What is a contraction in which the muscle shortens and work is done?
A contraction in which the muscle shortens and work is done is referred to as a concentric contraction. This type of muscle contraction usually produces a force that is large enough to overcome the resistance of the load.
A muscle fiber generates tension when properly stimulated, for instance by the nervous system or by electrical impulses. This physiological process is called muscle contraction. While under tension,...