能否根据跑步的动能来确定跑步状态的转换以及跑步的代谢成本？

Can the transitions to and from running and the metabolic cost of running be determined from the kinetic energy of running?

作者信息

Turvey M T, Holt K G, Lafiandra M E, Fonseca S T

机构信息

Center for the Ecological Study of Perception and Action, University of Connecticut.

出版信息

J Mot Behav. 1999 Sep;31(3):265-78. doi: 10.1080/00222899909600993.

DOI:10.1080/00222899909600993

PMID:20037043

Abstract

An experiment was conducted in which volume of used oxygen per stride time and the total segmental changes in kinetic energy generated per stride time, DeltaEk s-1, of 11 participants were determined on Day 1 for 7 treadmill running speeds. Gait transition speeds were determined on Day 2. Running metabolism and transition speed were predicted from the Day 1 mechanics of running expressed in Speed x DeltaEk s-1 coordinates. Predictions followed from the relation between 2 generalized quality ratios Qmetab, and Qmech, with numerator DeltaEk s-1. In Qmetab, the denominator was the volume of used oxygen per stride time; in Qmech, the denominator was the absolute regression constant from the linear dependency of DeltaEk s-1 on speed.

摘要

进行了一项实验，在第一天测定了11名参与者在7种跑步机跑步速度下每步时间内使用的氧气量以及每步时间内产生的动能总节段变化量（DeltaEk s-1）。在第二天确定了步态转换速度。根据第一天在速度×DeltaEk s-1坐标中表示的跑步力学来预测跑步代谢和转换速度。预测基于两个广义质量比Qmetab和Qmech之间的关系，分子为DeltaEk s-1。在Qmetab中，分母是每步时间内使用的氧气量；在Qmech中，分母是DeltaEk s-1对速度的线性依赖关系中的绝对回归常数。