MUSCLE PHYSIOLOGY

Detailed explanation-1: -An isometric contraction is a muscle contraction without motion. Isometric contractions are used to stabilize a joint, such as when a weight is held at waist level neither raising nor lowering it. Dynamic contractions are muscle contractions with a fixed amount of weight.

Detailed explanation-2: -An isometric exercise is a form of exercise involving the static contraction of a muscle without any visible movement in the angle of the joint.

Detailed explanation-3: -In summary, the two forms of isometric muscle action represents a position task (HIMA) that requires position control and a force task (PIMA) that requires the control of force.