Lindstedt S L, Hoppeler H, Bard K M, Thronson H A
Am J Physiol. 1985 Dec;249(6 Pt 2):R699-703. doi: 10.1152/ajpregu.1985.249.6.R699.
All skeletal muscle can produce roughly the same maximal cross-sectional force; however, the power (energy X time-1) required to develop and maintain that force increases with increasing contraction velocity. Thus the rate of muscle tension development may be of primary importance in setting the energy demand of contracting muscle. We have estimated the rate of muscle shortening during terrestrial locomotion in mammals as a function of body mass. The rate of muscle shortening of the knee extensors is much faster in small than large mammals, scaling in proportion to the -0.23 power of mass. This exponent suggests a constant body size-independent relation among skeletal muscle: O2 consumption, mitochondria content, myosin ATPase activity, and in vivo shortening velocity.
所有骨骼肌产生的最大横截面积力大致相同；然而，产生并维持该力所需的功率（能量×时间⁻¹）会随着收缩速度的增加而增加。因此，肌肉张力发展的速率可能在决定收缩肌肉的能量需求方面至关重要。我们已经估算了哺乳动物在陆地运动过程中肌肉缩短的速率与体重的关系。小型哺乳动物膝关节伸肌的肌肉缩短速率比大型哺乳动物快得多，与体重的-0.23次幂成比例缩放。该指数表明骨骼肌、氧气消耗、线粒体含量、肌球蛋白ATP酶活性和体内缩短速度之间存在与身体大小无关的恒定关系。
