This document provides information on Dr. Mohammad Shafique Asghar's qualifications and specializes in balance assessment. It then defines key terms related to balance and postural control. The summary describes the main components of maintaining balance, including:
1) Sensory input from vision, somatosensation, and vestibular systems
2) Central processing and integration of sensory information
3) Motor responses like ankle, hip, and stepping strategies to control the center of gravity over the base of support
assessment of balance and management of balanceCharu Parthe
The document defines various concepts related to balance and exercise therapy. It discusses the center of mass, center of gravity, momentum, base of support, limits of stability, ground reaction forces, and center of pressure. It also describes the roles of the nervous system, musculoskeletal system, and environmental context in balance control. The main sensory systems involved in balance - visual, somatosensory, and vestibular - are defined. Different motor strategies for maintaining balance when perturbed are outlined, including ankle, weight-shift, suspension, and hip strategies. Stepping is mentioned as another strategy for large perturbations.
This document discusses postural control and balance. It defines key terms like static and dynamic balance, center of mass, center of gravity. It describes the different sensory systems, motor responses, and strategies involved in maintaining balance. Common balance impairments after stroke are described. Several clinical balance tests are mentioned. The principles of balance training include progressive challenge, use of feedback, and training functional tasks. Safety during balance training is also addressed.
Role of various systems to maintain balance.
Role of sensory systems-vision,proprioceptors,vestibular
Role of Musculoskeletal system
Biomechanics in balance
Contextual factors in balance
Role of nervous system
Strategies-ankle, hip,stepping
The document discusses the neurophysiology of balance, including the role of the sensory systems (vision, proprioception, vestibular), musculoskeletal system, and nervous system in maintaining balance. It defines balance and related terms, and describes how the central nervous system integrates input from the visual, somatosensory, and vestibular systems to generate motor responses that control body position. When one sensory system is impaired, the CNS can suppress the inaccurate input and rely more on the other two systems through sensory re-organization. The musculoskeletal system also contributes through factors like posture, range of motion, strength, and type of muscle contraction.
Balance, or postural stability, is the process by which the body maintains equilibrium by keeping its center of mass over its base of support. It requires integration of sensory inputs from the visual, vestibular, and somatosensory systems and appropriate muscle responses from the nervous and musculoskeletal systems. When any of the sensory systems are impaired, the central nervous system compensates by increasing reliance on the other intact systems through a process called sensory organization. Different tasks require different types of balance control, including static balance to maintain a stable position at rest and dynamic balance during voluntary movements.
Balance involves maintaining the center of mass within the base of support through coordinated muscle activity and sensory input. Impaired balance can result from issues with the sensory, musculoskeletal, or vestibular systems. Balance is evaluated through static and dynamic tests with or without assistive devices or altered sensory input. Treatment involves graduated balance exercises focusing on posture, weight shifts, and introducing movement to challenge stability limits. Precautions are taken to avoid pain or unsafe movements.
This document discusses balance, fall prevention, and balance assessment and training. It defines balance as control of the center of mass over the base of support. Age-related changes and diseases that impact balance components are reviewed. Valid tools to measure balance include the Berg Balance Scale, Timed Up and Go test, and Functional Reach test. Balance training exercises discussed include calf stretches, heel/toe raises, soft surface stance, and exercises using movable surfaces like Swiss balls and tilt boards. Both hard and soft surfaces are used to challenge static and dynamic balance.
assessment of balance and management of balanceCharu Parthe
The document defines various concepts related to balance and exercise therapy. It discusses the center of mass, center of gravity, momentum, base of support, limits of stability, ground reaction forces, and center of pressure. It also describes the roles of the nervous system, musculoskeletal system, and environmental context in balance control. The main sensory systems involved in balance - visual, somatosensory, and vestibular - are defined. Different motor strategies for maintaining balance when perturbed are outlined, including ankle, weight-shift, suspension, and hip strategies. Stepping is mentioned as another strategy for large perturbations.
This document discusses postural control and balance. It defines key terms like static and dynamic balance, center of mass, center of gravity. It describes the different sensory systems, motor responses, and strategies involved in maintaining balance. Common balance impairments after stroke are described. Several clinical balance tests are mentioned. The principles of balance training include progressive challenge, use of feedback, and training functional tasks. Safety during balance training is also addressed.
Role of various systems to maintain balance.
Role of sensory systems-vision,proprioceptors,vestibular
Role of Musculoskeletal system
Biomechanics in balance
Contextual factors in balance
Role of nervous system
Strategies-ankle, hip,stepping
The document discusses the neurophysiology of balance, including the role of the sensory systems (vision, proprioception, vestibular), musculoskeletal system, and nervous system in maintaining balance. It defines balance and related terms, and describes how the central nervous system integrates input from the visual, somatosensory, and vestibular systems to generate motor responses that control body position. When one sensory system is impaired, the CNS can suppress the inaccurate input and rely more on the other two systems through sensory re-organization. The musculoskeletal system also contributes through factors like posture, range of motion, strength, and type of muscle contraction.
Balance, or postural stability, is the process by which the body maintains equilibrium by keeping its center of mass over its base of support. It requires integration of sensory inputs from the visual, vestibular, and somatosensory systems and appropriate muscle responses from the nervous and musculoskeletal systems. When any of the sensory systems are impaired, the central nervous system compensates by increasing reliance on the other intact systems through a process called sensory organization. Different tasks require different types of balance control, including static balance to maintain a stable position at rest and dynamic balance during voluntary movements.
Balance involves maintaining the center of mass within the base of support through coordinated muscle activity and sensory input. Impaired balance can result from issues with the sensory, musculoskeletal, or vestibular systems. Balance is evaluated through static and dynamic tests with or without assistive devices or altered sensory input. Treatment involves graduated balance exercises focusing on posture, weight shifts, and introducing movement to challenge stability limits. Precautions are taken to avoid pain or unsafe movements.
