilitation and conditioning in a passive way to limit strain. The optimal vertical vibration allows training to improve balance, gait, mobility and prevent falls for seniors, which is important for independence and quality of life. It discusses adjusting frequency and amplitude for different training benefits and lists several studies on vibration training.
ISMST 2015 Abstract 2 - The influence of medical shockwaves on muscle activat...Kenneth Craig
This study investigated the effects of medical shockwave therapy on muscle activation patterns and performance in healthy athletes. Golfers and weightlifters underwent shockwave therapy targeting specific muscles. Post-treatment, golfers showed increased swing speed, ball distance, and faster muscle activation. Weightlifters showed faster muscle activation but lower energy output during squats, though they were able to lift more weight. The study suggests shockwave therapy may induce favorable biological responses in healthy muscles, reducing fatigue and potential for overuse injuries over time. Further research is warranted.
Whole body vibration training creates involuntary muscle contractions that stimulate the muscles. It can be used to improve strength, balance, flexibility and muscle tone while rehabilitating muscles in a passive way. The vertical vibration limits side stresses on joints. Adjusting the frequency and amplitude alters the effects, with higher values providing more benefits for strength and power and lower values for relaxation. Vibration training can help improve mobility, balance and prevent falls in senior populations by strengthening muscles important for these tasks. It is a beneficial therapy and training method for many conditions.
The effect of instability training on knee joint proprioception and core stre...Fernando Farias
A general 10-week IT program utilizing Swiss balls and body mass as a resistance proved effective for improving knee proprioception as well as trunk flexion and extension strength in previously inactive individuals. The present study demonstrates that the use of body weight as a resis- tance under unstable conditions can provide significant improvements in knee proprioception (for as long as 9 months after training) and trunk strength for the untrained population that should contribute to general health and functionality.
Muscle energy technique, a manual therapy technique with a long term history and 8 variations which can be used in various condition to treat muscle as well as joints. This slide show consists of detailed history, variations/types and summary of MET in detail.
PROMOTING BILATERAL SYMMETRY IN THE BODY THROUGH AN EASTERN MEDICAL APPROACH ...IAEME Publication
Sotai (natural motion) therapy offers new therapeutic potential from an Eastern medicine perspective for patients suffering chronic pain, in which plastic changes with pain regulation in the central nervous system and peripheral nervous systems, psychological factors, and the like retard medical treatment because they contribute to the formation of clinical conditions. In this study interventions will be performed via sotai therapy with the goal of improving motion imbalances that are related to chronic pain on healthy men and women in their 20s in order to obtain basic knowledge. It will consider: (1) The validity of intervening from areas of the body that are somewhat removed from the target area by hypothesizing the body’s coordinative structures and (2) The validity of using LLE to assess the accuracy of perceptions of bodily sensations as well as the therapeutic results from sotai therapy from this, with the goal of contributing to scientific explanations of sotai therapy in terms of its therapeutic potential for chronic pain.
This study examined muscle activation patterns in the lower extremities during different squat techniques. 28 healthy subjects performed squats with neutral alignment (control), intentional frontal plane malalignment (medial knee displacement), and sagittal plane malalignment (anterior knee displacement). Electromyography was used to measure muscle activation in the quadriceps, hamstrings, and gastrocnemius. Results showed altered muscle activation patterns during the malaligned squats, with decreased quadriceps activation during medial knee displacement and changes in quadriceps and hamstring activation timing during anterior knee displacement compared to the control squat. The study provides information on how muscle activation changes with different squat alignments.
Short inter-set rest blunts resistance exercise-inducedFernando Farias
Manipulating the rest-recovery interval between sets of resistance exercise may influence
training-induced muscle remodelling. The aim of this study was to determine the acute muscle
anabolic response to resistance exercise performed with short or long inter-set rest intervals.
In a study with a parallel-group design, 16 males completed four sets of bilateral leg-press and
knee-extension exercise at 75% of one-repetition maximum to momentary muscular failure,
followed by ingestion of 25 g of whey protein. Resistance exercise sets were interspersed by
1 min (n = 8) or 5 min of passive rest (n = 8). Muscle biopsies were obtained at rest, 0, 4, 24
and 28 h postexercise during a primed continuous infusion of l-[ring-13C6]phenylalanine to
determine myofibrillar protein synthesis and intracellular signalling.
Delayed onset of vastii muscle activity in response to rapid postural perturb...Nosrat hedayatpour
In the current study, we analysed the relative timing of activation of the VMO and VL muscles during unexpected knee
perturbations performed before and after eccentric
exercise. The type of perturbation used resembles
perturbations that might commonly be encountered
during sport activities
The document discusses the multifidus muscle and its importance for spinal stability and motor control. It provides details on its anatomy and function, explaining how weakness or dysfunction of the multifidus can contribute to spinal issues. The document also discusses approaches to strengthening the multifidus through specific stabilization exercises and motor learning principles to help patients regain control and function.
A case report of posterior reversible encephalopathy syndrome in a patient di...bijnnjournal
Posterior reversible encephalopathy syndrome (PRES), a clinical radiological syndrome, is characterized by the
abrupt development of neurological symptoms such as headaches, convulsions, altered sensorium, and visual
problems. PRES has been linked to a number of risk factors or etiologies, including the use of immunosuppressants
or cytotoxins, hypertensive encephalopathy, eclampsia, preeclampsia, and underlying autoimmune diseases.
