Knowing force output is constant from push-up to push-up, how does fatigue impact motor unit recruitment?

Q: Differentiate between Control of Muscle Tension and Control of Shortening Velocity?

A: Muscle tension defined as a condition in which muscle remains in the semi contracted condition for…

Q: a)How does the EMG activity change when the velocity of the contraction is increased? b)What does…

A: EMG records the electrical activity of the muscles.  The muscle consists of muscle fibres which…

Q: What are the physiological causes of muscle fatigue?

A: Muscle fatigue is a common occurrence during or after exercise. It refers to the decrease in a…

Q: Hill's equation gives a relation between muscle contraction rates νν and muscle tension TT…

A: We have to rewrite the equation in a form to show that T is dependent on v including T0, alpha and…

Q: Define the all-or-none principle.

A: According to All-Or-None principle, When threshold stimulus is applied to a neuron then it will…

Q: What happens when theoxygen supply is insufficientto maintain aerobic cellularrespiration during…

A: Cellular respiration is a combination of metabolic reactions that occurs in the cells of organisms.…

Q: During a maximal attempt, one may experience a burning sensation within the muscles being assessed.…

A: The burning sensation experienced during maximal efforts is often associated with fatigue and while…

Q: How do calcium ionsparticipate in musclecontraction? Why do bothmuscle contraction andmuscle…

A: Muscle contraction is the process of activating tension generating sites in the muscle fibers.…

Q: During increases in the force of skeletal-muscle contraction, what is the order of recruitment of…

A: Muscle contraction is done when activation of muscle fiber takes place due to the activation of…

Q: What is the physiologic basis of muscle fatigue?

A: The muscular system of the body is comprised of three different types of muscles. These are-…

Q: List the factors responsible for skeletal muscle fatigue?

A: Muscle fatigue refers to a decrease in muscle strength produced during continuous periods of…

Q: Why do endurance sports require a high proportion of slow-twitchmuscle fibers, whereas power sports…

A: Introduction: Examples of endurance sports including running, biking, swimming. Such sports need…

Q: How can interval training be used to improve both aerobic and anaerobic power?

A: Interval training is used by the athletes to build fitness. It is a combination of short,…

Q: Graph and describe the relationship between movement velocity and the amount of force exerted during…

A: As the force-velocity curve suffering from muscular strength coaching by most circumstances, the…

Q: What is the difference between a myofilament and a myofibril?

A: The muscle is a soft tissue that is highly specialized in creating stress, resulting in strength…

Q: State three or more reasons why muscle twitch strengthcan vary even when stimulus intensity remains…

A: A muscle twitch is also known as muscle fasciculation. It can be defined as the process in which…

Q: Describe the factors that contribute to muscle fatigue.

A: Muscle fatigue refers to the symptom that reduces the ability of muscles to work overtime. It can be…

Q: Describe how training can increase the size andefficiency of both types of muscle fibers.

A: The musculoskeletal system of the human body is made of muscles and bone. Over 40% of the…

Q: How does speed of muscle action affect the following relationships; force-velocity and force-power?

A: Muscle action : There are three types of muscle contractions i.e. concentric, isometric and…

Q: Compare and contrast myofibrils and myofilaments.

A: Muscles are required in breathing, talking, running, walking, and anybody movement. Actin and…

Q: explain how the shortening velocity can be varied from very fast to very slow even though the load…

A: Muscle contraction will depend upon two types of velocity. The twitch and tetanic. The twitch refers…

Q: Describe the effect of increasing the load on a skeletal muscle fiberon the velocity of shortening?

A: A skeletal muscle is a type of muscle that remains attached to the skeletal system i.e. bones in the…

Q: If the muscle fiber is stretched to 150% of muscle length and thentechnically stimulated, what would…

A: Muscle contraction is shorting of length of muscle which  lead to locomotion and movement. Most…

Q: List the factors responsible for skeletal muscle fatigue?

A: Muscle fatigue Decline in muscle force generated over sustained periods of activity or due to…

Q: Based on the graph, describe the relationship (or lack thereof) between the maximum EMG activity and…

A: Electromyography (EMG) measures muscle response or electrical activity in response to a stimulation…

Q: Distinguish between concentric, isometric and eccentric contractions, the physiology of the…

A: Through the cycling of actin and myosin cross-bridges, a muscle fibre produces tension. The muscle…

Q: What

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Q: Discuss why slow oxidative fibers are more fatigueresistant than fast glycolytic fibers.

A: The muscular system works to control the movement of the body and inside organs. Muscle tissue…

Q: Identify the ways that increased IP3 can cause contraction.  Identify the ways that increased cAMP…

A: 1.  The contraction of the smooth muscle is generated due to the production of several…

Q: What are the physiological mechanisms of muscle fatigue?

A: Muscle fatigue generally occurs during intense exercise. It occurs due to the accumulation of lactic…

Q: Why is the increase in velocity inversely proportional to the sarcomere length?

A: A sarcomere is the basic contractile unit of muscle fiber. Each sarcomere is composed of two main…

Q: How do aerobic and resistance exercise differ in their effects on muscle size and function?

A: Aerobic exercises consume calories - full stop. High-impact preparing is a constant exercise that…