Applied Physiology Laboratory, Department of Kinesiology, Health Promotion, and Recreation, University of North Texas, Denton, TX, USA.
Percept Mot Skills. 2023 Aug;130(4):1663-1686. doi: 10.1177/00315125231180383. Epub 2023 Jun 12.
This is a two-part study to determine one or more reliable physiological anchors for perception of effort. The purpose of Study 1 was to compare ratings of perceived exertion (RPE) at the ventilatory threshold (VT) in running, cycling, and upper body exercise with the premise that if RPE at VT did not differ across exercise modes, VT might provide a unique set of physiological inputs for perception of effort. For 27 participants, values for VT and for RPE at VT (Borg 6 to 20 scale) averaged 9.4 km⋅h ( = 0.7) and 11.9 km⋅h ( = 1.4) respectively in running, 135 W ( = 24) and 12.1 W ( = 1.6) in cycling, and 46 W ( = 5) and 12.0 W ( 1.7) in upper body exercise. RPE did not differ, suggesting that VT may anchor effort perception. In Study 2, 10 participants performed cycle ergometer exercise for 30 minutes at their VT ( = 101 W, 21), at their maximal lactate steady state ( = 143 W, = 22), and at their critical power (CP; = 167 W, = 23). Mean end-exercise RPE were 12.1 ( = 2.1), 15.0 ( = 1.9), and 19.0 ( = 0.5), respectively. The very close clustering of RPE during exercise at CP hints that the confluence of physiological responses at CP may (also) serve as a determinant in perception of effort.
这是一项旨在确定一个或多个可靠的生理锚点来感知努力程度的两项研究。研究 1 的目的是比较跑步、骑行和上肢运动的通气阈（VT）时的感知用力程度（RPE）评分，前提是如果不同运动模式下的 VT 时的 RPE 没有差异，那么 VT 可能为感知用力提供一组独特的生理输入。对于 27 名参与者，在跑步中 VT 的平均值为 9.4 km·h（ = 0.7），VT 时的 RPE 平均值为 11.9 km·h（ = 1.4）；在骑行中，VT 的平均值为 135 W（ = 24），VT 时的 RPE 平均值为 12.1 W（ = 1.6）；在上肢运动中，VT 的平均值为 46 W（ = 5），VT 时的 RPE 平均值为 12.0 W（ = 1.7）。RPE 没有差异，这表明 VT 可能锚定用力感知。在研究 2 中，10 名参与者在 VT（ = 101 W， = 21）、最大乳酸稳态（ = 143 W， = 22）和临界功率（CP； = 167 W， = 23）下进行了 30 分钟的自行车测功仪运动。平均运动结束时的 RPE 分别为 12.1（ = 2.1）、15.0（ = 1.9）和 19.0（ = 0.5）。CP 下运动时 RPE 非常接近聚类，这表明 CP 下生理反应的融合也可能（也）作为用力感知的决定因素。
