This document discusses exercise physiology and the structure and function of exercising muscle. It begins by defining anatomy, physiology, exercise physiology, and sports physiology. It then describes the structure of muscle including the epimysium, perimysium, endomysium, plasmalemma, sarcoplasm, transverse tubules, and sarcoplasmic reticulum. It explains the sliding filament theory of muscle contraction which is driven by the hydrolysis of ATP and the release and reuptake of calcium. It concludes by describing the roles of the neuromuscular junction, action potentials, and calcium in initiating and ending muscle contraction.
Aerobic means "with oxygen," and anaerobic means "without oxygen." Anaerobic exercise is the type where you get out of breath in just a few moments, like when you lift weights for improving strength, when you sprint, or when you climb a long flight of stairs.
Aerobic means "with oxygen," and anaerobic means "without oxygen." Anaerobic exercise is the type where you get out of breath in just a few moments, like when you lift weights for improving strength, when you sprint, or when you climb a long flight of stairs.
Taping a therapeutic and a protective approach by physiotherapist having various types; Kineso, McConnell, Rigid, Neutral tape, Mulligan taping techniques.
this slideshow states brief about taping techniques with elaboration of Kinesiotaping technique
McConnell taping technique: 05/04/2020
Other taping techniques: 08/04/2020
The below training fitness standards are different from the Applicant Physical Abilities Test (APAT) fitness standards.
This hand-out has been designed to educate the reader on the United States Secret Service Physical Fitness standards and the proper protocols necessary to accomplish those standards. Recruits who will be attending training at the James J. Rowley Training Center (JJRTC) are expected to arrive in good physical condition, ready to begin a functional fitness program.
The fitness evaluation measures strength, endurance, and aerobic capacity in four core elements. The core elements are Push-ups, Sit-ups, Chin-ups, and the 1.5 mile run. The fitness evaluation will be administered at the beginning, during, and end of training. Secret Service weapon carrying employees are additionally required to participate in the USSS Physical Fitness Evaluation quarterly.
The following point system will be applied to the fitness category level achieved by the student in accordance with their age and gender. The point system will be applied to the four (4) core elements of the U.S. Secret Service Individual Fitness Profile Evaluation.
Massage can alleviate muscle pain. If an athlete
is stiff and sore due to an injury or working hard,
he or she will not be performing at their peak
with regular massage, muscle pain can be
curbed and the athlete can perform.
Taping a therapeutic and a protective approach by physiotherapist having various types; Kineso, McConnell, Rigid, Neutral tape, Mulligan taping techniques.
this slideshow states brief about taping techniques with elaboration of Kinesiotaping technique
McConnell taping technique: 05/04/2020
Other taping techniques: 08/04/2020
The below training fitness standards are different from the Applicant Physical Abilities Test (APAT) fitness standards.
This hand-out has been designed to educate the reader on the United States Secret Service Physical Fitness standards and the proper protocols necessary to accomplish those standards. Recruits who will be attending training at the James J. Rowley Training Center (JJRTC) are expected to arrive in good physical condition, ready to begin a functional fitness program.
The fitness evaluation measures strength, endurance, and aerobic capacity in four core elements. The core elements are Push-ups, Sit-ups, Chin-ups, and the 1.5 mile run. The fitness evaluation will be administered at the beginning, during, and end of training. Secret Service weapon carrying employees are additionally required to participate in the USSS Physical Fitness Evaluation quarterly.
The following point system will be applied to the fitness category level achieved by the student in accordance with their age and gender. The point system will be applied to the four (4) core elements of the U.S. Secret Service Individual Fitness Profile Evaluation.
Massage can alleviate muscle pain. If an athlete
is stiff and sore due to an injury or working hard,
he or she will not be performing at their peak
with regular massage, muscle pain can be
curbed and the athlete can perform.
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Roman architecture and engineering achievements were monumental. They perfected the arch, vault, and dome, constructing enduring structures like the Colosseum, Pantheon, and aqueducts. These engineering marvels not only showcased Roman ingenuity but also served practical purposes, from public entertainment to water supply.
The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
For more information, visit-www.vavaclasses.com
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This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
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Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
2. Introduction
Anatomy
Focuses on the structure of the body parts and their
interrelationship.
Physiology
Study of the body function
Exercise Physiology
Study of how body structures and functions are
altered when exposed to acute bouts of exercise.
Chronic adaptations to exercise.
3. Sports Physiology
Concepts of exercise physiology to training the athlete
and enhancing the athletes sport performance.
Thus it is derived from exercise physiology.
6. Epimysium
Outer connective tissue covering muscle
Surrounds the entire muscle holding it together
Perimysium
Connective tissue surrounding the fasciculus
Endomysium
Surrounds the muscle fiber (10 – 120 micrometer)
7. Do muscle fibers extend from one end of the muscle
to the other?
Muscle bellies often divide into compartments or
more transverse fibrous bands (inscriptions).
9. Plasmalemma
Plasma membrane that surrounds the fiber
Apart of a larger unit called the sarcolemma (plasma
membrane + basement membrane)
@ the end of the muscle fiber it blends with the
tendon which inserts into the bone.
10. Appears as a series of shallow folds along the surface
of the fiber when contracted or rested.
Has junctional folds in the innervation zone at the
motor endplate
Assists with maintaining acid – base balance
Transports metabolites from the capillaries into the
fiber
Satellite cells (growth and development) located in
between plasmalemma and the basement membrane
11. Sarcoplasm
Gelatin like substance that fills the space between the
myofibrils
Contains dissolved
protein, minerals, glycogen, fats, and necessary
organelles.
