The impact of rest duration on work intensity and RPE during interval training
The impact of rest duration on work intensity and RPE during interval training
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DOI：
10.1249/01.mss.0000177560.18014.d8
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发表时间：
2005-09-01
期刊：
影响因子：
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通讯作者：
Hetlelid, KJ
中科院分区：
文献类型：
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作者：
Seiler, S;Hetlelid, KJ
目的：探讨在标准化的高强度间歇训练处方中，休息时间对自选强度、生理反应和RPE的影响。受试者：9名训练有素的男性跑步者(VO2max 71 +/- 4 mL(.)kg（-1.)min(-1)）在恒定5%倾斜度的跑步机上进行3次间歇训练。每组进行6次4分钟的工作，分别为1分钟、2分钟或4分钟的恢复时间。每次训练都被规定为“高强度”训练，目标是在训练间隔内达到最高的平均跑步速度。受试者根据这些指示调节自己的工作和休息强度。在第四次间歇训练中，受试者根据固定强度自行选择恢复时间。结果：当休息时间从1分钟增加到2分钟时，跑步速度略有增加(14.7 +/- 0.7 vs 14.4 +/- 0.8 km(.)h(-1), P = 0.02)，但休息时间为4分钟时，跑步速度没有进一步增加(14.7 +/- 0.6 km（.)h(-1)）。与1和4分钟相比，2分钟休息时工作VO2略高(66.2 +/- 4.2 vs 65.1 +/- 4.2和64.9 +/- 4.7 mL(.)kg（-1.)min(-1), P < 0.05）。血乳酸峰值相似（分别为6.2 +/- 2.6、6.8 +/- 2.9、6.2 +/- 2.6 mmol）。L(-1))，而休息4 min时RPE峰值略低（17.1 +/- 1.3,17.7 +/- 1.5,16.8 +/- 1.5,P < 0.05）。在自我选择恢复时间且不知道经过时间的情况下，平均休息时间为118±23秒。结论：在自定节奏条件下，在重复的4分钟高强度运动中，1到4分钟的不同休息时间对运动表现的影响有限。大约120秒的主动恢复可以在细胞内恢复和维持高VO2动力学之间提供适当的平衡。
Purpose: To investigate the effect of rest duration on self-selected intensity, physiological responses, and RPE during a standardized, high-intensity interval training prescription. Subjects: Nine well-trained male runners (VO2max 71 +/- 4 mL(.)kg(-1.)min(-1)) performed three treadmill interval training sessions running at constant 5% incline. Six 4-min work bouts with either 1-, 2, or 4-min recovery periods were performed in each session. Sessions were prescribed as "high-intensity" workouts with the goal being to achieve the highest possible average running speed for the work intervals. Subjects regulated their work and rest intensity based on these instructions. In a fourth interval session, subjects self-selected recovery time in response to a fixed intensity. Results: Running velocity increased slightly (14.7 +/- 0.7 vs 14.4 +/- 0.8 km(.)h(-1), P = 0.02) when rest increased from 1 to 2 min, but showed no further increase with a 4-min rest (14.7 +/- 0.6 km(.)h(-1)). Work VO2 was slightly higher with a 2-min rest duration compared with 1 and 4 min (66.2 +/- 4.2 vs 65.1 +/- 4.2 and 64.9 +/- 4.7 mL(.)kg(-1.)min(-1), P < 0.05). Peak blood lactate was similar (6.2 +/- 2.6, 6.8 +/- 2.9, 6.2 +/- 2.6 mmol(.)L(-1)) across conditions, whereas peak RPE was slightly lower during the 4-min rest condition (17.1 +/- 1.3, 17.7 +/- 1.5, 16.8 +/- 1.5, P < 0.05). With self-selected recovery time and no knowledge of elapsed time, the average rest duration was 118 +/- 23 s. Conclusions: Under self-paced conditions, varying rest duration in a range of 1 to 4 min had limited impact on performance during repeated 4-min high-intensity exercise bouts. Approximately 120 s of active recovery may provide an appropriate balance between intracellular restitution and maintenance of high VO2 on-kinetics.