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首页> 外文期刊>Research quarterly for exercise and sport >Within- and between-day repeatability and variability in children's physiological responses during submaximal treadmill exercise.
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Within- and between-day repeatability and variability in children's physiological responses during submaximal treadmill exercise.

机译：次最大跑步机运动期间儿童生理反应的日间和日间重复性和变异性。

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The purpose of this study was to verify within- and between-day repeatability and variability in children's oxygen uptake (VO2), gross economy (GE; VO2 divided by speed) and heart rate (HR) during treadmill walking based on self-selected speed (SS). Fourteen children (10.1 +/- 1.4 years) undertook three testing sessions over 2 days in which four walking speeds, including SS were tested. Within- and between-day repeatability were assessed using the Bland and Altman method, and coefficients of variability (CV) were determined for each child across exercise bouts and averaged to obtain a mean group CV value for VO2, GE, and HR per speed. Repeated measures analysis of variance showed no statistically significant differences in within- or between-day CV for VO2, GE, or HR at any speed. Repeatability within- and between-day for VO2, GE, and HR for all speeds was verified. These results suggest that submaximal VO2 during treadmill walking is stable and reproducible at a range of speeds based on children's SS.
机译：这项研究的目的是根据自行选择的速度来验证跑步机行走过程中儿童的摄氧量（VO2），总经济性（GE; VO2除以速度）和心率（HR）的日内和日间重复性和变异性（SS）。 14名儿童（10.1 +/- 1.4岁）在2天内进行了3次测试，测试了包括SS在内的4种步行速度。使用Bland和Altman方法评估日内和日间重复性，并确定每个运动周期内每个孩子的变异系数（CV），并取其平均值，以得出每速度VO2，GE和HR的平均CV值。重复测量方差分析显示，无论以何种速度，VO2，GE或HR的日内或日间CV均无统计学上的显着差异。验证了所有速度下VO2，GE和HR的日间和日间重复性。这些结果表明，在跑步机行走过程中，基于儿童的SS，在一定的速度范围内，VO2的最大值是稳定且可重现的。

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