MUSCLE PHYSIOLOGY

Detailed explanation-1: -An eccentric (lengthening) muscle contraction occurs when a force applied to the muscle exceeds the momentary force produced by the muscle itself, resulting in the forced lengthening of the muscle-tendon system while contracting (Lindstedt et al., 2001).

Detailed explanation-2: -eccentric: An isotonic contraction where the muscle lengthens.

Detailed explanation-3: -Isotonic contractions occur when the muscle changes length, producing limb motion. Concentric contractions occur when the muscle shortens. Eccentric contractions occur when the muscle lengthens. More fast-twitch fibers are recruited during eccentric contractions.

Detailed explanation-4: -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.