Okura T, Tanaka K
Department of Epidemiology, National Institute for Longevity Sciences (NILS), University of Tsukuba.
J Physiol Anthropol Appl Human Sci. 2001 Sep;20(5):255-61. doi: 10.2114/jpa.20.255.
The purpose of this study was to develop a simple and convenient indirect method for estimating maximal oxygen uptake (VO2max) and oxygen uptake at the anaerobic threshold (VO2AT) by using workrate and a rating of perceived exertion (RPE) during a submaximal graded cycling test (GCTsubmax). One hundred and fifty-four healthy Japanese men, aged 20 to 64 years, volunteered to participate in the study. The subjects were randomly divided into two groups, a validation (V) group (n = 100) and a cross-validation (CV) group (n = 54). The V and CV groups performed a maximal cycling test and the GCTsubmax. The GCTsubmax was conducted with documentation of three categories (overall, chest, legs) of RPE, up to a rating of 15. Prediction equations of VO2max and VO2AT were developed by multiple regression analysis using data of the V group. The mean VO2max and VO2AT of the V group were 2462 +/- 484 ml.min-1 and 1349 +/- 334 ml.min-1, respectively. Correlational analyses indicated that the workrate (W) at which the legs RPE (RPElegs) reached 15 or higher was evaluated first (WRPE legs 15) together with WRPE legs 14 both yielded the highest correlation coefficients (r) with VO2max (r = 0.781) and V O2AT (r = 0.790), respectively. The developed prediction equations of VO2max and VO2AT were VO2max (ml.min-1) = 1.19 WRPE legs 15 (kgm.min-1) - 15.84 age (yr) + 13.06 weight (kg) + 1365 (R = 0.849, SEE = 261 ml.min-1) VO2AT (ml.min-1) = 1.34 WRPE legs 14 (kgm.min-1) - 5.49 age (yr) + 665 (R = 0.816, SEE = 195 ml.min-1) Results of a cross-validation analysis indicated a similar estimation (r = 0.793 and 0.853, and SEE = 240 ml.min-1 and 183 ml.min-1) compared with the above equations developed from data of the V group. Reliability coefficients of V O2max (r = 0.891) and VO2AT (r = 0.870) respectively were significant and there was no difference in the mean value between trials 1 and 2. The "RPE method" developed for estimating cardiorespiratory fitness is not only a unique indirect method but also a valid and useful tool in various settings of exercise prescription.
本研究的目的是开发一种简单便捷的间接方法，通过在次极量递增式骑行测试（GCTsubmax）中使用功率和主观用力程度（RPE）评分来估算最大摄氧量（VO2max）和无氧阈摄氧量（VO2AT）。154名年龄在20至64岁之间的健康日本男性自愿参与本研究。受试者被随机分为两组，即验证（V）组（n = 100）和交叉验证（CV）组（n = 54）。V组和CV组均进行了最大骑行测试和GCTsubmax。GCTsubmax进行时记录了RPE的三个类别（整体、胸部、腿部），最高评分为15分。使用V组的数据通过多元回归分析得出了VO2max和VO2AT的预测方程。V组的平均VO2max和VO2AT分别为2462±484 ml·min-1和1349±334 ml·min-1。相关性分析表明，腿部RPE（RPElegs）达到15或更高时的功率（W）（WRPE legs 15）以及WRPE legs 14与VO2max（r = 0.781）和VO2AT（r = 0.790）的相关系数最高。所建立的VO2max和VO2AT预测方程分别为：VO2max（ml·min-1）= 1.19×WRPE legs 15（kgm·min-1）- 15.84×年龄（岁）+ 13.06×体重（kg）+ 1365（R = 0.849，SEE = 261 ml·min-1）；VO2AT（ml·min-1）= 1.34×WRPE legs 14（kgm·min-1）- 5.49×年龄（岁）+ 665（R = 0.816，SEE = 195 ml·min-1）。交叉验证分析结果表明，与根据V组数据建立的上述方程相比，估算结果相似（r = 0.793和0.853，SEE = 240 ml·min-1和183 ml·min-1）。VO2max（r = 0.891）和VO2AT（r = 0.870）的可靠性系数分别显著，且第1次和第2次测试的平均值无差异。所开发用于估算心肺适能的“RPE方法”不仅是一种独特的间接方法，而且在各种运动处方设置中都是一种有效且有用的工具。