A 41-year-old female was admitted with acute necrotizing emphysematous pancreatitis complicated by posterior
reversible encephalopathy syndrome
Balint syndrome: an unusual triad, Balint syndrome: an unusual triadbijnnjournal
The paper investigates a case of sudden loss of vision in a patient with recent history of blurred vision of right eye
diagnosed with Central retinal artery occlusion (CRAO). The point of interest of this case report is that the clinical
features are something different from those of a CRAO and revealed cardinal triad of simultanagnosia, optic ataxia,
and oculomotor apraxia which are conclusive of a rare clinical entity known as Balint syndrome.
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This document discusses prosthetic trauma and the need for improved prosthetic devices that can restore stable and independent ambulation for persons with lower extremity amputations. It notes that over 500,000 people in the US live with lower limb loss and 130,000 lower limb amputations are performed annually. Current surgical procedures for amputation date back to the Civil War era and are not well suited for advanced prosthetics. State-of-the-art neural interfaces have been developed within this outdated surgical paradigm. True restoration of function requires an approach that considers the fundamental motor unit of agonist-antagonist muscle pairs for joint control.
This study aimed to investigate the neuromotor effects of transverse friction massage (TFM) on the quadriceps femoris tendon using surface electromyography, force sensors, and ultrafast ultrasound. Fourteen healthy males received TFM on their quadriceps tendon while fifteen controls rested. Signals were recorded before and after TFM/resting to analyze time delays related to excitation-contraction coupling, force transmission, and electromechanical delay during voluntary contractions. Results showed TFM increased the time of excitation-contraction coupling and electromechanical delay, while decreasing time of force transmission, suggesting TFM influences neuro-motor mechanisms and changes muscle and tendon stiffness. The study provides insight into how TFM applied
DETRAINING IN RELATION TO SKELETAL MUSCLE Dzevad Saric
Detraining occurs when there is a reduction or cessation of training, leading to partial or complete loss of physiological and performance adaptations. Periods of detraining are common for athletes during injuries or holidays. Muscle atrophy is characterized by a decrease in muscle mass and occurs due to inhibition of protein synthesis during inactivity. The degree of atrophy depends on the length of inactivity. While short detraining periods under 2 weeks may not affect muscle fibers, longer periods can decrease fiber size, especially in fast-twitch fibers. Maintaining some exercise during injury can help limit muscle atrophy.
Three applications of mechanical vibration to the quadriceps muscle for 10 minutes each over three consecutive days improved body balance in subjects who underwent ACL reconstruction, as shown by decreased length of trace, mean speed of shifts, and ellipse area when standing on the operated leg up to 90 days later. While leg force did not differ between treated and untreated groups, treated subjects showed greater confidence standing on the operated leg, suggesting vibration facilitated proprioceptive learning. The long-lasting effects may be due to conditioning of the neural network controlling the muscle and joint from association of voluntary contraction during vibration.
The document summarizes a study that investigated the effects of applying vibratory stimulation to the quadriceps muscle of subjects who underwent anterior cruciate ligament (ACL) reconstruction surgery. The study found that applying short periods of vibration for a few consecutive days led to improved balance and equilibrium over longer periods of time, as measured by various parameters, compared to a control group. While leg force was not significantly different between groups, the treated subjects showed a preference for standing on the operated leg, indicating the vibration helped them regain confidence in using that leg for balance. The long-lasting positive effects are believed to be due to improvements in proprioceptive control and learning in the central nervous system.
To Compare The Effect Of Proprioceptive Neuromuscular Facilitation and Static...ijtsrd
Background: Flexibility is an important physiological component of physical fitness and reduced flexibility can cause inefficiency in the workplace and is also a risk factor for low back pain. Increasing hamstring flexibility was reported to be an effective method for increasing hamstring muscle performance.Objective: To compare the effects of modified hold-relax proprioceptive neuromuscular facilitation stretching technique and static stretching on flexibility of hamstring muscle.Materials and Methods: In this comparative study 60 subjects were selected by convenience sampling and research design was comparative and experiment in nature. Subjects were selected on the basis of inclusion criteria. Subjects were divided into two groups, group A and group B allocating alternate subjects to group A and group B, 30 in each group. Group A was treated with Proprioceptive Neuromuscular Facilitation with cryotherapy and Group B was treated with Static Stretching with cryotherapy. Baseline assessment was taken on pre stretch, post stretch and after 24 hours using Active Knee Extension test and Modified back saver sit and reach test.Results: Both the groups showed significant improvement in hamstring flexibility. (p0.05).Conclusion: Thus we concluded that the Proprioceptive Neuromuscular Facilitation Stretching Technique and Static Stretching both are effective to improve flexibility of hamstring muscle and clinically both the interventions are equally effective. Tanu Kapila | Dilpreet Kaur | Jaspinder Kaur"To Compare The Effect Of Proprioceptive Neuromuscular Facilitation and Static Stretching on Flexibility of Hamstring Muscle: A Comparative Study" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-1 | Issue-5 , August 2017, URL: http://www.ijtsrd.com/papers/ijtsrd2266.pdf http://www.ijtsrd.com/other-scientific-research-area/other/2266/to-compare-the-effect-of-proprioceptive-neuromuscular-facilitation-and-static-stretching-on-flexibility-of-hamstring-muscle-a-comparative-study/tanu-kapila
This study investigated how localized muscle fatigue of the ankle plantarflexors affects spatial electromyography (EMG) patterns in the medial gastrocnemius muscle during walking and running. The researchers recorded high-density EMG from the medial gastrocnemius before and after subjects performed a calf raise task to induce fatigue. They found that after fatigue, peak EMG activity decreased but mean power frequency increased during locomotion. Additionally, the location of peak EMG shifted proximally compared to the pre-fatigue location, suggesting altered motor unit recruitment to distribute muscle loads. Despite these EMG changes, lower limb biomechanics were similar before and after fatigue.
