Preferred and energetically optimal gait transition speeds in human locomotion.
Preferred and energetically optimal gait transition speeds in human locomotion.
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人类运动中首选且能量最佳的步态转换速度。
DOI：
10.1249/00005768-199310000-00012
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发表时间：
1993
影响因子：
4.1
通讯作者：
A. Hreljac
中科院分区：
文献类型：
--
作者：
A. Hreljac
以前的研究人员普遍假设，人类运动过程中的步态转变是以最小化代谢能量消耗的速度发生的。这项调查的主要目的是通过直接测量来确定改变步态是否实际上是一种节能机制。实验的第二个目的是确定在优选的过渡速度（PTS）下行走或跑步时，通过感知注意力等级（RPE）测量的努力感是否更大。20名年轻健康的成年人（10名男性，10名女性）在跑步机上以5种速度行走，范围为他们单独测量的PTS的70-110%，并以5种速度跑步，范围为他们PTS的90-130%，同时监测VO 2以确定每个人的能量最佳过渡速度（EOTS）。尽管在本研究中发现的EOTS（2.24 m.s-1）显著大于PTS（2.06 m.s-1），但在PTS下行走时的RPE（13.5）显著大于在PTS下跑步时的RPE（10.0），这表明人类运动过程中的步态转换不会发生，以最大限度地减少代谢能量消耗。
A widespread assumption of previous researchers is that the gait transition during human locomotion takes place at speeds that minimize metabolic energy consumption. The primary purpose of this investigation was to determine, by direct measurements, whether changing gaits is actually an energy saving mechanism. The secondary purpose of the experiment was determine whether the sense of effort, as measured by a Rating of Perceived Exertion (RPE), was greater for walking or running at the preferred transition speed (PTS). Twenty young, healthy adults (10 males, 10 females) walked on a treadmill at five speeds ranging from 70-110% of their individually measured PTS, and ran at five speeds ranging from 90-130% of their PTS while VO2 was monitored to determine each individual's energetically optimal transition speed (EOTS). Although the EOTS found during this study (2.24 m.s-1) was significantly greater than the PTS (2.06 m.s-1), RPE was significantly greater while walking at the PTS (13.5) than running at the PTS (10.0), suggesting that the gait transition during human locomotion does not take place in order to minimize metabolic energy consumption.