This document discusses balance, fall prevention, and balance assessment and training. It defines balance as control of the center of mass over the base of support. Age-related changes and diseases that impact balance components are reviewed. Valid tools to measure balance include the Berg Balance Scale, Timed Up and Go test, and Functional Reach test. Balance training exercises discussed include calf stretches, heel/toe raises, soft surface stance, and exercises using movable surfaces like Swiss balls and tilt boards. Both hard and soft surfaces are used to challenge static and dynamic balance.
This document defines posture and describes the different types of posture including static, dynamic, and abnormal postures. It discusses postural control and how it is maintained through various body systems. Key points of postural control include control of body orientation in space, maintaining center of gravity over base of support, and stabilizing the head. The document also examines postural strategies like fixed support synergies and changing support synergies that help restore equilibrium when perturbed. Sitting and lying postures are analyzed as well in terms of alignment and pressures on the spine.
Introduction to Balance and its concepts, Impaired balance and then management of impaired balance.
Based on Therapeutic Exercise Foundations and Techniques
This document discusses motor control and postural control. It defines motor control as the study of movement, which arises from the interaction of perception, cognition, individual characteristics, task constraints, and environmental factors. Postural control maintains stability and orientation through steady-state, reactive, and proactive balance. Steady-state balance involves alignment and muscle tone to counteract gravity. Reactive balance uses strategies like ankle/hip adjustments or changing support when perturbed. Proactive balance anticipates forces through sensory information and experience to stabilize movements like lifting objects. Environmental constraints and cognitive loads also influence balance control.
Posture - a perquisite for functional abilities in daily life. Posture is a combination of anatomy and physiology with inherent application of bio-mechanics and kinematics. Sitting, standing, walking are all functional activities depending on the ability of the body to support that posture to carry out each activity. Injuries and pathologies either postural or structural can massively change the bio-mechanics of posture and thus affect functional abilities.
This document summarizes key concepts about posture including:
1. Posture can be static or dynamic, with static involving maintaining certain body positions and dynamic involving body movement.
2. Maintaining upright posture allows humans to use their arms while increasing stress on the back and reducing stability.
3. Postural control involves the central nervous system integrating inputs from vision, vestibular, proprioceptive, and musculoskeletal systems.
4. Perturbations displace the body from equilibrium, requiring compensatory responses like ankle, hip, or change of support strategies to restore stability.
This document provides an analysis of posture including definitions, types of posture, and the key body structures and forces involved in maintaining posture. It discusses static and dynamic posture and defines the concepts of center of gravity, base of support, and line of gravity. It describes the various systems that contribute to postural control and different postural responses to perturbations. Finally, it analyzes posture in the sagittal plane and the forces acting on the ankle, knee, hip, and lumbosacral joint regions.
BALANCE
BALANCE SYSTEM
TYPES OF BALANCE
MECHANISM
CORRELATION
BALANCE TRAINING
MANAGEMENT
STRATEGIES
PHYSIOTHERAPY INTERVENTION
BALANCE TRAINING IN ELDERLY
OUTCOME MEASURES
Detailed explanation about balance and balance training.
Balance refers to an individuals ability to maintain their line of gravity within their Base of support (BOS). It can also be described as the ability to maintain equilibrium, where equilibrium can be defined as any condition in which all acting forces are cancelled by each other resulting in a stable balanced system.
BALANCE SYSTEMS:
The following systems provides input regarding the body's equilibrium and thus maintains balance.
Somatosensory / Proprioceptive System
Vestibular System
Visual System
The Central Nervous System receives feedback about the body orientation from these three main sensory systems and integrates this sensory feedback and subsequently generates a corrective, stabilizing torque by selectively activating muscles. In normal condition, healthy subjects rely 70% on somatosensory information and 20% Vestibular & 10% on Vision on firm surface but change to 60% vestibular information, 30% Vision & 10% somatosensory on unstable surface.
SOMATOSENSORY SYSTEM:
Proprioceptive information from spino-cerebellar pathways, processed unconsciously in the cerebellum, are required to control postural balance. Proprioceptive information has the shortest time delays, with monosynaptic pathways that can process information as quickly as 40–50 ms and hence the major contributor for postural control in normal conditions.
VESTIBULAR SYSTEM:
The vestibular system generates compensatory responses to head motion via:
Postural responses (Vestibulo-Spinal Reflex) - keep the body upright and prevent falls when the body is unexpectedly knocked off balance.
Ocular-motor responses (Vestibulo-Ocular Reflex) - allows the eyes to remain steadily focused while the head is in motion.
Visceral responses (Vestibulo-Colic Reflex) - help keep the head and neck centred, steady, and upright on the shoulders.
VISUAL SYSTEM:
For non-impaired individuals, under normal conditions the contribution of visual system to postural control is partially redundant as the visual information has longer time delays as long as 150-200 ms.
Friedrich et al. observed that adults with visual disorders were able to adapt peripheral, vestibular, somatosensory perception and cerebellar processing to compensate for their visual information deficit and to provide good postural control.
In addition, Peterka found that adults with bilateral vestibular deficits can enhance their visual and proprioceptive information even more than healthy adults in order to reach effective postural stability.
The influence of moving visual fields on postural stability depends on the characteristics of the visual environment, and of the support surface, including the size of the base of support, its rigidity or compliance.
TYPES OF BALANCE:
Balance can be classified in to :
Static Balance:
Dynamic Balance
This document provides an overview of posture biomechanics, including:
1. Definitions of static and dynamic posture, and descriptions of optimal sagittal and frontal plane alignment.
2. Explanations of how posture is controlled through sensory inputs, muscle activity, and strategies like fixed support and changing support.
3. Analyses of deviations from optimal posture, including positions of the foot, knee, spine, and effects of sitting and lying postures. Factors like age, gender, and occupation are also discussed.
This document discusses posture and postural alignment. It defines posture and recognizes the importance of maintaining proper spinal curves and alignment with gravity. The document outlines the objectives of understanding posture, identifies the types of posture, and discusses the factors that can affect posture like age, pregnancy, muscle imbalances, and occupations. It also differentiates the muscles of the spine and explores methods of assessing posture, including X-rays, 3D motion analysis, raster stereography, and physical measurements.
