<span>A muscle contraction that results in no movement of the body is referred to as an isotonic contraction. The isotonic contraction can be </span>concentric and eccentric. C<span>oncentric </span>contraction results in the muscle shortening, because the force the muscle is producing is greater than the resistance. Eccentric isotonic contraction on the other hand results in muscle lengthening because<span> the resistance is being greater than the force the muscle is producing.</span>