Vibration therapy involves using a vibrating platform to transmit vibrations through the body. It has been shown to improve muscle strength, bone density, circulation, and range of motion. Vibration therapy was first used by Russian astronauts and allowed them to stay in space longer with less bone and muscle loss than American astronauts. It provides benefits similar to exercise but in a fraction of the time and can be used safely by people with medical conditions that prevent traditional exercise. Potential risks include back pain if vibrations are too intense.
bioDensity and Vibration Research ReviewGreg Maurer
This document reviews research on bioDensity isometric technology and whole body vibration. It finds that vibration exercise can help build strength, increase bone mass, improve organ function, balance, and quality of life for individuals aged 12 and older. Several studies show that short bouts of low-level vibration increased bone and muscle mass and reduced symptoms of conditions like osteoporosis, fibromyalgia, and chronic fatigue syndrome by stimulating blood flow and the release of hormones. Vibration exercise represents an effective non-pharmacological approach to improving health and functional ability, especially for the elderly.
To Compare The Effect Of Proprioceptive Neuromuscular Facilitation Program Ve...IOSR Journals
Abstract: Low back pain has been a matter of concern, affecting up to 90% of population at some point in
their lifetime, up to 50% have more than one episode. People of all age group can be affected by this menace
irrespective to their gender and quality of life. It has become one of the leading causes for the visit to physician
thus also puts a heavy burden on the currency of the country. Physiotherapy is the most widely used form of
treatment adopted for gaining relief from low back pain. The exercises include stretching, strengthening, range
of motion exercises, McKenzie therapy and core stability exercises other techniques like Proprioceptive
neuromuscular facilitation program etc. It has been concluded in various studies core stability exercises and
Proprioceptive neuromuscular facilitation are beneficial in low back pain patients but comparison of their effect
needs to be established to provide early and better relief from the disability. Therefore objective of the study was
to compare the effect of Proprioceptive neuromuscular facilitation program and Core stabilization exercises on
low back pain patients. 40 subjects aged 30 – 50 years with low back pain for more than 4 weeks were made
part of the study based on inclusion and exclusion criteria and were then divided into two groups named A, B.
Group A received Proprioceptive neuromuscular facilitation and group B received Core stabilization exercises
and hot pack given initially for 10-15 minutes to the lower back. The exercise program was given for 4 weeks
with a total of 24 sessions and progression of the activity was made within the tolerance of the patient. Pre and
post treatment readings were taken of pain, Oswestry Disability Questionnaire and Functional Reach Test.
Results were analyzed using paired, unpaired t- test. Results showed that there is significant effect on pain,
Oswestry Disability Questionnaire and Functional Reach Test in the two groups but group A was clinically
more significant than groups B. The study concluded that patients with low back pain are benefitted more by
Proprioceptive neuromuscular facilitation program. So, Proprioceptive neuromuscular facilitation program
should be practiced more.
Keywords: Low Back Pain, Core Stabilization Exercises, Proprioceptive Neuromuscular Facilitation.
The document discusses the benefits of whole body vibration training for senior populations. It describes how vibration training creates involuntary muscle contractions that help improve muscle performance, strength, power, flexibility and tone. It can also be used for muscle rehabilitation and conditioning in a passive way to limit strain. The optimal vertical vibration allows training to improve balance, gait, mobility and prevent falls for seniors, which is important for independence and quality of life. It discusses adjusting frequency and amplitude for different training benefits and lists several studies on vibration training.
ISMST 2015 Abstract 2 - The influence of medical shockwaves on muscle activat...Kenneth Craig
This study investigated the effects of medical shockwave therapy on muscle activation patterns and performance in healthy athletes. Golfers and weightlifters underwent shockwave therapy targeting specific muscles. Post-treatment, golfers showed increased swing speed, ball distance, and faster muscle activation. Weightlifters showed faster muscle activation but lower energy output during squats, though they were able to lift more weight. The study suggests shockwave therapy may induce favorable biological responses in healthy muscles, reducing fatigue and potential for overuse injuries over time. Further research is warranted.
Whole body vibration training creates involuntary muscle contractions that stimulate the muscles. It can be used to improve strength, balance, flexibility and muscle tone while rehabilitating muscles in a passive way. The vertical vibration limits side stresses on joints. Adjusting the frequency and amplitude alters the effects, with higher values providing more benefits for strength and power and lower values for relaxation. Vibration training can help improve mobility, balance and prevent falls in senior populations by strengthening muscles important for these tasks. It is a beneficial therapy and training method for many conditions.
