Waddoups Lindsey, Wagner Dale, Fallon Jennifer, Heath Edward
Health, Physical Education and Recreation, Utah State University, 7000 Old Main Hill, Logan, UT 84322, USA.
J Sports Sci. 2008 Mar;26(5):491-7. doi: 10.1080/02640410701591425.
The single-stage treadmill walking test of Ebbeling et al. is commonly used to predict maximal oxygen consumption (.VO(2max)) from a submaximal effort between 50% and 70% of the participant's age-predicted maximum heart rate. The purpose of this study was to determine if this submaximal test correctly predicts .VO(2max) at the low (50% of maximum heart rate) and high (70% of maximum heart rate) ends of the specified heart rate range for males and females aged 18 - 55 years. Each of the 34 participants completed one low-intensity and one high-intensity trial. The two trials resulted in significantly different estimates of .VO(2max) (low-intensity trial: mean 40.5 ml . kg(-1) . min(-1), s = 9.3; high-intensity trial: 47.5 ml . kg(-1) . min(-1), s = 8.8; P < 0.01). A subset of 22 participants concluded their second trial with a .VO(2max) test (mean 47.9 ml . kg(-1) . min(-1), s = 8.9). The low-intensity trial underestimated (mean difference = -3.5 ml . kg(-1) . min(-1); 95% CI = -6.4 to -0.6 ml . kg(-1) . min(-1); P = 0.02) and the high-intensity trial overestimated (mean difference = 3.5 ml . kg(-1) . min(-1); 95% CI = 1.1 to 6.0 ml . kg(-1) . min(-1); P = 0.01) the measured .VO(2max). The predictive validity of Ebbeling and colleagues' single-stage submaximal treadmill walking test is diminished when performed at the extremes of the specified heart rate range.
埃贝林等人的单阶段跑步机步行测试通常用于根据参与者年龄预测最大心率的50%至70%之间的次最大运动强度来预测最大摄氧量（.VO(2max)）。本研究的目的是确定该次最大测试能否正确预测18至55岁男性和女性在指定心率范围的低（最大心率的50%）、高（最大心率的70%）两端的.VO(2max)。34名参与者每人都完成了一次低强度和一次高强度试验。这两次试验得出的.VO(2max)估计值有显著差异（低强度试验：平均值40.5毫升·千克(-1)·分钟(-1)，标准差 = 9.3；高强度试验：47.5毫升·千克(-1)·分钟(-1)，标准差 = 8.8；P < 0.01）。22名参与者的一个子集在第二次试验结束时进行了.VO(2max)测试（平均值47.9毫升·千克(-1)·分钟(-1)，标准差 = 8.9）。低强度试验低估了（平均差异 = -3.5毫升·千克(-1)·分钟(-1)；95%置信区间 = -6.4至-0.6毫升·千克(-1)·分钟(-1)；P = 0.02），高强度试验高估了（平均差异 = 3.5毫升·千克(-1)·分钟(-1)；95%置信区间 = 1.1至6.0毫升·千克(-1)·分钟(-1)；P = 0.01）测量的.VO(2max)。当在指定心率范围的极端情况下进行时，埃贝林及其同事的单阶段次最大跑步机步行测试的预测效度会降低。
