Borg G, Domserius M, Kaijser L
Department of Psychology, University of Stockholm, Sweden.
Eur J Appl Physiol Occup Physiol. 1990;60(5):382-4. doi: 10.1007/BF00713503.
The purpose of the study was to determine whether the perception of exertion is affected by alcohol during physical performance and whether altered self-rating of exertion is the result of an altered perception per se or of an altered physical capacity to perform work. Ten healthy men participated. Each subject was his own control and received an alcohol dose corresponding to 1 g.kg-1 body mass in 40% solution in the experimental session. The exercise test was performed on a cycle ergometer with an initial intensity of 50 W which was increased stepwise by 50 W at 4-min intervals up to near-maximal. The rating of perceived exertion (RPE) did not differ between alcohol and control sessions. Alcohol induced a significant increase in heart rate during exercise at 50 W (delta x = 8 beats.min-1) and at 100 W (delta x = 10 beats.min-1), while the change at higher intensities was insignificant. The systolic blood pressure and the blood lactate concentration were not significantly changed by alcohol. It is concluded that a moderate dose of alcohol does not alter RPE during physical exercise either per se or secondarily to an altered physical capacity to perform work.
该研究的目的是确定在体力活动期间，用力感知是否会受到酒精的影响，以及用力自我评级的改变是本身感知改变的结果还是工作体能改变的结果。十名健康男性参与了研究。在实验环节，每位受试者均作为自身对照，接受了相当于每千克体重1克的酒精剂量，以40%的溶液形式摄入。运动测试在自行车测力计上进行，初始强度为50瓦，每4分钟逐步增加50瓦，直至接近最大强度。在酒精摄入和对照环节之间，自觉用力程度（RPE）并无差异。酒精导致运动时50瓦强度下心率显著增加（Δx = 8次/分钟）以及100瓦强度下心率显著增加（Δx = 10次/分钟），而更高强度下的变化不显著。收缩压和血乳酸浓度并未因酒精而发生显著变化。研究得出结论，适量酒精在体育锻炼期间本身不会改变RPE，也不会因工作体能改变而间接改变RPE。
