Dupont Grégory, Moalla Wassim, Guinhouya Comlavi, Ahmaidi Saïd, Berthoin Serge
Laboratory of Human Movement Studies, Faculty of Sports Sciences and Physical Education, 9 Rue de L'Université, Lille 2 University, 59790 Ronchin, France.
Med Sci Sports Exerc. 2004 Feb;36(2):302-8. doi: 10.1249/01.MSS.0000113477.11431.59.
To compare the effects of passive versus active recovery on muscle oxygenation and on the time to exhaustion for high-intensity intermittent exercises.
Twelve male subjects performed a graded test and two intermittent exercises to exhaustion. The intermittent exercises (15 s) were alternated with recovery periods (15 s), which were either passive or active recovery at 40% of .VO2max. Oxyhemoglobin was evaluated by near-infrared spectroscopy during the two intermittent exercises.
Time to exhaustion for intermittent exercise alternated with passive recovery (962 +/- 314 s) was significantly longer (P < 0.001) than with active recovery (427 +/- 118 s). The mean metabolic power during intermittent exercise alternated with passive recovery (48.9 +/- 4.9 mL.kg-1.min-1) was significantly lower (P < 0.001) than during intermittent exercise alternated with active recovery (52.6 +/- 4.6 mL.kg-1.min-1). The mean rate of decrease in oxyhemoglobin during intermittent exercises alternated with passive recovery (2.9 +/- 2.4%.s-1) was significantly slower (P < 0.001) than during intermittent exercises alternated with active recovery (7.8 +/- 3.4%.s-1), and both were negatively correlated with the times to exhaustion (r = 0.67, P < 0.05 and r = 0.81, P < 0.05, respectively).
The longer time to exhaustion for intermittent exercise alternated with passive recovery could be linked to lower metabolic power. As intermittent exercise alternated with passive recovery is characterized by a slower decline in oxyhemoglobin than during intermittent exercise alternated with active recovery at 40% of .VO2max, it may also allow a higher reoxygenation of myoglobin and a higher phosphorylcreatine resynthesis, and thus contribute to a longer time to exhaustion.
比较被动恢复与主动恢复对高强度间歇运动中肌肉氧合作用及疲劳时间的影响。
12名男性受试者进行了一次分级测试和两次直至疲劳的间歇运动。间歇运动（15秒）与恢复期（15秒）交替进行，恢复期为被动恢复或在最大摄氧量的40%时进行主动恢复。在两次间歇运动期间，通过近红外光谱法评估氧合血红蛋白。
与主动恢复（427±118秒）相比，被动恢复交替进行的间歇运动的疲劳时间（962±314秒）显著更长（P<0.001）。被动恢复交替进行的间歇运动期间的平均代谢功率（48.9±4.9毫升·千克⁻¹·分钟⁻¹）显著低于主动恢复交替进行的间歇运动期间的平均代谢功率（52.6±4.6毫升·千克⁻¹·分钟⁻¹）（P<0.001）。被动恢复交替进行的间歇运动期间氧合血红蛋白的平均下降速率（2.9±2.4%·秒⁻¹）显著慢于主动恢复交替进行的间歇运动期间（7.8±3.4%·秒⁻¹）（P<0.001），且两者均与疲劳时间呈负相关（分别为r = 0.67，P<0.05和r = 0.81，P<0.05）。
被动恢复交替进行的间歇运动疲劳时间更长可能与较低的代谢功率有关。由于被动恢复交替进行的间歇运动的特点是氧合血红蛋白的下降比在最大摄氧量的40%时主动恢复交替进行的间歇运动更慢，它还可能使肌红蛋白有更高的再氧合作用和更高的磷酸肌酸再合成，从而有助于延长疲劳时间。
