Human Performance Laboratory, Room 212, Patrick Gymnasium University of Vermont Burlington , USA.
J Sports Sci Med. 2003 Jun 1;2(2):47-51. eCollection 2003 Jun.
ATP repletion following exhaustive exercise is approximated to be 90-95% complete in 3 minutes, and is crucial in the performance of short duration, high intensity work. Few studies appear to have used this 3-minute interval in the investigation of recovery modes, blood lactate accumulation and power output. Thus, our aim was to investigate changes in peak power (PP), average power (AP) and blood lactate during repeated bouts of high intensity, short duration cycling, comprising active and passive recovery modes lasting 3 minutes. Seven male cyclists (age 21.8±3.3 yrs, mass 73.0±3.8kgs, height 177.3±3.4cm) performed both an active (3 min at 80rpm & 1kg resistance) and a passive recovery (no work between bouts) protocol. Following a warm-up, subjects performed six 15-second maximal sprints against a fixed workload of 5.5kg. Mean PP across the six trials was 775±11.2Watts (W) and 772±33.4W for active and passive protocols respectively; whereas mean AP was 671±26.4W and 664±10.0W, respectively. Neither was significantly different. There was a significant difference within trials for both peak power and average power (p<0.05), with both values decreasing over time. However, the decrease was significantly smaller for both PP and AP values during the active recovery protocol (p<0.05). In the current study, variation in power output cannot be explained by lactate values, as values did not differ between the active and passive protocol (p=0.37). Lactate values did differ significantly between trials within protocols (p<0.05). The results of this study suggest that an active recovery of 3 minutes between high intensity, short duration exercise bouts significantly increases PP and AP compared to a passive recovery, irrespective of changes in blood lactate levels.
在剧烈运动后，三磷酸腺苷（ATP）的补充大约 90-95%在 3 分钟内完成，这对于短时间、高强度工作的表现至关重要。很少有研究在恢复模式、血乳酸积累和功率输出的研究中使用这个 3 分钟的间隔。因此，我们的目的是研究在高强度、短时间的自行车重复冲刺中，峰值功率（PP）、平均功率（AP）和血乳酸的变化，包括持续 3 分钟的主动和被动恢复模式。7 名男性自行车运动员（年龄 21.8±3.3 岁，体重 73.0±3.8 公斤，身高 177.3±3.4 厘米）分别进行了主动（80rpm 和 1kg 阻力下 3 分钟）和被动（两次冲刺之间不工作）恢复模式。热身结束后，受试者进行了 6 次 15 秒最大冲刺，对抗固定的 5.5kg 工作量。六次试验的平均 PP 分别为 775±11.2 瓦特（W）和 772±33.4W，而平均 AP 分别为 671±26.4W 和 664±10.0W，均无显著差异。两次试验的峰值功率和平均功率均有显著差异（p<0.05），随着时间的推移，两者均呈下降趋势。然而，在主动恢复方案中，PP 和 AP 的值下降幅度明显较小（p<0.05）。在当前研究中，由于乳酸值在主动和被动方案之间没有差异（p=0.37），因此功率输出的变化不能用乳酸值来解释。在方案内的不同试验中，乳酸值有显著差异（p<0.05）。本研究结果表明，高强度、短时间运动之间的 3 分钟主动恢复与被动恢复相比，显著增加了 PP 和 AP，而与血乳酸水平的变化无关。
