MUSCLE PHYSIOLOGY

Detailed explanation-1: -Concentric contraction involves shortening of the muscle with requisite movement of the origin or insertion and limb translation. Athletes use concentric contractions to counter a load. They are used to accelerate the distal segment of the limb and attached equipment, such as a racquet or ball.

Detailed explanation-2: -The physiological concept of muscle contraction is based on two variables: length and tension. In physiology, muscle shortening and muscle contraction are not synonymous, as tension within the muscle can be produced without changes in the length of the muscle.

Detailed explanation-3: -Concentric muscle contractions (shortening contractions) are typically used to generate motion, whereas eccentric muscle contractions (lengthening contractions) are used for resisting or slowing motion, and isometric contractions are used for producing shock absorption and maintaining stability.