Department of Health, Physical Education and Recreation, University of North Alabama, Florence, Alabama, USA.
J Strength Cond Res. 2011 Jun;25(6):1598-604. doi: 10.1519/JSC.0b013e3181ddf6a2.
Session rating of perceived exertion (SRPE) permits global effort estimations after an exercise bout and has shown promise for evaluating training load. However, factors mediating SRPE are not well understood. The purpose of this study was to compare SRPE between cycling and treadmill exercise at low and moderate intensities. In a counterbalanced order, male subjects (n = 7) completed a VO2max trial on a cycle ergometer and a motor-driven treadmill. Then, participants completed trials at 50 and 75% mode-specific VO2max on a cycle ergometer (BK75, BK50) and a treadmill (TM75, TM50) to achieve ∼ 400-kcal energy expenditure per trial. Acute RPE (i.e., during exercise) at 5 minutes, midway, and test termination were recorded with SRPE (20-minutes postexercise) expressed as overall (SRPEO), legs (SRPEL), and breathing also recorded were heart rate (HR) and change in rectal temperature (ΔTrec). Significance was accepted at p ≤ 0.05. Repeated-measures analysis of variance revealed significantly greater SRPE for higher intensities within each mode. Crossmodal comparisons also show a higher SRPE at moderate (75% VO2max) intensities [SRPEO] = BK75: 7.6 ± 1.0, TM75: 6.9 ± 1.3) vs. lower (50% VO2max) intensities (BK50: 4.6 ± 1.4, TM50: 4.6 ± 1.1). Within modes, SRPE corresponded well with ΔTrec and HR. Acute RPE was linked with intensity and drifted upward across time. Results indicated that overall and differentiated SRPEs are magnified with exercise intensity with the corresponding disruption in internal environment potentially mediating subjective responses. From a practical application standpoint, SRPE provides a subjective assessment for immediate evaluation of daily training. Results indicate that, when using SRPE to monitor training, consideration should be given to responses across differing exercise modes.
主观感觉用力程度评分（SRPE）可在运动后对整体用力情况进行估计，并且已被证明可用于评估训练负荷。然而，介导 SRPE 的因素尚不清楚。本研究旨在比较低强度和中等强度下的自行车和跑步机运动的 SRPE。在平衡的顺序下，男性受试者（n = 7）在自行车测力计和电动跑步机上完成了 VO2max 试验。然后，参与者在自行车测力计（BK75、BK50）和跑步机（TM75、TM50）上以 50%和 75%的特定模式 VO2max 完成试验，以实现每次试验约 400 卡路里的能量消耗。在运动的第 5 分钟、中途和试验结束时记录急性 RPE（即运动期间），并用 SRPE（运动后 20 分钟）表示整体（SRPEO）、腿部（SRPEL）和呼吸。还记录了心率（HR）和直肠温度变化（ΔTrec）。p ≤ 0.05 被认为具有统计学意义。重复测量方差分析显示，在每种模式下，强度较高时的 SRPE 显著更高。跨模态比较还显示，中等强度（75%VO2max）[SRPEO]的 SRPE 更高（BK75：7.6 ± 1.0，TM75：6.9 ± 1.3），而较低强度（50%VO2max）（BK50：4.6 ± 1.4，TM50：4.6 ± 1.1）。在模式内，SRPE 与ΔTrec 和 HR 对应良好。急性 RPE 与强度有关，并随时间漂移。结果表明，整体和差异化的 SRPE 随着运动强度的增加而放大，内部环境的相应破坏可能介导了主观反应。从实际应用的角度来看，SRPE 提供了对日常训练的即时评估的主观评估。结果表明，当使用 SRPE 来监测训练时，应考虑不同运动模式下的反应。