This document discusses various aspects of human posture, including static and dynamic postures, the center of gravity, base of support, and synergies. It describes how the central nervous system interprets sensory inputs to maintain an upright posture through reactive and anticipatory responses. Factors that can alter inputs or outputs like injury or muscle atrophy are also discussed. The document covers external forces like gravity and ground reaction forces, as well as internal muscle forces, that maintain equilibrium. It examines postural sway and gravitational torques on body segments in standing.
The document discusses the neural control of human locomotion. It states that locomotion requires progression, postural control, and adaptation. It is controlled by the coordinated actions of the neurologic, muscular and skeletal systems through various chains including sensorimotor chains. The nervous system generates locomotor patterns and coordinates multi-limb movements while accounting for environmental factors. Both lower motor neurons and supraspinal centers receive convergent input which allows locomotion to be adapted based on context.
This document discusses postural control and balance. It defines balance and describes the three types of balance control: adaptive, reactive, and proactive. These involve complex interactions between motor responses, sensory systems like vision and somatosensation, and central nervous system integration. The document outlines several functional balance tests used in assessment, including limits of stability, Romberg testing, and the Berg Balance Scale. Sensory organization is described along with strategies for maintaining balance like ankle, hip, and stepping strategies.
This document provides information about balance, equilibrium, and exercises to improve balance. It defines balance as maintaining the body's position in equilibrium. Equilibrium means the body is either at rest or steady motion. Balance is achieved when the center of mass is over the base of support. Sensory systems like visual, somatosensory, and vestibular provide information about body position. Tests are used to assess balance and identify impairments. Balance exercises improve agility, stability, and fall prevention. Static exercises maintain postures while dynamic exercises involve movement. The Otego home exercise program uses exercises like sit-to-stand, tandem walking, knee extension, toe standing, and heel standing to improve balance, strength, posture,
Breaking the mould of human anatomical understandingGary Ward
Biomechanics and Physics combine to fight keep the Human machine upright, mobile and in a performance state of various guises. Corrective Exercise requires a sound understanding of all things that affect the postural shapes and functional capacities of the human body.
Human gait involves a highly coordinated cyclic motion of the limbs to propel the body forward. The gait cycle consists of a stance phase where the foot is on the ground and a swing phase where it is off the ground. During stance, the body's center of mass falls forward to provide momentum for walking. Key muscle groups like the gastrocnemius help provide this forward propulsion. The central nervous system precisely controls muscles to maintain stability and balance during walking. Abnormalities can disrupt this coordination and cause deviations from normal gait patterns.
Human posture is influenced by mechanical, anatomical, and physiological factors. A good posture protects the body from injury by maintaining balanced alignment. It differs between individuals based on their body type and environment. Posture is dynamic and changes with body position and movement throughout life. It involves control systems to counteract gravity and stabilize body segments during both static and dynamic activities.
HUMAN POSTURE and it is help full for physiotherapy and neursing students.PPTMunnaKendre
The document discusses human posture from several perspectives. It defines posture as the relative arrangement of body parts and notes that it can vary based on activity and over time. A good posture is described as muscular and skeletal balance that protects the body from injury while allowing efficient muscle function. Several factors are described that can influence posture, including mechanical factors like body structure and the line of gravity, as well as psychological and environmental factors. Different types of postures like easy, fatigue, and rigid postures are also outlined. Faulty posture is defined as an asymmetrical strain on the body that can lead to long-term joint and muscle issues if not addressed.
Stretching involves extending a muscle or tendon to improve elasticity and muscle tone. The document defines terms related to stretching including mobility, flexibility, dynamic flexibility, passive flexibility, hypomobility, contracture, and types of contractures. It provides details on myostatic, pseudomyostatic, arthrogenic, periarticular, and fibrotic contractures. The indications and contraindications for stretching exercises are also outlined.
Active assistive exercises are exercises performed with partial assistance from an external force such as a therapist or mechanical device. They are used when muscles are too weak to move or control a joint on their own. There are two main types of assistance - manual assistance from a therapist or sound limb, and mechanical assistance using devices like pulleys, slings, or wheels. Proper application of active assistive exercises provides support and guidance in the direction of muscle action while gradually reducing assistance as strength improves.
This document defines posture and describes the different types of posture including static, dynamic, and abnormal postures. It discusses postural control and how it is maintained through various body systems. Key points of postural control include control of body orientation in space, maintaining center of gravity over base of support, and stabilizing the head. The document also examines postural strategies like fixed support synergies and changing support synergies that help restore equilibrium when perturbed. Sitting and lying postures are analyzed as well in terms of alignment and pressures on the spine.
Introduction to Balance and its concepts, Impaired balance and then management of impaired balance.
Based on Therapeutic Exercise Foundations and Techniques
This document discusses motor control and postural control. It defines motor control as the study of movement, which arises from the interaction of perception, cognition, individual characteristics, task constraints, and environmental factors. Postural control maintains stability and orientation through steady-state, reactive, and proactive balance. Steady-state balance involves alignment and muscle tone to counteract gravity. Reactive balance uses strategies like ankle/hip adjustments or changing support when perturbed. Proactive balance anticipates forces through sensory information and experience to stabilize movements like lifting objects. Environmental constraints and cognitive loads also influence balance control.
Posture - a perquisite for functional abilities in daily life. Posture is a combination of anatomy and physiology with inherent application of bio-mechanics and kinematics. Sitting, standing, walking are all functional activities depending on the ability of the body to support that posture to carry out each activity. Injuries and pathologies either postural or structural can massively change the bio-mechanics of posture and thus affect functional abilities.
This document summarizes key concepts about posture including:
1. Posture can be static or dynamic, with static involving maintaining certain body positions and dynamic involving body movement.
2. Maintaining upright posture allows humans to use their arms while increasing stress on the back and reducing stability.
