Scaling of elastic energy storage in mammalian limb tendons: do small mammals really lose out?
Scaling of elastic energy storage in mammalian limb tendons: do small mammals really lose out?
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DOI：
10.1098/rsbl.2004.0243
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发表时间：
2005-03-01
期刊：
影响因子：
3.3
通讯作者：
Burn, JF
中科院分区：
文献类型：
--
作者：
Bullimore, SR;Burn, JF
人们普遍认为，弹性储能在大型哺乳动物的运动中更为重要。这是基于：（a）比较袋鼠和较小的袋鼠鼠;（B）计算结果表明，相对于体重，弹性能量储存能力随着体型的增大而增大。在这里，我们认为：（i）来自袋鼠和袋鼠大鼠的数据不能推广到其他哺乳动物;（ii）相对于体重的弹性能量储存能力并不表明弹性能量对动物的重要性;以及（iii）弹性能对运动的机械功的贡献不会像质量比能量存储容量那样随着尺寸快速增加，因为较大的哺乳动物每一步必须做相对更多的机械功。我们预测如何在四足哺乳动物的弹性能量存储的比例，机械工作将改变与大小相结合的经验尺度关系从文献中。结果表明，弹性能的百分比贡献的机械功的运动随着尺寸的减小，所以弹性能是更重要的小型哺乳动物的运动。这一点现在需要通过实验来检验。
It is widely believed that elastic energy storage is more important in the locomotion of larger mammals. This is based on: (a) comparison of kangaroos with the smaller kangaroo rat; and (b) calculations that predict that the capacity for elastic energy storage relative to body mass increases with size. Here we argue that: (i) data from kangaroos and kangaroo rats cannot be generalized to other mammals; (ii) the elastic energy storage capacity relative to body mass is not indicative of the importance of elastic energy to an animal; and (iii) the contribution of elastic energy to the mechanical work of locomotion will not increase as rapidly with size as the mass-specific energy storage capacity, because larger mammals must do relatively more mechanical work per stride. We predict how the ratio of elastic energy storage to mechanical work will change with size in quadrupedal mammals by combining empirical scaling relationships from the literature. The results suggest that the percentage contribution of elastic energy to the mechanical work of locomotion decreases with size, so that elastic energy is more important in the locomotion of smaller mammals. This now needs to be tested experimentally.