对不同项目的１１６名运动员在不同的训练阶段进行了上、下阶梯的试验，利用经过验证的数学公式和数理统计的方法，由阶梯试验取得的数值计算出定量负荷下心率在１７０次时的功率，即ＰＷＣ１７０，并以此推算出最大吸氧量和计算恢复指数 A total of 116 athletes from different disciplines were tested on the upper and lower stairs in different training phases. Based on the mathematical formulas and mathematical statistics verified, the numerical results from the step test calculated the heart rate under the quantitative load at 170 times Power, PWC170, and calculate the maximum oxygen uptake and calculate the recovery index