MUSCLE PHYSIOLOGY

Detailed explanation-1: -Isometric contraction occurs when muscle length remains relatively constant as tension is produced. For example, during a biceps curl, holding the dumbbell in a constant/static position rather than actively raising or lowering it is an example of isometric contraction.

Detailed explanation-2: -Isometric contraction: A muscle contracts, but the joint it controls does not move. Think of holding a weight with your elbow bent to 90 degrees and does not move. Isotonic contraction: A muscle contracts and the joint angle it controls increases and decreases while the muscle either shortens or lengthens.

Detailed explanation-3: -In an isometric muscle contraction, the muscle fires (or activates with a force and tension) but there is no movement at a joint. In other words, the joint is static; there is no lengthening or shortening of the muscle fibers and the limbs don’t move.