MUSCLE PHYSIOLOGY

Detailed explanation-1: -Concentric Contractions A concentric contraction is a type of muscle contraction in which the muscles shorten while generating force, overcoming resistance. For example, when lifting a heavy weight, a concentric contraction of the biceps would cause the arm to bend at the elbow, lifting the weight towards the shoulder.

Detailed explanation-2: -Isokinetic contractions are those in which there is a consistent rate of speed. Isotonic contractions are those in which there is consistent tension as the muscle length changes. These can be either concentric (muscle shortening) or eccentric (muscle elongation).

Detailed explanation-3: -Concentric contraction refers to when the force of contraction exceeds the force of resistance, which results in muscle shortening and approximation of muscle origin and insertion. Eccentric contraction occurs when the force of contraction is less than the force of resistance.

Detailed explanation-4: -An isometric contraction generates force without changing the length of the muscle, and no mechanical work is done since the muscle does not shorten. However, this type of contraction requires high amounts of energy because of the force generated by the muscle.