Paré G, Noreau L, Simard C
Adapted Physical Activity Evaluation Laboratory, Centre François-Charon, Quebec City, Canada.
Paraplegia. 1993 Sep;31(9):584-92. doi: 10.1038/sc.1993.94.
The aim of the present study was to verify the basic principles underlying the prediction of VO2 peak from a submaximal exercise test performed by paraplegics on a wheelchair ergometer and thus to propose regression equations of VO2 peak prediction. Forty-six paraplegic subjects (mean age = 33.2 +/- 8.7 years) with a traumatic lesion (T1-L3) performed a graded exercise test on a wheelchair ergometer until exhaustion. The test started with an initial workload of 0 watts, with an increment of 6 watts per 2 minutes. Measurements included power output (W), heart rate (HR) and oxygen consumption (VO2) throughout the test. Linear relationships were observed between VO2 and W (VO2 = 0.79 + 0.02 W, r = 0.80, SEE = 0.22 l min-1) as well as between %VO2 max and % maximal heart rate (% VO2 max = 8.7 + 0.83 %HR, r = 0.83 SEE = 10.5%). Combination of the two equations for estimating VO2 peak led to a linear relationship between the estimated and measured VO2 peak. Nonetheless, the strength and accuracy of the prediction were low (r = 0.49, SEE = 0.29 l min-1). Participation in aerobic exercise, body mass and lean body mass, introduced as correction factors in the regression equation, significantly improved the strength and the accuracy of the prediction (r = 0.85, SEE = 0.29 l min-1).(ABSTRACT TRUNCATED AT 250 WORDS)
本研究的目的是验证截瘫患者在轮椅测力计上进行次极量运动试验预测最大摄氧量（VO2峰值）的基本原理，从而提出VO2峰值预测的回归方程。46名因创伤性损伤（T1-L3）导致截瘫的受试者（平均年龄=33.2±8.7岁）在轮椅测力计上进行分级运动试验直至力竭。试验从初始负荷0瓦开始，每2分钟增加6瓦。测量包括整个试验过程中的功率输出（W）、心率（HR）和耗氧量（VO2）。观察到VO2与W之间存在线性关系（VO2 = 0.79 + 0.02W，r = 0.80，标准误=0.22 l min-1），以及最大摄氧量百分比与最大心率百分比之间存在线性关系（最大摄氧量百分比 = 8.7 + 0.83心率百分比，r = 0.83，标准误 = 10.5%）。将两个估计VO2峰值的方程相结合，得到了估计的VO2峰值与测量的VO2峰值之间的线性关系。尽管如此，预测的强度和准确性较低（r = 0.49，标准误 = 0.29 l min-1）。将有氧运动参与度、体重和去脂体重作为回归方程中的校正因子引入后，显著提高了预测的强度和准确性（r = 0.85，标准误 = 0.29 l min-1）。（摘要截断于250字）