3. Postural control involves the central nervous system integrating inputs from vision, vestibular, proprioceptive, and musculoskeletal systems.
4. Perturbations displace the body from equilibrium, requiring compensatory responses like ankle, hip, or change of support strategies to restore stability.
This document provides an analysis of posture including definitions, types of posture, and the key body structures and forces involved in maintaining posture. It discusses static and dynamic posture and defines the concepts of center of gravity, base of support, and line of gravity. It describes the various systems that contribute to postural control and different postural responses to perturbations. Finally, it analyzes posture in the sagittal plane and the forces acting on the ankle, knee, hip, and lumbosacral joint regions.
BALANCE
BALANCE SYSTEM
TYPES OF BALANCE
MECHANISM
CORRELATION
BALANCE TRAINING
MANAGEMENT
STRATEGIES
PHYSIOTHERAPY INTERVENTION
BALANCE TRAINING IN ELDERLY
OUTCOME MEASURES
Detailed explanation about balance and balance training.
Balance refers to an individuals ability to maintain their line of gravity within their Base of support (BOS). It can also be described as the ability to maintain equilibrium, where equilibrium can be defined as any condition in which all acting forces are cancelled by each other resulting in a stable balanced system.
BALANCE SYSTEMS:
The following systems provides input regarding the body's equilibrium and thus maintains balance.
Somatosensory / Proprioceptive System
Vestibular System
Visual System
The Central Nervous System receives feedback about the body orientation from these three main sensory systems and integrates this sensory feedback and subsequently generates a corrective, stabilizing torque by selectively activating muscles. In normal condition, healthy subjects rely 70% on somatosensory information and 20% Vestibular & 10% on Vision on firm surface but change to 60% vestibular information, 30% Vision & 10% somatosensory on unstable surface.
SOMATOSENSORY SYSTEM:
Proprioceptive information from spino-cerebellar pathways, processed unconsciously in the cerebellum, are required to control postural balance. Proprioceptive information has the shortest time delays, with monosynaptic pathways that can process information as quickly as 40–50 ms and hence the major contributor for postural control in normal conditions.
VESTIBULAR SYSTEM:
The vestibular system generates compensatory responses to head motion via:
Postural responses (Vestibulo-Spinal Reflex) - keep the body upright and prevent falls when the body is unexpectedly knocked off balance.
Ocular-motor responses (Vestibulo-Ocular Reflex) - allows the eyes to remain steadily focused while the head is in motion.
Visceral responses (Vestibulo-Colic Reflex) - help keep the head and neck centred, steady, and upright on the shoulders.
VISUAL SYSTEM:
For non-impaired individuals, under normal conditions the contribution of visual system to postural control is partially redundant as the visual information has longer time delays as long as 150-200 ms.
Friedrich et al. observed that adults with visual disorders were able to adapt peripheral, vestibular, somatosensory perception and cerebellar processing to compensate for their visual information deficit and to provide good postural control.
In addition, Peterka found that adults with bilateral vestibular deficits can enhance their visual and proprioceptive information even more than healthy adults in order to reach effective postural stability.
The influence of moving visual fields on postural stability depends on the characteristics of the visual environment, and of the support surface, including the size of the base of support, its rigidity or compliance.
TYPES OF BALANCE:
Balance can be classified in to :
Static Balance:
Dynamic Balance
This document provides an overview of posture biomechanics, including:
1. Definitions of static and dynamic posture, and descriptions of optimal sagittal and frontal plane alignment.
2. Explanations of how posture is controlled through sensory inputs, muscle activity, and strategies like fixed support and changing support.
3. Analyses of deviations from optimal posture, including positions of the foot, knee, spine, and effects of sitting and lying postures. Factors like age, gender, and occupation are also discussed.
This document discusses posture and postural alignment. It defines posture and recognizes the importance of maintaining proper spinal curves and alignment with gravity. The document outlines the objectives of understanding posture, identifies the types of posture, and discusses the factors that can affect posture like age, pregnancy, muscle imbalances, and occupations. It also differentiates the muscles of the spine and explores methods of assessing posture, including X-rays, 3D motion analysis, raster stereography, and physical measurements.
This document discusses various aspects of human posture, including static and dynamic postures, the center of gravity, base of support, and synergies. It describes how the central nervous system interprets sensory inputs to maintain an upright posture through reactive and anticipatory responses. Factors that can alter inputs or outputs like injury or muscle atrophy are also discussed. The document covers external forces like gravity and ground reaction forces, as well as internal muscle forces, that maintain equilibrium. It examines postural sway and gravitational torques on body segments in standing.
The document discusses the neural control of human locomotion. It states that locomotion requires progression, postural control, and adaptation. It is controlled by the coordinated actions of the neurologic, muscular and skeletal systems through various chains including sensorimotor chains. The nervous system generates locomotor patterns and coordinates multi-limb movements while accounting for environmental factors. Both lower motor neurons and supraspinal centers receive convergent input which allows locomotion to be adapted based on context.
This document discusses postural control and balance. It defines balance and describes the three types of balance control: adaptive, reactive, and proactive. These involve complex interactions between motor responses, sensory systems like vision and somatosensation, and central nervous system integration. The document outlines several functional balance tests used in assessment, including limits of stability, Romberg testing, and the Berg Balance Scale. Sensory organization is described along with strategies for maintaining balance like ankle, hip, and stepping strategies.
This document provides information about balance, equilibrium, and exercises to improve balance. It defines balance as maintaining the body's position in equilibrium. Equilibrium means the body is either at rest or steady motion. Balance is achieved when the center of mass is over the base of support. Sensory systems like visual, somatosensory, and vestibular provide information about body position. Tests are used to assess balance and identify impairments. Balance exercises improve agility, stability, and fall prevention. Static exercises maintain postures while dynamic exercises involve movement. The Otego home exercise program uses exercises like sit-to-stand, tandem walking, knee extension, toe standing, and heel standing to improve balance, strength, posture,
Breaking the mould of human anatomical understandingGary Ward
Biomechanics and Physics combine to fight keep the Human machine upright, mobile and in a performance state of various guises. Corrective Exercise requires a sound understanding of all things that affect the postural shapes and functional capacities of the human body.
