在年轻健康成人中,使用感知运动的等级来处方血流受限的自行车以平衡生理和知觉需求

Nathan D. W. Smith, Brendan R. Scott, Olivier Girard, Jeremiah J. Peiffer
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引用次数: 0

摘要

比较无和有血流限制(CONPWR、BFRPWR、CONRPE和BFRRPE)时固定功率和知觉调节循环的生理和知觉反应。12名娱乐性活动的男性以与第一次通气阈值相对应的功率循环10分钟,对于CONRPE和BFRRPE,则为CONPWR期间报告的感知运动水平。血流限制设定为估计动脉闭塞压的60%。呼吸测量和心率平均为2分钟。感知用力、用力、肌肉不适和袖带疼痛每2分钟记录一次(0-10分)。分别在运动前、运动后和运动后2分钟测量血乳酸。与所有其他条件相比,BFRPWR试验引起了更大的生理和知觉反应。BFRRPE期间的耗氧量低于CONPWR(- 19.2±20.6%,p <;0.001)和CONRPE(- 6.7±9.3%,p = 0.007)。CONPWR期间的心率高于BFRRPE(8.2±9.8%,p <;0.001)和CONRPE(9.4±6.5%,p <;0.001)。CONPWR组、CONRPE组和BFRRPE组血乳酸浓度无显著性差异;然而,与固定rpe试验相比,在固定功率试验中更大(31.5±25.6%,p <;0.001)。肌肉不适在BFRRPE和CONPWR之间没有差异(2.4±1.1 au),但两者均高于CONRPE(1.8±1.5 au), p <;0.001)。与BFRRPE(2.2±1.1 au)相比,BFRPWR(3.3±1.7 au)期间袖带疼痛更大,p <;0.001)。在固定功率输出下开有氧BFR循环会增加生理压力,但不适和疼痛也会加剧,这可能会限制其在健康成人中的应用。固定rpe方法似乎平衡了生理和感知需求,因此如果固定功率输出方法无法忍受,则可能是一种可行的替代方案。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Prescribing Blood Flow-Restricted Cycling Using Rating of Perceived Exertion Balances the Physiological and Perceptual Demands in Young Healthy Adults

Prescribing Blood Flow-Restricted Cycling Using Rating of Perceived Exertion Balances the Physiological and Perceptual Demands in Young Healthy Adults

To compare the physiological and perceptual responses during fixed-power and perceptually regulated cycling, both without and with blood flow restriction (CONPWR, BFRPWR, CONRPE and BFRRPE). Twelve recreationally active men cycled for 10 min at the power corresponding to the first ventilatory threshold or, for CONRPE and BFRRPE, the perceived exertion level reported during CONPWR. Blood flow restriction was set at 60% of estimated arterial occlusion pressure. Ventilatory measures and heart rate were averaged into 2-min blocks. Perceived exertion, effort, muscular discomfort and cuff pain were recorded every 2 min (0–10 scale). Blood lactate was measured pre-exercise, post-exercise, and 2 min post-exercise. The BFRPWR trial elicited greater physiological and perceptual responses compared to all other conditions. Oxygen consumption during BFRRPE was lower than CONPWR (−19.2 ± 20.6%, p < 0.001) and CONRPE (−6.7 ± 9.3%, p = 0.007). Heart rate during CONPWR was greater than BFRRPE (8.2 ± 9.8%, p < 0.001) and CONRPE (9.4 ± 6.5%, p < 0.001). Blood lactate concentration was not different between CONPWR, CONRPE and BFRRPE; yet was greater during fixed-power compared to fixed-RPE trials (31.5 ± 25.6%, p < 0.001). Muscular discomfort was not different between BFRRPE and CONPWR (2.4 ± 1.1 au), yet both were greater compared to CONRPE (1.8 ± 1.5 au, p < 0.001). Cuff pain was greater during BFRPWR (3.3 ± 1.7 au) compared to BFRRPE (2.2 ± 1.1 au, p < 0.001). Prescribing aerobic BFR cycling at a fixed power output increases physiological strain, yet discomfort and pain are also heightened, which may limit its use in healthy adults. The fixed-RPE method appears to balance the physiological and perceptual demands and thus could be a viable alternative if a fixed power output approach is intolerable.

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