Francis K, Brasher J
Division of Physical Therapy, University of Alabama, Birmingham.
J Sports Med Phys Fitness. 1992 Sep;32(3):282-7.
A suitable testing device that is generally favored for estimating maximal oxygen consumption (VO2max) under field conditions or in environments where testing equipment is limited is the step test. Recently a mathematical model was reported to standardize the height of stepping for individuals of various heights. The purpose of this study was to validate this model in males. Thirty-three men aged 18 to 47 (x = 28) performed each of three rate-specific step tests and a Bruce treadmill test. Direct measurements of VO2max obtained from the treadmill test were correlated with a 15 second recovery heart rates after three different step tests were performed at stepping frequencies of 22, 26 and 30 ascents/minute. The correlation coefficients for prediction of VO2max from the recovery heart rate and directly measured oxygen consumption were 0.77 at 22 and 0.81 at 26 and 30 ascents/minute. Each relationship was statistically significant at the p < 0.01 level. It can be concluded that the single-stage height adjusted step test provides an effective predictor of VO2max in males and can be used when more complex methods of clinical testing are unavailable or not feasible.
在野外条件下或测试设备有限的环境中，用于估计最大摄氧量（VO2max）的一种普遍受到青睐的合适测试设备是台阶试验。最近有报道称有一个数学模型可将不同身高个体的台阶高度标准化。本研究的目的是在男性中验证该模型。33名年龄在18至47岁（平均年龄x = 28岁）的男性进行了三种特定速率的台阶试验和一次布鲁斯跑步机试验。在以每分钟22次、26次和30次的踏频进行三种不同的台阶试验后，从跑步机试验中直接测得的VO2max与15秒恢复期心率相关。根据恢复期心率预测VO2max与直接测量的耗氧量之间的相关系数，在每分钟22次踏频时为0.77，在每分钟26次和30次踏频时为0.81。每种关系在p < 0.01水平上均具有统计学意义。可以得出结论，单级高度调整台阶试验可有效预测男性的VO2max，并且在无法使用或不可行更复杂的临床测试方法时可以使用。
