Department of Health, Physical Education and Recreation, University of North Alabama, UNA Box 5073, Florence, AL 35632-0001, USA.
Eur J Appl Physiol. 2009 Nov;107(5):501-7. doi: 10.1007/s00421-009-1153-z. Epub 2009 Aug 13.
Session RPE (SRPE) permits subjective ratings of global effort following exercise. SRPE is useful for evaluating training load; however, mediating factors are not well understood. This study compared SRPE among treadmill trials at a clamped workload with a varied duration. Ten subjects (VO(2)max: 48.9 +/- 10.5 ml kg(-1) min(-1)) completed a maximal-exertion treadmill trial followed by treadmill trials of 20 (TM20), 30-(TM30), and 40-(TM40) min (counterbalanced) duration at approximately 70% individualized VO(2)max. Heart rate (HR) and acute RPE (during exercise) were recorded every 5 min with blood lactate concentration [La] recorded before initiating exercise and every 10 min throughout exercise to completion. Analyses showed no significant differences among TM20, TM30, and TM40 for mean HR, [La] or acute RPE which isolated effects of duration on SRPE. Session RPE (recorded 20 min post exercise) relative to overall (SRPEO), legs (SRPEL) and breathing (SRPEB) was analyzed using a 3 (trial) x 3 (SRPE: O, L, B) repeated measures ANOVA (alpha 0.05). There was no main effect for duration, but there was a significant main effect for SRPE type with SRPEO (4.40 +/- 2.18) greater than SRPEB (3.56 +/- 1.98) but no difference for SRPEL (4.43 +/- 2.16). Follow-up tests for within-trial differences showed no significant differences for SRPEL versus SRPEO, but blunted SRPEB estimations (vs. SRPEO and SRPEL). Primary results indicate affects of duration on SRPE are minimal. Further, within the limits of the current study, differentiating SRPE estimations do not appear advantageous; however, further work is warranted.
运动后感觉疲劳评分（SRPE）可用于评估运动后的整体努力程度。SRPE 可用于评估训练负荷；然而，其介导因素尚不清楚。本研究比较了在固定工作量下和不同时间跑步机试验的 SRPE。10 名受试者（最大摄氧量：48.9 ± 10.5 ml kg(-1) min(-1)) 完成了最大努力的跑步机试验，然后以大约 70%的个体最大摄氧量进行了 20 分钟（TM20）、30 分钟（TM30）和 40 分钟（TM40）的跑步机试验（平衡）。心率（HR）和急性 RPE（运动时）每 5 分钟记录一次，在开始运动前记录血乳酸浓度[La]，并在整个运动过程中每 10 分钟记录一次。分析表明，TM20、TM30 和 TM40 之间的平均 HR、[La]或急性 RPE 没有显著差异，这些差异孤立地影响了 SRPE 的持续时间。使用 3（试验）x 3（SRPE：O、L、B）重复测量方差分析（alpha 0.05）分析运动后 20 分钟记录的运动后感觉疲劳评分（SRPE）与总体（SRPEO）、腿部（SRPEL）和呼吸（SRPEB）的关系。持续时间没有主效应，但 SRPE 类型有显著的主效应，SRPEO（4.40 ± 2.18）大于 SRPEB（3.56 ± 1.98），但 SRPEL 没有差异（4.43 ± 2.16）。对试验内差异的后续测试显示，SRPEL 与 SRPEO 之间没有显著差异，但 SRPEB 的估计值（与 SRPEO 和 SRPEL）减弱。主要结果表明，持续时间对 SRPE 的影响很小。此外，在当前研究的限制范围内，区分 SRPE 估计值似乎没有优势；然而，还需要进一步的工作。