The effect of instability training on knee joint proprioception and core stre...Fernando Farias
A general 10-week IT program utilizing Swiss balls and body mass as a resistance proved effective for improving knee proprioception as well as trunk flexion and extension strength in previously inactive individuals. The present study demonstrates that the use of body weight as a resis- tance under unstable conditions can provide significant improvements in knee proprioception (for as long as 9 months after training) and trunk strength for the untrained population that should contribute to general health and functionality.
Muscle energy technique, a manual therapy technique with a long term history and 8 variations which can be used in various condition to treat muscle as well as joints. This slide show consists of detailed history, variations/types and summary of MET in detail.
PROMOTING BILATERAL SYMMETRY IN THE BODY THROUGH AN EASTERN MEDICAL APPROACH ...IAEME Publication
Sotai (natural motion) therapy offers new therapeutic potential from an Eastern medicine perspective for patients suffering chronic pain, in which plastic changes with pain regulation in the central nervous system and peripheral nervous systems, psychological factors, and the like retard medical treatment because they contribute to the formation of clinical conditions. In this study interventions will be performed via sotai therapy with the goal of improving motion imbalances that are related to chronic pain on healthy men and women in their 20s in order to obtain basic knowledge. It will consider: (1) The validity of intervening from areas of the body that are somewhat removed from the target area by hypothesizing the body’s coordinative structures and (2) The validity of using LLE to assess the accuracy of perceptions of bodily sensations as well as the therapeutic results from sotai therapy from this, with the goal of contributing to scientific explanations of sotai therapy in terms of its therapeutic potential for chronic pain.
This study examined muscle activation patterns in the lower extremities during different squat techniques. 28 healthy subjects performed squats with neutral alignment (control), intentional frontal plane malalignment (medial knee displacement), and sagittal plane malalignment (anterior knee displacement). Electromyography was used to measure muscle activation in the quadriceps, hamstrings, and gastrocnemius. Results showed altered muscle activation patterns during the malaligned squats, with decreased quadriceps activation during medial knee displacement and changes in quadriceps and hamstring activation timing during anterior knee displacement compared to the control squat. The study provides information on how muscle activation changes with different squat alignments.
Short inter-set rest blunts resistance exercise-inducedFernando Farias
Manipulating the rest-recovery interval between sets of resistance exercise may influence
training-induced muscle remodelling. The aim of this study was to determine the acute muscle
anabolic response to resistance exercise performed with short or long inter-set rest intervals.
In a study with a parallel-group design, 16 males completed four sets of bilateral leg-press and
knee-extension exercise at 75% of one-repetition maximum to momentary muscular failure,
followed by ingestion of 25 g of whey protein. Resistance exercise sets were interspersed by
1 min (n = 8) or 5 min of passive rest (n = 8). Muscle biopsies were obtained at rest, 0, 4, 24
and 28 h postexercise during a primed continuous infusion of l-[ring-13C6]phenylalanine to
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1. BOHR International Journal of Neurology and Neuroscience
2023, Vol. 1, No. 2, pp. 87–92
DOI: 10.54646/bijnn.2023.12
www.bohrpub.com
METHODS
Whole-Body vibration therapy: an overview
Jasmin Nisamudeen1, Binoy Mathew K. V.1* and Roshan Bijlee K. N.2
1Department of Physiotherapy, Composite Regional Center of Skill Development Rehabilitation and Empowerment of Persons
with Disabilities-Kozhikode, Calicut, India
2Composite Regional Center of Skill Development Rehabilitation and Empowerment of Persons with Disabilities-Kozhikode,
Calicut, India
*Correspondence:
Binoy Mathew K. V.,
binoy9797@gmail.com
Received: 04 July 2023; Accepted: 18 July 2023; Published: 11 August 2023
Concern has been raised about whole-body vibration training (WBVT), which activates skeletal muscles by
employing vibrations rather than a mass load or dynamic exercise. As vibration massage and local vibration applied
to muscles show promising benefits, vibration treatment and exercise became widely used in rehab. Studies are
still being conducted to fully comprehend the cumulative impacts and long-term safety of this training program.
This study gives an outline of WBVT, explaining its physiology and advantages as well as some safety aspects,
contraindications, and instructions for applying it in a clinical environment.
Keywords: WBVT, QOL, posture, frequency, tonic vibration reflex, eccentric exercise
1. Introduction
Vibration training (VT), which stimulates the skeletal
muscles by using vibrations rather than a mass load
or dynamic exercise, has drawn a lot of concern (1).
It has acquired popularity as a practical strategy for
enhancing muscle function since it is a non-invasive physical
therapy that offers vibration platforms for passive exercise
stimulation (2). Whole-body vibration training (WBVT) has
emerged as an effective approach for improving muscular
performance and inducing adaptive neuromuscular changes
through biomechanical and physiological effects (3). Whole-
body vibration (WBV) has gained popularity as a technique
for clinical and performance improvement. Numerous
studies have emphasized the advantages of including WBV
as a low-intensity exercise because of its capacity to raise
bone mineral density (BMD) in osteoporosis patients while
also lowering fall risk due to an improvement in balance and
strength (4).
Whole-body vibration training effects depend on a
number of variables, such as fundamental vibration
parameters, vibration mode, training posture, and training
frequency (3). The duration of work, rest intervals, number
of sets, and sessions are adjusted based on the patient’s
clinical and physical conditions. For preserving astronauts’
skeletal muscle mass and strength and enhancing athletic
performance, WBVT is a common training technique that
increasingly gains attention in exercise rehabilitation. (2).
