BPK 143 Chapter Notes -Motor Unit, Osteoporosis, Myocyte
13 Oct 2011
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Isotonic: advantages, will increase power, natural movements we use everyday, will improve athleticism. One motor unit has a nerve that controls a given number of muscle fibers. Firing more motor units will result in more force exerted. Firing all motor units in a muscle is exerting maximal force. Isokinetic strength makes sure the muscle is fully exercised throughout the entire range of motion so the muscle gets stronger at every position in it"s range of motion. However, his muscle cross-sectional area has barely increased. Give a physiological explanation for his strength increase: neurologically the muscle is learning to fire more muscle fibers so the. 15% increase is strength is due to neurological learning of the muscle rather than muscle growth: compare the muscular strength of males versus females. Why is the average male stronger than the average female: male bodies contain more muscle mass while females contain more fat. Explain: type ii fast twitch muscle fibres.