Differs from the cytoplasm of most cells because it
contains large quantity of stored glycogen and oxygen
binding compound myoglobin.
12. Transverse Tubules
Extensions of the plasmalemma that passes laterally
through the muscle fiber.
Interconnected to allow nerve impulses received to be
transmitted rapidly to individual myofibrils.
Provides pathways from outside to its
interior, allowing substances to enter and waste
products to leave
15. Myofibrils
Contractile elements of the skeletal muscle
Appear as long strands of smaller subunits called the
sarcomeres.
Skeletal muscle has distinct striped appearance.
16. Sarcomeres
BASIC functional unit of a myofibril and the BASIC
contractile unit of the muscle.
Each myofibril consists of numerous sarcomere
joined end to end at the Z disks
18. Thick Filament
2/3 of the skeletal muscle protein is myosin, principal
protein of the thick filament.
Each myosin molecule composed of two protein strands
twisted together.
One end of each strand is folded into a globular head –
myosin head
Myosin head protrudes from the thick filament to form
cross bridges onto the thin filaments.
Titin – array of fine filaments that stabilizes the myosin
from Z to M line.
19. Thin Filaments
Composed of three different protein molecules:
Actin
Tropomyosin
Troponin
One end attached to the Z line and the opposite
extending to the center of the sarcomere, lying in
space between the thick filaments.
20. Nebulin
Anchoring protein for actin
Plays a regulatory role in mediating actin and myosin
interactions
Each thin filament contains active binding sites to
which myosin heads can bind.
21. Actin
Backbone of the thin filament
Individual actin molecules are globular proteins joined end
to end like stands twisted into a helical pattern
Tropomyosin
Tube shaped protein that twists around the actin strands
Troponin
Attached at regular intervals to both the actin strands and
tropomyosin
22.
23.
24. Muscle Fiber
Contraction
α-motor neuron
Neuron that connects with and innervates many
muscle fibers.
Single motor neuron and all the muscle fibers it
supplies are collectively termed a motor unit.
Communication between the nervous system and
muscular system occurs at the neuromuscular
junction (gap between the α-motor neuron and the
muscle fiber)
25.
26. Action Potential
Action potentials (AP) are electrical signals
propagated from the brain or spinal cord to the α-
motor neuron.
From the α-motor neuron dendrites (specialized
receptors on the neuron’s cell body) the AP travels
down the axon to the axon terminals located close to
the plasmalemma.
@ the terminals the nerve ending secretes
achetylcholine (Ach) which binds to the receptors on
the plasmalemma.
27. Enough ACh has to bind to the receptors to allow for
the AP to be transmitted to the ful length of the
muscle fibers.
This open ions gates in the muscle cell membrane
and allows sodium to enter, depolarization.
An AP MUST be generated in the muscle before the
muscle cell can act.
28. Role of Calcium in the
Muscle Fiber
The AP travels over the T-tubules to the interior of
the cell.
The arrival of the electrical charge causes the SR to
release large quantity of calcium (Ca) into the
sarcoplasm.
@ rest tropomyosin covers the myosin binding sites
on the actin, hence preventing the binding of the
myosin heads.
29. Once the Ca ions are released from the SR they bind
to the troponin on the actin molecule.
Troponin has a strong affinity for Ca and is believed
to initiate the contraction process by moving the
tropomyosin molecules off the myosin-binding sites
on the actin molecules.
Once lifted off the the myosin heads can attached to
the binding sites on the actin molecules.
31. Sliding Filament Theory
Once the myosin cross bridges are activated they
bind to actin conformational change in the cross
bridge causing the myosin head to tilt (power
stroke) dragging the thin filament towards the
center of the sarcomere pulling of the thin
filament past the thick filament shortens the
sarcomere and generates force.
32. Immediately after the myosin head tilts it breaks
away from the active site, rotates back to its original
position and attaches to a new active site.
Repeated attachments and power strokes cause the
filament to slide past one another, hence the term
sliding filament theory.
This process continues until the end of the myosin
touches the Z disks, or until the Ca is pumped back
into the SR
33. Energy for Muscle
Contraction
Muscle contraction is a process that requires energy.
In addition to the binding site for actin, the myosin
head contains a binding site for adenosine
triphosphate (ATP).
Myosin MUST bind with ATP for muscle contraction
to occur, because ATP supplies the needed energy.
34. Adenosine triphosphatase (ATPase) – located on the
myosin head, splits the ATP to adenosine
diphosphate (ADP), inorganic phosphate, and energy.
35. Energy released from the ATP is used to power the
tilting of the myosin head.
Thus, ATP is the chemical source of energy for
muscle contraction.
36. End of Muscle
Contraction
Muscle contraction will continue as long as calcium is
available in the sarcoplasm.
@ the end of muscle contraction, Ca is pumped back into
the SR where it is stored until a new AP arrives.
Ca is returned to the SR by an active Ca – pumping system.
This system is energy demanding and hence relies on ATP.
Thus contraction and relaxation phases requires energy.
37. Once Ca is pumped back into the SR, troponin and
tropomyosin return to the resting conformation.
Blocking the linking of myosin cross bridges and
actin molecules, and stops the use of ATP.
Resulting in the thick and thin filaments returning to
their relaxed original state.