Cook Dane B, Nagelkirk Paul R, Peckerman Arnold, Poluri Ashok, Lamanca John J, Natelson Benjamin H
Center for the Study of War-Related Illnesses, VA NJ Health Care, East Orange, NJ 07018, USA.
Med Sci Sports Exerc. 2003 Apr;35(4):563-8. doi: 10.1249/01.MSS.0000058360.61448.6C.
It has been reported that ratings of perceived exertion (RPE) are elevated in chronic fatigue syndrome (CFS). However, methodological limitations have rendered this conclusion suspect. The purpose of the present investigation was to examine RPE during exercise in civilians with CFS by comparing subjects at both absolute exercise stage and relative oxygen consumption reference criteria.
A sample of 39 civilian females (N = 19 CFS, 34 +/- 7 yr; N = 20 healthy controls, 33 +/- 7 yr) underwent a maximal exercise test on a treadmill. RPE were obtained during the last 15 s of each 3-min stage using Borg's 6-20 scale.
There were no significant differences in peak [OV0312]O(2), RER, or RPE. However, controls exercised longer (20.0 +/- 1.1 vs 15.9 +/- 1.1 min, P = 0.01, healthy vs CFS) and had higher peak HR (183 +/- 3 vs 174 +/- 2 bpm, P = 0.03, healthy vs CFS). Civilians with CFS reported higher RPE at stages 3 through 5 compared with controls (F(3,111)= 3.6,P = 0.017). Preexercise fatigue ratings were not a significant predictor of perceived exertion during exercise. There were no group differences (F(1,37)= 1.9, P = 0.17) when RPE were expressed relative to peak [OV0312]O(2).
Our results show that RPE are greater in civilians with CFS when the data are expressed in terms of absolute exercise intensity. However, by examining RPE relative to a common maximum (i.e., peak [OV0312]O(2)) no differences were observed. The findings of the present investigation challenge the notion that RPE are dysregulated in CFS.
据报道，慢性疲劳综合征（CFS）患者的主观用力感觉评分（RPE）会升高。然而，方法学上的局限性使得这一结论受到质疑。本研究的目的是通过比较处于绝对运动阶段和相对耗氧量参考标准的受试者，来检查CFS平民患者运动期间的RPE。
39名平民女性样本（N = 19名CFS患者，年龄34±7岁；N = 20名健康对照者，年龄33±7岁）在跑步机上进行了最大运动测试。使用Borg的6 - 20量表在每个3分钟阶段的最后15秒获取RPE。
峰值摄氧量、呼吸交换率或RPE无显著差异。然而，对照组运动时间更长（20.0±1.1分钟对15.9±1.1分钟，P = 0.01，健康组对CFS组），且峰值心率更高（183±3次/分钟对174±2次/分钟，P = 0.03，健康组对CFS组）。与对照组相比，CFS平民患者在第3至5阶段报告的RPE更高（F(3,111)= 3.6，P = 0.017）。运动前疲劳评分不是运动期间主观用力感觉的显著预测因素。当RPE相对于峰值摄氧量表示时，两组之间没有差异（F(1,37)= 1.9，P = 0.17）。
我们的结果表明，当数据以绝对运动强度表示时，CFS平民患者的RPE更高。然而，通过相对于共同最大值（即峰值摄氧量）检查RPE，未观察到差异。本研究结果对CFS中RPE失调的观点提出了挑战。
