Berry M J, Storsteen J A, Woodard C M
Department of Health and Sport Science, Wake Forest University, Winston-Salem, NC 27109.
Med Sci Sports Exerc. 1993 Sep;25(9):1031-7.
Oxygen uptake (VO2) and exercise efficiency during cycle ergometer exercise are considered to be independent of body mass. To determine the validity of this assumption, 50 females ranging in body mass from 41.5-98.9 kg exercised on a cycle ergometer with no load at 60 rpm and at 25, 50, 75, and 100 W at 60 and 90 rpm. Gross VO2 and efficiency, net VO2 and efficiency, work VO2 and efficiency, and delta efficiency were computed. Gross and net VO2 were significantly and positively correlated with body mass at all work rates and pedal frequencies. Gross efficiency was significantly and negatively correlated with body mass at all work rates and pedal frequencies. Work VO2 and body mass were not significantly correlated. The correlations between work and delta efficiency and body mass were not significant. Since body mass was found to be significantly correlated with gross VO2, the following equation was developed using stepwise multiple regression to predict gross VO2: VO2 (ml.min-1) = 10.9 (work rate, W) + 8.2 (pedal rate, rpm) + 8.3 (body mass, kg) - 559.6. These data suggest that body mass should be considered when estimating the oxygen uptake during cycle ergometer exercise.
在蹬车测力计运动期间，摄氧量（VO₂）和运动效率被认为与体重无关。为了确定这一假设的有效性，50名体重在41.5至98.9千克之间的女性在蹬车测力计上进行运动，无负荷时以60转/分钟的速度，以及在60和90转/分钟时分别以25、50、75和100瓦的功率进行运动。计算了总VO₂和效率、净VO₂和效率、工作VO₂和效率以及效率差值。在所有工作强度和踏板频率下，总VO₂和净VO₂均与体重呈显著正相关。在所有工作强度和踏板频率下，总效率与体重呈显著负相关。工作VO₂与体重无显著相关性。工作与效率差值和体重之间的相关性不显著。由于发现体重与总VO₂显著相关，因此使用逐步多元回归建立了以下方程来预测总VO₂：VO₂（毫升·分钟⁻¹）=10.9（工作强度，瓦）+8.2（踏板频率，转/分钟）+8.3（体重，千克）-559.6。这些数据表明，在估计蹬车测力计运动期间的摄氧量时应考虑体重。
