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当举重运动员猛地将超过体重几倍的杠铃举过头顶时,你一定很想知道这股神奇的力量来自何处。运动生理学家研究证明:力量的生理基础是肌肉的横断面,横断面积愈大,肌肉收缩时产生的力量愈大。任何人要想获得最大的力量,就必须使肌肉运动单位发生最大的紧张性变化,并动员更多的运动单位进行活动。系统的力量练习,如推举杠铃、哑铃,做俯卧撑等,能从形态上使肌肉体积增大,从能量方面使肌肉中的贮氧能力大大增加,以便为人体活动时肌肉的收缩,特别是憋气的一瞬间提供足够的氧气。运动生理学表明:平常不大活动的人,肌肉中只有40%～50%的肌肉纤维参加活动,
When a weightlifter jerks his barbell over his weight several times over his head, you’ll want to know where this magical power comes from. Exercise Physiologists have shown that: the physiological basis of strength is the cross-section of the muscle, the larger the cross-sectional area, the greater the muscle contraction produced. To get the most out of anyone’s power, muscle units must undergo the most stressful changes and mobilize more units to carry out their activities. The strength of the system exercises, such as pushing barbell, dumbbells, doing push-ups, etc., can make the muscle size from the morphological increase in energy from the muscle oxygen storage capacity greatly increased in order to human activity when the muscle contraction, especially suffocation For the moment to provide enough oxygen. Exercise physiology showed that: people who are not usually active, only 40% to 50% of muscle fibers in the muscles to participate in activities,