Mahon A D, Marsh M L
Human Performance Laboratory, Ball State University, Muncie, Indiana 47306.
Int J Sports Med. 1992 Nov;13(8):567-71. doi: 10.1055/s-2007-1024566.
The purpose of this study was to examine the reliability of the rating of perceived exertion (RPE), using the Borg 6-20 scale, at ventilatory threshold (VT) in children. Thirty children (19 male, 11 female) with a mean +/- SD age of 10.4 +/- 1.1 yrs performed two graded exercise tests for the assessment of VT and VO2max. RPE was recorded throughout each exercise test. There were no significant (p > 0.05) differences between the mean VO2max (50.9 +/- 6.0 vs 51.0 +/- 5.7 ml.kg-1.min-1; r = 0.95) or the mean VO2 at VT (36.2 +/- 4.4 vs 36.7 +/- 4.5 ml.kg-1.min-1; r = 0.87) between trials. The mean RPE at VT during trial 1 (12.4 +/- 2.7) was significantly higher than during trial 2 (11.4 +/- 3.3; p < 0.05). The test-retest reliability correlation for the RPE at VT was r = 0.78. The lower RPE in the second trial may have been due to a greater comfort and familiarity with the testing procedures. The reliability analysis indicates that the RPE at VT within a given child is fairly consistent from trial to trial. However, large inter-individual variability in the RPE at VT (range = 6 to 19) was noted and was not related to variations in the onset of VT. This raises some concern over the use of a given RPE value or range of RPE values in the regulation of exercise intensity for this age group. The test-retest reliability of VT and VO2max in this age group is similar to previous reports.
本研究的目的是使用Borg 6-20量表，检验儿童在通气阈值（VT）时主观用力感觉（RPE）评分的可靠性。30名儿童（19名男性，11名女性），平均年龄为10.4±1.1岁，进行了两次分级运动测试，以评估通气阈值和最大摄氧量（VO2max）。在每次运动测试过程中记录主观用力感觉评分。两次测试之间，平均最大摄氧量（50.9±6.0与51.0±5.7 ml·kg-1·min-1；r = 0.95）或通气阈值时的平均摄氧量（36.2±4.4与36.7±4.5 ml·kg-1·min-1；r = 0.87）均无显著差异（p>0.05）。第一次测试时通气阈值时的平均主观用力感觉评分为（12.4±2.7），显著高于第二次测试时（11.4±3.3；p<0.05）。通气阈值时主观用力感觉评分的重测信度相关性为r = 0.78。第二次测试时主观用力感觉评分较低可能是由于对测试程序更加熟悉和舒适。可靠性分析表明，给定儿童通气阈值时的主观用力感觉评分在各次测试之间相当一致。然而，通气阈值时主观用力感觉评分存在较大的个体间差异（范围为6至19），且与通气阈值开始时的变化无关。这引发了对该年龄组运动强度调节中使用给定主观用力感觉评分值或主观用力感觉评分值范围的一些担忧。该年龄组通气阈值和最大摄氧量的重测信度与先前报告相似。