Human gait involves a highly coordinated cyclic motion of the limbs to propel the body forward. The gait cycle consists of a stance phase where the foot is on the ground and a swing phase where it is off the ground. During stance, the body's center of mass falls forward to provide momentum for walking. Key muscle groups like the gastrocnemius help provide this forward propulsion. The central nervous system precisely controls muscles to maintain stability and balance during walking. Abnormalities can disrupt this coordination and cause deviations from normal gait patterns.
Human posture is influenced by mechanical, anatomical, and physiological factors. A good posture protects the body from injury by maintaining balanced alignment. It differs between individuals based on their body type and environment. Posture is dynamic and changes with body position and movement throughout life. It involves control systems to counteract gravity and stabilize body segments during both static and dynamic activities.
HUMAN POSTURE and it is help full for physiotherapy and neursing students.PPTMunnaKendre
The document discusses human posture from several perspectives. It defines posture as the relative arrangement of body parts and notes that it can vary based on activity and over time. A good posture is described as muscular and skeletal balance that protects the body from injury while allowing efficient muscle function. Several factors are described that can influence posture, including mechanical factors like body structure and the line of gravity, as well as psychological and environmental factors. Different types of postures like easy, fatigue, and rigid postures are also outlined. Faulty posture is defined as an asymmetrical strain on the body that can lead to long-term joint and muscle issues if not addressed.
Stretching involves extending a muscle or tendon to improve elasticity and muscle tone. The document defines terms related to stretching including mobility, flexibility, dynamic flexibility, passive flexibility, hypomobility, contracture, and types of contractures. It provides details on myostatic, pseudomyostatic, arthrogenic, periarticular, and fibrotic contractures. The indications and contraindications for stretching exercises are also outlined.
Active assistive exercises are exercises performed with partial assistance from an external force such as a therapist or mechanical device. They are used when muscles are too weak to move or control a joint on their own. There are two main types of assistance - manual assistance from a therapist or sound limb, and mechanical assistance using devices like pulleys, slings, or wheels. Proper application of active assistive exercises provides support and guidance in the direction of muscle action while gradually reducing assistance as strength improves.
Diadynamic current is a type of electrotherapy that uses a low current for analgesic and spasmolytic effects. It is a mixed current that combines galvanic and faradic/impulse currents to induce hyperaemia and analgesia. There are different types of diadynamic currents characterized by waveform that have inhibitory or facilitatory effects depending on frequency and intensity. Common applications include pain relief, increasing local circulation, and decreasing inflammation.
The knee is the largest and most complicated joint in the human body. It consists of two condylar joints between the femur and tibia, as well as the patellofemoral joint. The stability of the knee relies primarily on soft tissues like ligaments rather than bony structure. The knee joint is divided into the medial and lateral compartments by the menisci. It contains several important ligaments like the ACL, PCL, MCL and LCL that provide stability. The muscles that act on the knee include the quadriceps, hamstrings, pes anserine group and iliotibial band.
The document describes various starting positions for movement in physical therapy, including standing, kneeling, sitting, lying, and hanging. For each position, it outlines the muscle groups involved in maintaining proper alignment, the stability and effects of the position, and some variations or derived positions. The main positions allow different levels of stability and load on the body to train control and range of motion in different joints.
Therapeutic exercise aims to treat diseases and injuries. There are two main types - passive and active movements. Passive movements are externally assisted and aim to maintain range of motion. Active movements involve patient effort and can be assisted, free, or resisted. The document outlines guidelines for applying range of motion exercises safely and effectively based on a patient's condition and goals. Progressive resistance training is also discussed as a method to gradually increase muscle strength over time.
Giloy in Ayurveda - Classical Categorization and SynonymsPlanet Ayurveda
Giloy, also known as Guduchi or Amrita in classical Ayurvedic texts, is a revered herb renowned for its myriad health benefits. It is categorized as a Rasayana, meaning it has rejuvenating properties that enhance vitality and longevity. Giloy is celebrated for its ability to boost the immune system, detoxify the body, and promote overall wellness. Its anti-inflammatory, antipyretic, and antioxidant properties make it a staple in managing conditions like fever, diabetes, and stress. The versatility and efficacy of Giloy in supporting health naturally highlight its importance in Ayurveda. At Planet Ayurveda, we provide a comprehensive range of health services and 100% herbal supplements that harness the power of natural ingredients like Giloy. Our products are globally available and affordable, ensuring that everyone can benefit from the ancient wisdom of Ayurveda. If you or your loved ones are dealing with health issues, contact Planet Ayurveda at 01725214040 to book an online video consultation with our professional doctors. Let us help you achieve optimal health and wellness naturally.
PGx Analysis in VarSeq: A User’s PerspectiveGolden Helix
Since our release of the PGx capabilities in VarSeq, we’ve had a few months to gather some insights from various use cases. Some users approach PGx workflows by means of array genotyping or what seems to be a growing trend of adding the star allele calling to the existing NGS pipeline for whole genome data. Luckily, both approaches are supported with the VarSeq software platform. The genotyping method being used will also dictate what the scope of the tertiary analysis will be. For example, are your PGx reports a standalone pipeline or would your lab’s goal be to handle a dual-purpose workflow and report on PGx + Diagnostic findings.
The purpose of this webcast is to:
Discuss and demonstrate the approaches with array and NGS genotyping methods for star allele calling to prep for downstream analysis.
Following genotyping, explore alternative tertiary workflow concepts in VarSeq to handle PGx reporting.
Moreover, we will include insights users will need to consider when validating their PGx workflow for all possible star alleles and options you have for automating your PGx analysis for large number of samples. Please join us for a session dedicated to the application of star allele genotyping and subsequent PGx workflows in our VarSeq software.
