The physical condition of a muscle is determined by its freedom from fatigue, its temperature, its stores of energy foodstuffs, its state of training and its ability to recover from bouts of work. Fatigue reduces the excitability, power and extent of contraction of muscle. Unless the stimulus is great fatigue reduces the number of fibers which respond in repeated muscular contractions. Such reduction in the number of contractile elements reduces the power of the contractions.
Tag: strong muscles
Application of Muscular Force
The mechanical action of the levers employed determines the power which the muscle must exert to perform the work. Two factors influence the amount of power which a muscle can supply to its lever: variation in the strength of the pull resulting from different degrees of stretch of the working muscles and)the mechanical advantage of the lever. The position of a muscle at contraction affects the strength of the pull of the muscle.