Whole-body vibration is a low-intensity exercise that uses
a platform that oscillates and generates sinusoidal vibrations.
There are two widely used types: (1) a side-alternating (also
known as horizontal) oscillating platform that employs a
fulcrum to alternately elevate the left and right sides of
the body and (2) a vertical platform that delivers tri-axial
acceleration with the majority of the vibration in the vertical
direction, raising the body equally (4).
2. History
Scientists originally created whole-body vibration technology
in the second half of the twentieth century to prevent
astronauts from losing bone density and developing atrophy
in their muscles, caused by zero-gravity exposure. WBV,
often referred to as indirect vibration, involves exposing
people to repetitive oscillations produced by a mechanical
instrument that produces sinusoidal waveforms with a
certain amplitude and frequency. Commercial vibration
87
2. 88 Nisamudeen et al.
platforms have proliferated in performance spaces and
institutions around the country during the past 20 years.
As a result, researchers in sports performance and athletic
training have started investigating the use of WBV in trained
individuals (5).
JM Granville made a major advancement in the discipline
in 1881 when he first presented the idea of employing
mechanical vibration to relieve pain. WBVT, however, did
not become well-known or widely used as a training method
among athletes until the 1980s. Individuals participating
in WBVT experience external oscillation vibrations while
standing on a vibrating platform. Although the majority
of platforms use one or both of the widely used energy
transfer technologies, their technical capabilities vary. While
some devices use a vertical vibration mode that sends
vibrations simultaneously to both feet, others use a seesaw-
like side-alternating mode. Since these two methods focus
on different neurophysiological movement patterns, there is
a continuous discussion concerning whether the strategy is
more advantageous (6).
3. Physiological changes
Vibration therapy and exercise were extensively utilized
in rehab, with vibration massage and local vibration
applied to muscles showing promising results. Vibration
massage has been discovered to possess circulatory
effects. Moreover, when vibration is applied to muscle
bellies, it promotes motor responses, even in cases of
pathological conditions. The tonic vibration reflex, a
reflexive action triggered by vibration therapy, is widely
regarded as one of the primary factors responsible for
the increased neuromuscular stimulation observed during
and following such therapy. Vibration also stimulates
somatosensory regions of the cerebral cortex and amplifies
the myotatic reflex, thereby enhancing voluntary movements.
Furthermore, the elevation in muscle temperature, improved
perfusion, and reduction in mechanical vibration can
potentially have a favorable effect on force production
(7). Various theories have been proposed to explain the
WBV responses, including the tetanic vibration reflex,
angiogenic factors promoting capillary growth, hormone
secretion, and stem cell activation. These acute effects
are attributed to the activation of the “tonic vibration
reflex,” which induces muscle contractions primarily
in the lower limbs. Following a single WBVT session,
positive effects have been observed, such as improved blood
circulation, enhanced muscle performance and balance,
and increased production of human growth hormone.
WBVT also shows potential for improving postural control
and intermuscular coordination and counteracting muscle
atrophy and bone density loss associated with immobility
(5, 6).
Exercise performed on vibrating platforms can influence
the skeletal system in two ways: by potentiating muscle
contractions, which are essential for bone health, and
by transmitting vibration as a mechanism for strain
activation that encourages bone growth and increases bone
mineral density. Vibration has also shown the potential to
influence pain perception through a mechanism analogous
to transcutaneous electric nerve stimulation (TENS). The
combination of rapid cyclic contractions and the valuable
sensory information provided by mechanical oscillation on
the platform can improve flexibility and proprioception.
While hormonal responses to WBV exercises have been
identified, their replication has not been consistent. Ongoing
studies are being conducted to gain a comprehensive
understanding of the cumulative effects and long-term safety
of this training regimen (7).
During vibration exercise, the muscle-tendon complex
undergoes cyclic changes between elongation and shortening
due to the vibration stimulus. This vibration-induced
stretching and shortening trigger reflex contraction through
the activation of primary and secondary spindle endings
and Golgi tendon organs. The stretch reflex and H-reflex are
suppressed, whereas corticospinal excitatory pathways are
facilitated. Research has shown that vibration can elongate
the gastrocnemius muscle-tendon complex by approximately
1% of its total length. Vibration also affects electromyography
(EMG) activity, exhibiting vibration-synchronous EMG
responses in specific muscles. Additionally, vibration
exercise increases energy metabolism and adenosine
triphosphate (ATP) turnover (8). The sinusoidal oscillations
energize muscle spindle primary endings, leading to the
activation of α-motor neurons, and has been recognized
as the tonic vibration reaction, fast eccentric-concentric
involuntary contractions. Various propositions propose
adaptive muscular mechanisms associated with vibration
therapy, including muscle activity synchronization, Golgi
tendon organ stimulation, activation of antagonistic muscles,
and potential modulation of neurotransmitters such as
dopamine and serotonin (9).
Vibration exercises elicit acute neuromuscular responses
and increase serum anabolic hormone concentrations,
similar to resistance exercise (10). The precise mechanism
by which the body responds to vibratory stimuli remains
uncertain. However, the activation of the neuromuscular
system, particularly the tonic vibration reflex, is a commonly
proposed mechanism. WBVT optimizes the stretch reflex
and motor unit recruitment through sensory stimulation
and afferent pathways. The neuromuscular system may also
adjust muscle activity to dampen vibrations, contributing to
improved motor unit synchronization and overall muscle
function. Additionally, there is speculation that WBVT may
have a preventative effect on muscle damage by distributing
contractile stress more evenly among active muscle fibers
through eccentric exercise (11).
