MUSCLE PHYSIOLOGY

Detailed explanation-1: -There are 2 types of isotonic contractions: concentric and eccentric. In a concentric contraction, the muscle tension rises to meet the resistance then remains stable as the muscle shortens. During eccentric contraction, the muscle lengthens as the resistance becomes greater than the force the muscle is producing.

Detailed explanation-2: -Eccentric exercises are exactly that; they are slow, lengthening muscle contractions that are for a specific muscle. For example, if you imagine slowly lowering yourself down to sit into a chair, the slow motion of you going from a standing position to sitting is an eccentric contraction, or “negative”.

Detailed explanation-3: -An eccentric contraction results in the elongation of a muscle while the muscle is still generating force; in effect, resistance is greater than force generated. Eccentric contractions can be both voluntary and involuntary.