Nano-gold for Cancer Therapy chemistry investigatory projectSIVAVINAYAKPK
chemistry investigatory project
The development of nanogold-based cancer therapy could revolutionize oncology by providing a more targeted, less invasive treatment option. This project contributes to the growing body of research aimed at harnessing nanotechnology for medical applications, paving the way for future clinical trials and potential commercial applications.
Cancer remains one of the leading causes of death worldwide, prompting the need for innovative treatment methods. Nanotechnology offers promising new approaches, including the use of gold nanoparticles (nanogold) for targeted cancer therapy. Nanogold particles possess unique physical and chemical properties that make them suitable for drug delivery, imaging, and photothermal therapy.
Spontaneous Bacterial Peritonitis - Pathogenesis , Clinical Features & Manage...Jim Jacob Roy
In this presentation , SBP ( spontaneous bacterial peritonitis ) , which is a common complication in patients with cirrhosis and ascites is described in detail.
The reference for this presentation is Sleisenger and Fordtran's Gastrointestinal and Liver Disease Textbook ( 11th edition ).
Know the difference between Endodontics and Orthodontics.Gokuldas Hospital
Your smile is beautiful.
Let’s be honest. Maintaining that beautiful smile is not an easy task. It is more than brushing and flossing. Sometimes, you might encounter dental issues that need special dental care. These issues can range anywhere from misalignment of the jaw to pain in the root of teeth.
Osvaldo Bernardo Muchanga-GASTROINTESTINAL INFECTIONS AND GASTRITIS-2024.pdfOsvaldo Bernardo Muchanga
GASTROINTESTINAL INFECTIONS AND GASTRITIS
Osvaldo Bernardo Muchanga
Gastrointestinal Infections
GASTROINTESTINAL INFECTIONS result from the ingestion of pathogens that cause infections at the level of this tract, generally being transmitted by food, water and hands contaminated by microorganisms such as E. coli, Salmonella, Shigella, Vibrio cholerae, Campylobacter, Staphylococcus, Rotavirus among others that are generally contained in feces, thus configuring a FECAL-ORAL type of transmission.
Among the factors that lead to the occurrence of gastrointestinal infections are the hygienic and sanitary deficiencies that characterize our markets and other places where raw or cooked food is sold, poor environmental sanitation in communities, deficiencies in water treatment (or in the process of its plumbing), risky hygienic-sanitary habits (not washing hands after major and/or minor needs), among others.
These are generally consequences (signs and symptoms) resulting from gastrointestinal infections: diarrhea, vomiting, fever and malaise, among others.
The treatment consists of replacing lost liquids and electrolytes (drinking drinking water and other recommended liquids, including consumption of juicy fruits such as papayas, apples, pears, among others that contain water in their composition).
To prevent this, it is necessary to promote health education, improve the hygienic-sanitary conditions of markets and communities in general as a way of promoting, preserving and prolonging PUBLIC HEALTH.
Gastritis and Gastric Health
Gastric Health is one of the most relevant concerns in human health, with gastrointestinal infections being among the main illnesses that affect humans.
Among gastric problems, we have GASTRITIS AND GASTRIC ULCERS as the main public health problems. Gastritis and gastric ulcers normally result from inflammation and corrosion of the walls of the stomach (gastric mucosa) and are generally associated (caused) by the bacterium Helicobacter pylor, which, according to the literature, this bacterium settles on these walls (of the stomach) and starts to release urease that ends up altering the normal pH of the stomach (acid), which leads to inflammation and corrosion of the mucous membranes and consequent gastritis or ulcers, respectively.
In addition to bacterial infections, gastritis and gastric ulcers are associated with several factors, with emphasis on prolonged fasting, chemical substances including drugs, alcohol, foods with strong seasonings including chilli, which ends up causing inflammation of the stomach walls and/or corrosion. of the same, resulting in the appearance of wounds and consequent gastritis or ulcers, respectively.
Among patients with gastritis and/or ulcers, one of the dilemmas is associated with the foods to consume in order to minimize the sensation of pain and discomfort.
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Nutritional deficiency Disorder are problems in india.
It is very important to learn about Indian child's nutritional parameters as well the Disease related to alteration in their Nutrition.
Breast cancer: Post menopausal endocrine therapyDr. Sumit KUMAR
Breast cancer in postmenopausal women with hormone receptor-positive (HR+) status is a common and complex condition that necessitates a multifaceted approach to management. HR+ breast cancer means that the cancer cells grow in response to hormones such as estrogen and progesterone. This subtype is prevalent among postmenopausal women and typically exhibits a more indolent course compared to other forms of breast cancer, which allows for a variety of treatment options.
Diagnosis and Staging
The diagnosis of HR+ breast cancer begins with clinical evaluation, imaging, and biopsy. Imaging modalities such as mammography, ultrasound, and MRI help in assessing the extent of the disease. Histopathological examination and immunohistochemical staining of the biopsy sample confirm the diagnosis and hormone receptor status by identifying the presence of estrogen receptors (ER) and progesterone receptors (PR) on the tumor cells.
Staging involves determining the size of the tumor (T), the involvement of regional lymph nodes (N), and the presence of distant metastasis (M). The American Joint Committee on Cancer (AJCC) staging system is commonly used. Accurate staging is critical as it guides treatment decisions.
Treatment Options
Endocrine Therapy
Endocrine therapy is the cornerstone of treatment for HR+ breast cancer in postmenopausal women. The primary goal is to reduce the levels of estrogen or block its effects on cancer cells. Commonly used agents include:
Selective Estrogen Receptor Modulators (SERMs): Tamoxifen is a SERM that binds to estrogen receptors, blocking estrogen from stimulating breast cancer cells. It is effective but may have side effects such as increased risk of endometrial cancer and thromboembolic events.
Aromatase Inhibitors (AIs): These drugs, including anastrozole, letrozole, and exemestane, lower estrogen levels by inhibiting the aromatase enzyme, which converts androgens to estrogen in peripheral tissues. AIs are generally preferred in postmenopausal women due to their efficacy and safety profile compared to tamoxifen.