3. 10.54646/bijnn.2023.12 89
The musculoskeletal system relies on dynamic mechanical
loading to maintain bone strength and muscle function.
Reduced functional loading, often caused by conditions
that limit mobility, can lead to bone fragility. Dynamic
mechanical loading is necessary for bone development,
with varying intervals between loading episodes. Within
the bone matrix, dynamic load offers both magnitude
and frequency components. Vibration therapy, specifically
low-intensity vibration (LIV), delivered as a low-magnitude,
high-frequency stimulus, provides a safe and effective
means to supply mechanical signals to the musculoskeletal
system. In addition, the combination of large- and high-
frequency, low-magnitude signals generated from muscle
contractions plays a crucial role in maintaining bone
strength. Vibration therapy targets various cell types
involved in bone remodeling, including mesenchymal
stem cells, osteocytes, and osteoclasts. It promotes
the differentiation of bone-forming cells (osteogenic
differentiation) while reducing bone resorption. Moreover,
vibration therapy’s low-intensity mechanical signals have
anabolic effects on bones, potentially mediated indirectly
through extraskeletal tissues. Notably, vibration therapy
enhances muscle strength, size, and performance, possibly
by improving neuromuscular efficiency. Additionally, it
stimulates the expression of anabolic genes in tendons and
may increase bone density by reducing fat accumulation.
The underlying molecular mechanisms responsible for
these responses involve enhanced β-catenin signaling,
improved gap junction communication, and acceleration
of the cell nucleus. Remarkably, these mechanisms operate
independently of traditional factors such as matrix strain
or fluid shear. WBVT shows promise in improving bone
quality and strength, particularly for individuals unable to
engage in high-impact exercises. Low-intensity WBV has
demonstrated the ability to increase BMD and enhance
muscle function. Combining WBV with exercise has yielded
positive outcomes, especially among post-menopausal
women and individuals with low bone density (12).
The cutting-edge complete active rehabilitation
osteoporosis rehabilitation plan (ICARO), which includes
WBV, is essential. The beneficial effects of vibratory treatment
on bone formation are supported by the piezoelectric
hypothesis. This idea states that when pressure is applied
to bones, an electrical potential difference is created that
accelerates the process of bone growth. WBV prevents
disorders like osteoporosis and sarcopenia by increasing
the levels of growth hormone (GH) and testosterone in
the blood. The advantages of vibration treatment are
explained by the fact that the upright posture is regarded
to be a more effective bone-growth stimulator than
the horizontal position. Furthermore, vibration therapy
enhances neuromuscular coordination and improves muscle
strength, which is particularly beneficial for individuals with
osteoporosis because it lowers the possibility of falls and
consequent fractures (13).
Muscle oxygenation and blood flow are strongly
connected. During exercise, blood flow to the working
muscle increases as a result of a variety of factors, including
increased oxygen and fuel requirements and raised carbon
dioxide and hydrogen ion concentrations, among others.
Changes in peripheral blood flow due to WBV treatment
may disclose a possible mechanism of action for WBV
therapy. One typical therapeutic goal of employing
treatment approaches is to improve circulation at the
site of musculoskeletal injury during the fibroblastic repair
and maturation-remodeling phases of healing. These indices,
which are numerical assessments of the cardiovascular
system’s autonomic function, can be a helpful tool for
determining operational stress. Physical vibration was shown
to be connected to the workload by the percentage of heart
rate reserve, but driving duration was not. The construction
machine’s remote operators, who experienced the least
vibration while running it, also had much lower MSEs and
HRV indices than the riders, who felt the most vibration.
As a consequence, the hypothesis that the physical vibration
of construction workers negatively affects the HRV and
MSE was confirmed. Furthermore, it was demonstrated that
the driving time of the construction machine was inversely
connected with the vibration intensity of the operating
environment, as well as the HRV and MSE measurements.
The operator’s various HRV indices are lower in this
circumstance because of a greater sympathetic nervous
system tone and sympathetic balance in a setting with high
vibrations and a lower parasympathetic nervous system
tone (14).
4. General effects
Vibration therapy offers promising benefits for individuals
with different clinical populations. In Parkinson’s disease,
the therapy improves motor symptoms by using random
vibrations with specific parameters. For fibromyalgia
patients, the focus is on pain and fatigue control, employing
vertical vibrations at designated frequencies. Frail adults with
osteopenia can enhance their balance and increase BMD
through side-alternating vibrations. Each clinical population
requires tailored exercises and varying frequencies to address
their specific needs, showcasing the versatility and potential
of vibration therapy in promoting overall well-being and
symptom management (7).
Whole-body vibration training is gaining recognition as
a viable practice to improve neuromuscular function in
physical therapy, particularly for older adults. It offers
convenience as it can be easily administered at home or
at rehabilitation centers by having participants step on a
vibrating surface during training sessions. WBV provides
several benefits across multiple organs and systems in
the body. In older adults, it has been shown to improve
balance, strength, functional mobility, decreased oxygen
4. 90 Nisamudeen et al.
intake, quality of life, increased blood flow, increased
bone mineral density, decreased body fat percentage, and
improved cardiovascular, vascular, and pulmonary functions.
