Thirteen healthy male subjects (age 28 ± 7 years) performed tests for critical power and W′ determination and two square-wave high-intensity exercises until exhaustion either with prior very-heavy intensity cycling (EXP) or without (CON). Prior exercise bout induced a depletion of 60 % of W′. After 10 min of recovery, W′ reconstitution was not fully achieved (∼ 92 %). Time to exhaustion and Δ blood lactate concentration were significantly lower in EXP compared to CON (595 ± 118 s vs. 683 ± 148 s; 3.5 ± 1.2 mmol.L⁻¹ vs. 8.8 ± 2.3 mmol.L⁻¹; p < 0.05, respectively). Oxygen uptake (VO₂) and heart rate were significantly higher in EXP, during the first 150 s of exercise (p < 0.05). The carbon dioxide production kinetics was significantly slower in EXP (mean response time = 87.8 ± 17.8 s vs. 73.7 ± 16.6 s in CON; p < 0.05). Thus, prior exercise impairs high-intensity cycling performance which can partly be explained by physiological disturbances linked to W′ depletion.

13 名健康男性受试者（年龄 28 ± 7 岁）进行了临界功率和W'测定以及两次方波高强度运动的测试，直至精疲力竭，无论是之前进行过非常重强度自行车 (EXP) 还是不进行 (CON)。之前的运动会导致W '消耗 60% 。恢复 10 分钟后，未完全实现W'重构（~ 92%）。与 CON 相比，EXP 中的疲劳时间和 Δ 血乳酸浓度显着较低（595 ± 118 s 对 683 ± 148 s；3.5 ± 1.2 mmol.L ^-1对 8.8 ± 2.3 mmol.L ^-1；p < 0.05 ， 分别）。摄氧量 (VO ₂在运动的前 150 秒内，EXP 中的 ) 和心率显着更高 (p < 0.05)。EXP 中的二氧化碳生产动力学显着变慢（平均响应时间 = 87.8 ± 17.8 s，而CON 中为73.7 ± 16.6 s；p < 0.05）。因此，先前的运动会损害高强度骑自行车的表现，这部分可以通过与W'消耗相关的生理干扰来解释。