Selective Estrogen Receptor Downregulators (SERDs): Fulvestrant is a SERD that degrades estrogen receptors and is used in cases where resistance to other endocrine therapies develops.
Combination Therapies
Combining endocrine therapy with other treatments enhances efficacy. Examples include:
Endocrine Therapy with CDK4/6 Inhibitors: Palbociclib, ribociclib, and abemaciclib are CDK4/6 inhibitors that, when combined with endocrine therapy, significantly improve progression-free survival in advanced HR+ breast cancer.
Endocrine Therapy with mTOR Inhibitors: Everolimus, an mTOR inhibitor, can be added to endocrine therapy for patients who have developed resistance to aromatase inhibitors.
Chemotherapy
Chemotherapy is generally reserved for patients with high-risk features, such as large tumor size, high-grade histology, or extensive lymph node involvement. Regimens often include anthracyclines and taxanes.
Travel Clinic Cardiff: Health Advice for International TravelersNX Healthcare
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1. DR.MOHAMMAD SHAFIQUE ASGHAR
A U . D , ( U S A ) .
A M E R I C A N B O A R D O F A U D I O L O G Y ,
( B O A R D C E R T I F I E D A U D I O L O G I S T ) .
M . S C A U D I O L O G I C A L M E D I C I N E , ( U K ) .
M C P S ( E N T ) , M , B . B , S ( P B ) .
Balance Assessment
3. Introduction.
In mid 80’s after work done by Horak, Henry and
Shumway-Cook) the stress changed from ear to
Equilibrium.
Different tests were evolved to test the balance
function and recovery of astronauts after descent.
4. Introduction. (cont)..
CTSIB (clinical test for sensory integration of Balance)
CDP (Computerized Dynamic Posturography)
These tests were evolved to differentiate between ,
vest, visual, and central lesions.
Generally:
Vest lesions = 66%
Visual and CNS = 33%
5. Postural control system
1. Neural and musculoskeletal components, involved
in maintaining orientation in the environment.
2. Functions
a) Resist gravity
b) Background muscle tone
6. Postural equilibrium:
Condition in which all the forces acting on the body
are balanced such that the COG is controlled relative
to BOS.
7. Balance
An individuals ability to maintain their COG over
their BOS in a given sensory environment.
Skill the CNS learns to accomplish using multiple
interacting system, including passive
biomechanical elements, all available sensory
systems and muscles, and many different parts of
the brain. Equilibrium control is quite proactive ,
adaptive and centrally based upon prior experience
and intension. (Horak, Henry, and Shumway-
Cook).
8. Center of gravity
During erect standing with the arms at the side and
folded at the waist COG is located in the area of
lower abdomen.
In a normal person standing erect COG is placed
accurately above the center of base of support.
9. Base of support
The area contained within the perimeter of contact
between surface and the two feet.
10. Limits of stability
This is a two dimensional quantity defining the
maximum possible COG sway angle as a function of
sway direction from the center position.
11. System Model of Equilibrium.
A systemic approach to functional
balance/postural control involving
multiple interacting sensory and motor
components.
13. B: Central sensory organization
1. Process by which sensory information is correlated
and synthesized.
2. Normal sensory organization is necessary for
maintenance of balance.
3. During sensory conflict situation the brain must
quickly sensory inputs providing accurate
orientation information and ignore the misleading
information..
15. D: Central Motor response.
1. Postural strategies or synergies that;
a) Minimize sway,
b) Maintain the body’s COG within BOS
c) Control movement of COM over the BOS.
2. Reactive / Compensatory
3. Proactive / Predictive
4. CNS organized patterns of muscle activity that are
flexible, adaptable
16. D: Central motor responses (cont)…
5. Strategies are limited by internal/external
constraints
6. Responsive to learning and intention
7. Reflexes
a) Short latency (40-59 msec)
b) Stereotyped reflexes regulate muscle force in response to
external stimulus.
17. D: Central motor responses (cont)…
8. Automatic postural responses.
a) Reactivity/Compensatory
b) Elicited by external stimulus
c) Response matched to stimulus
d) Rapid short latency (70-180 msec).
e) Ankle strategy (fixed support).
f) Hip strategy (fixed support)
g) Stepping or compensatory Grasp strategies
(change in support).
18. D: Central motor responses (cont)…
9. Anticipatory postural responses.
a) Similar to automatic, but preparatory in nature
b) Proactive / Predictive responses.
c) Elicited by an expectation of disturbance of COG.
d) Onset of postural muscle activation in advance of
movement.
19. D: Central motor responses (cont)…
10. Volitional postural movements.
a) Movement patterns under volitional control.
b) Self-initiated or elicited by external stimulus.
c) No fixed relationship between stimulus and movement
pattern
d) Slower (180-250 msec).
21. Balance disorders can be due to…
1. The position of COG relative to the BOS is not
sensed accurately. ( Sensory function loss)
2. The automatic movements required to bring the
COG to a balanced position are timely or
effectively coordinated. ( Motor function loss)
23. Visual system.
Vision measures the orientation of eyes and head in
relation surrounding objects.
Vision plays a significant role in balance, especially
when the support surface is unstable.
24. Somatosensory system
Somatosensory input provides information on the
orientation of body parts relative to one another
and to support surface.
Somatosensory input is provided by:
Tactile, deep pressure , joint receptors and
muscle proprioceptors.
Somatosensory input from the contact forces and
motion between the feet and support surface is the
dominant sensory input to balance under normal
(fixed support) conditions.
25. Vestibular system
It does not provide input in relation to external
objects.
It measures gravitational linear and angular
acceleration of the head in relation to inertial space.
26. Vestibular system (cont)…
When functionally useful somatosensory and
visual inputs are available vestibular inputs plays
plays a minor role in controlling COG. This is
because somatosensory and visual inputs are more
sensitive to body sway than the vestibular system.
Vestibular input becomes more important in cases
of misleading visual or somatosensory inputs.