Its applications span a variety of fields, including the
rehabilitation of people with cerebral palsy and stroke, the
treatment of musculoskeletal pain, and the monitoring of
blood sugar in diabetic patients. Additionally, WBVT has
demonstrated its ability to enhance physical capabilities in
older adults with sarcopenia, and some evidence suggests
that systemic vibration may have even higher rehabilitative
benefits for older adults and patients than for the general
population (15).
A number of chronic illnesses and ailments, such as
fibromyalgia, persistent lower back pain, osteoporosis, and
multiple sclerosis, may benefit from WBVT (6). In terms of
changes in maximum isometric and isokinetic force, plasma
creatine kinase activity, muscle soreness, and pressure point
threshold (PPT), the WBVT lessened the effects of exercise-
induced DOMS (11). There are several WBVT devices
available today that produce WBV using different mechanical
concepts. The cardiovascular, musculoskeletal, endocrine,
and neurological systems all react to WBV treatment in
a thorough manner (9). In order to mechanically engage
muscles, WBVT stimulates neuromuscular activity in the
form of muscle reflexes. Studies on WBVT’s effectiveness
are conflicting. There have been reports of both favorable
outcomes (increased flexibility, power, muscular strength,
and performance) and unfavorable or no outcomes. This
uncertainty is a result of various study designs, populations
investigated, and WBV devices being employed (11).
5. Characteristics
In vibration training, the body is subjected to mechanical
vibration on a shaking platform. However, when the
person is unable to stand, specialist equipment has been
used, such as a chair or a standing frame. Vertical
platforms oscillate synchronously up and down, whereas
side-alternating platforms oscillate on the left and right sides
of a fulcrum. Horizontal and random vibration platforms are
also employed, but to a lesser extent. From the platform’s
lowest position to its highest point, its displacement might
vary from 1 to 14 mm. Vibration training methods may
entail applying the stimulus once, several times, or over
an extended period of time. The exposure may be acute
or chronic in nature. Exposure times per application might
range from 15 s to 10 min. Standing exercises or a variety
of activities, such as static or dynamic motions, can be used
in vibration exercises. Squats, lunges, and calf raises are
examples of lower-body workouts. Push-ups, body planks,
and triceps dips are examples of upper-body activities.
Typical specified joint angles and foot placements are full
or half squats and broad or narrow stances. Rest periods
between exercises can range from 10 to 60 s, and the number
of repetitions per exercise may vary from 1 to 3. The
frequency refers to the rate at which cycles or oscillations
occur within a second and usually falls within the range
of 6–45 Hz. The magnitude of vibration is directly related
to the gravitational force acting on the body in the vertical
direction. It is commonly quantified in multiples of Earth’s
gravity (up to 15 g) to indicate the intensity of the vibration
experienced. The frequency of sessions is the number of
times per week the exercise is performed, ranging from
1 day to 1 week. To increase the intensity of the exercise,
participants can incorporate additional weights, such as a
weighted vest or dumbbell. Finally, participants may choose
to perform vibration exercises barefoot, in socks, or with
tennis shoes, depending on their preference and comfort.
These factors collectively contribute to the characterization
and customization of vibration exercise protocols (7).
Due to the availability of several devices with varying
features, the scientific literature on vibration treatment is
complicated. While low-intensity vertical vibrations are often
accepted successfully, the use of high-intensity exercise
equipment may have negative consequences. Devices can
produce high-magnitude ( > 1 g) or low-magnitude (1 g)
forces, depending on the combination of displacement and
frequency that causes the body to accelerate. It’s vital to
remember that equipment promoted as fitness supplements
frequently weighs more than 4 g, making it inappropriate
for elderly or fragile individuals looking to strengthen their
bones. Therefore, while choosing a treatment plan, doctors
and rehabilitation professionals are advised to pick tools
that give low-intensity (1 g), horizontally directed vibrations
at high frequencies (30–100 Hz), and clear information
regarding vibration characteristics (12).
Utilizing all of the lower leg muscles while employing
personalized WBV on the lower body will maximize the
biochemical reaction. As a result, hormone levels rise,
which is related to the volume of muscles used during
exercise and their intensity. The lack of agreement on the
best way to create WBV training programs, however, has
produced erratic outcomes. Muscle activation and motor unit
recruitment can be enhanced by tailoring WBV by altering
its amplitude and frequency. Acceleration, duration, and
external load are all WBV size characteristics that have been
linked to pain. According to recent studies, the testosterone
response is size-independent, whereas the GH response is
dramatically increased when WBV is delivered to the upper
extremities (10).
Both very high (> 100 Hz) and extremely low (20 Hz)
vibrational frequencies might have negative consequences.
The entire body’s resonance frequency is in the low-
frequency band, which causes great transmissibility and
negative impacts. To counteract these effects, clinical studies
frequently use WBV in the frequency range of 20–60 Hz.
High frequencies can strain muscles and damage soft tissues,
and those above 60 Hz may worsen the symptoms of hand-
arm vibration syndrome (HAVS). In untrained women,
5. 10.54646/bijnn.2023.12 91
knee extensor muscle torque was increased by WBV at
30 Hz frequency and 4 mm peak-to-peak amplitude over
the course of 8 weeks. Factors such as load-bearing and
exercises during vibration therapy can enhance muscle
strength and physical performance. However, the research
discrepancies arise due to variations in vibration parameters
and subject posture. High-frequency WBV may have
negative consequences, and low-frequency and low-intensity
vibrations are ineffective. Further investigation is needed to
establish optimal WBV protocols with scientific justification
for parameter choices (16).
6. Safety aspects
Modifying standards to account for vibration in
rehabilitation and exercise is crucial. Vibration transmission
varies across the body parts and postures, with resonance
at around 5 Hz in the trunk and below 20 Hz in the
lower extremities. Adjusting posture and using side-
alternating vibration significantly minimize the transmission.
Knee flexion and side-alternating vibration can reduce
transmission to the head and trunk. While the potential
harm from exercise-related resonance is uncertain, caution
is advised for frequencies around 5 Hz and below 20 Hz.
Novices should be educated about potential risks, and
unauthorized access to vibration platforms should be
prevented. Hand-transmitted vibration causes vibration
white finger disease, which impairs hand function. It
remains unclear if similar conditions occur in the lower
extremities. Recommendations for occupational exposure to
hand-held vibration tools should be considered, and further
investigation is required to comprehend the dangers of high
vibration during whole-body activities (8).
7. Implications for practice
When selecting a device, it is advisable to choose a validated
machine with peer-reviewed published data. Independent
confirmation of parameters such as acceleration, frequency,
and amplitude is preferable. Some devices have limited
options for manipulating frequency and displacement,
offering pre-defined programs with poorly described
vibration characteristics. Instead of depending simply on
vendor recommendations, it’s critical to utilize the lowest
effective dose, adhere to established training routines, and
employ vibration settings that have been shown to be safe and
effective. Before participating, it is important to seek medical
clearance when working with clinical populations (7).
When initiating a training regimen involving WBV, it is
essential for individuals to wear footwear equipped with
thin and rigid soles. The purpose of this recommendation
is to avoid excessive dampening of vibration resulting from
footwear. To make sure the consumer can withstand WBV,
it is advisable to begin with a shorter duration, decreased
frequency, and displacement from a peak to a peak during
the initial sessions. Each exercise should not last more than
20–30 s in the beginning to allow for enough recovery time.
However, it is important to note that this principle may not
be applicable when performing basic standing exercises. By
escalating the exercise’s amplitude, frequency, length of time,
and repetition count while reducing the recovery period, one
can progress in intensity. Proper foot positioning is vital,
ensuring that feet are properly positioned on the ground
with the toes slightly inclined outward. Certain exercises,
such as calf lifts and single-leg squats, can be executed with
this proper foot placement. The handrail can enhance safety,
but for certain balance exercises, it may not be necessary.
It is important to avoid a locked knee position during all
exercises to restrict the propagation of vibration from the
torso to the head. The healthcare provider should conduct
close monitoring of common side effects, such as brief
itchiness, skin redness, tightness in the muscles, headaches,
mild tenderness in the knees, and discomfort in the front
of the foot. When considering the possible advantages and
acknowledged risks, WBV exercise can be advantageous for
clinical populations in situations where alternative means
of exercise are impractical due to time limitations, a lack
of interest in participating in traditional programs, a lack
of finances, or an inability to perform load-bearing impact
activities (7).
8. Contraindications
Whole-body vibration therapy has several contraindications,
particularly related to various health conditions. People who
have recently had a myocardial infarction, a pacemaker,
prosthetic heart valves, hypertension, uncontrolled venous
thrombosis, or an aortic aneurysm should avoid participating
in WBV training, according to the cardiovascular experts.
In the musculoskeletal domain, individuals with hip or
knee endoprosthesis, lower body metal implants from
osteosynthesis, osteoporosis with a vertebral fracture, an
acute spinal disk herniation, recent fractures, an acute
soft tissue injury, joint inflammation, or recent fractures
should avoid participating in WBV training. In terms
of neurological conditions, WBVT is not recommended
for those who have deep brain and/or spinal cord
stimulation, epilepsy, migraines, peripheral neuropathy,
decreased cognition that interferes with exercise training, or
any other neurological condition. WBVT is also prohibited
in cases of acute limb edema, pregnancy, tumors or
metastases, reduced skin integrity, recent surgery, and
incontinence of the bowel or bladder. It is essential to
take these contraindications into account and seek guidance
from healthcare professionals to ensure the safety and
appropriateness of WBVT based on individual health
conditions and considerations (7).
6. 92 Nisamudeen et al.
9. Conclusion
Whole-body vibration training has emerged as a valuable
therapeutic approach with multiple physiological benefits. It
is an efficient approach for improving muscular performance
and inducing adaptive neuromuscular changes through
biomechanical and physiological effects. However, more
research is needed to optimize protocols, standardize
procedures, and further explore its potential in various
clinical populations.
Conflict of interest
The authors declare that there were no financial or
commercial ties that may be seen as having a possible conflict
of interest during the conduct of the research.
Author contributions
All authors have contributed equally to this study.
Funding
This study was supported by the State Commissionerate for
Persons with Disabilities, Kerala.
Acknowledgments
We express our gratitude to S. H. Panchapakesan
Commissioner, State Commissionerate for Persons with
Disabilities, Kerala for his support.
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