27. Utilization of sense of Balance
Sense Reference Conditions favoring
the Use
Conditions
disrupting Use
Somatosen
sory
Support surface Fixed support surface Irregular or moving
support
Visual Surrounding
objects
Fixed visible
surrounds
Moving
surrounds/darkness
Vestibular Gravity and
inertial space
Irregular or moving
support and moving
surrounds or darkness
Unusual motion
environment.
28. Motor control of Balance
There are principle joint systems involved
between the BOS and COG
1. Ankle
2. Knee
3. And hip
29. Anatomy of physiology of Movements
Generally the motion about a joint is controlled
by the combined action of at least one pair of
muscles working in opposition.
Many leg muscles act on two different joints.
31. Properties of three Movement systems
Movement systems
Property Reflex Automatic Voluntary
Mediating Pathways Spinal cord Brainstem and
subcortical
Brainstem and
cortical
Mode of activation External
stimulus
External
stimulus
Self generated or
external stimulus
Response properties Localized to
point of
stimulus
and highly
stereotyped
Coordinated
among leg and
trunk muscles,
and stereotyped
but adaptable
Limitless variety
32. Properties of Movement systems (cont)…
Movement systems
Property Reflex Automatic Voluntary
Role in posture
control
Regulate
muscle
forces
Coordinate
movements
across joints
Generate
purposeful
behaviors
Response times Fixed at
40 msec
Fixed at 100
msec
Varies with
difficulty,
150+ msec
33. Coordination of postural movements into
strategies.
When a persons balance is disturbed by an
external perturbation, one or combination of
three different strategies can be used to
coordinate movement of COG back to balanced
position
34. Strategies used are….
1. Ankle strategy
2. Hip strategy
3. Stepping strategy.
A step or stumbling reaction is the only movement
strategy effective in preventing a fall when the
perturbation displaces the COG beyond the LOS
perimeter.
35. Strategies (cont)…
In case the COG remains within the LOS, two
strategies (Ankle and Hip) or combination of both
is used to move the COG while maintaining the
initial placement of the feet on the support surface.
A step or stumbling reaction is the only movement
strategy effective in preventing a fall when the
perturbation displaces the COG beyond the LOS
perimeter.
36. Ankle strategy
The ankle strategy shifts the COG while
maintaining the placement of the feet by
rotating the body as an approximate rigid mass
about the ankle
Latency of the response is 90-100 msec.
37. Hip strategy
The movements are centered at hip joint.
The COG shifts in the direction opposite to the hip
because of the inertia of the trunk (moving in one
direction), generating an opposite horizontal (shear)
reaction force against the support surface.
Latency f the response is 85-95 msec.
38. Appropriate use of Postural movement strategies.
The relative effectiveness of ankle, hip and
stepping strategies in repositioning the COG over
BOS depends upon:
i. Configuration of BOS
ii. Cog alignment in relation to LOS
iii. And speed of postural movement.
39. Ankle strategy
Most effective in executing in relatively slow COG
movements, when the BOS is firm.
And COG is well within the LOS. It also helps in
maintaining static posture with COG offset from
center.
40. Ankle strategy: Limitations
The amplitude and speed of the ankle
movements are biomechanically limited by the
torque that can be exerted about the ankle
before the feet lift off from the support surface.
41. Hip strategy
Hip strategy is effective when COG is positioned near
the LOS perimeter.
And when LOS boundaries are contracted by
narrowed BOS.
Hip strategy rely on the horizontal shear force. And
so is not limited by the ankle torque.
42. Hip strategy: Limitations
They can not produce larger shifts in COG.
Because hip strategy rely on inertial reaction forces ,
they can not be used to maintain balance effectively
with the COG offset from the center.
43. Stepping strategy
When COG is displayed beyond the LOS , a step or
stumbling reaction is the only movement strategy
effective in preventing a fall.
44. Stepping Strategy: Limitations
Stepping strategy has fewer biomechanical
limitations, it is inefficient, disruptive and usually
inappropriate, when simpler ankle and hip
movements are effective.
45. Selecting a Postural strategy
It depends upon the persons past experience
and not the conscious decision.
46. Coordination of Head and Body Movements
During standing position the movement of the
head relative to trunk has a minor effect as mass of
the head is substantially smaller than the trunk.
But during motion of head during postural sway is
important , because they have strong influence on
two of the two of the three principle senses of
balance: Vision and vestibular system.
48. Coordination of Head and Body Movements
These can be classified into.
1. Trunk fixed
2. Gravity fixed
3. Combination of both.
49. Trunk fixed strategy
The head and trunk move as a unit.
Thus the strategy fixes the movements of the head
relative to the trunk.
50. Gravity fixed
This strategy rotates the head in opposite to the
trunk so that the head remains level relative to the
gravitational vertical.
51. Interaction between
Sensory & Motor Components of Balance
The pattern of ankle, knee, hip and head
movements strongly influence the visual and
vestibular inputs to balance.
52. In Normal Individuals
Movements of the head and body are coordinated
when a hip strategy is used, during in place
standing and when running jumping and hopping.
During these movements head is approximately
stabilized relative to gravitational vertical.
The motions of the head and body are coordinated
at automatic level of control.
53. In Vestibular disorder Patients
Patients with bilateral loss of vestibular system
inputs avoid hip movements under all conditions
even though they have no motor defects that impair
their hip movement control
These patients also tend to fix the position of the
head relative to the trunk.
54. Patients with Somatosensory inputs
Patients deprived of somatosensory input from the
feet by transient ischemia prefer hip strategy under
all support surface conditions even though the
sensory loss does not impair their ability to execute
ankle movements.
55. Interaction between
Sensory & Motor Components of Balance
During complex movements the COG position is
more difficult to determine from vestibular and
visual input.
This process is simplified by the stabilizing the
position of the head relative to the gravity.
56. Conclusion
Balance is a multi-component and highly adaptable
control process.
When the balance of a healthy individual is
challenged:
The sensory inputs determine the COG position and the
pattern of movement correcting the perturbation
It depends upon the task conditions and the persons
immediate past experience.