Satonaka A, Suzuki N, Kawamura M
Department of Physical Therapy, Graduate School of Medicine, Nagoya University, Nagoya, Japan.
J Sports Med Phys Fitness. 2012 Oct;52(5):474-82.
The purposes of this study were to investigate: the relationship between ratings perceived exertion (RPE) and percentage of maximal oxygen uptake (%VO2max) during submaximal exercise; the influence of daily physical activities on RPE; and the influence of aerobic fitness on RPE.
The participants were thirty-eight adults with chronically physical challenges. Submaximal exercise testing was conducted to estimate VO2max. The participants themselves declared their perceived exertion just before the end of the exercise testing by indicating the Borg's 6-20 RPE scale. Measurement of continuous heart rates was employed for measurement of the intensity of daily physical activities. The relationship between %VO2max and RPE was analyzed.
There was a significant correlation between %VO2max and RPE only in the active men who did daily aerobic physical activities with intensity of 30%HRR and more (N.=9, r=0.74, P=0.02). In the good fitness groups of both women and men, the actual %VO2max in 11 out of 12 participants was lower than the reference value of %VO2max of the RPE while the opposite trend was found in poor aerobic fitness group.
Our results recommend that RPE should be used together with objective physiological variables such as HR for assessment of exercise intensity in people with chronically physical challenges, especially who are low in aerobic fitness or who are inactive.
本研究旨在调查：次最大运动期间自感用力度（RPE）与最大摄氧量百分比（%VO2max）之间的关系；日常身体活动对RPE的影响；以及有氧适能对RPE的影响。
参与者为38名患有慢性身体疾病的成年人。进行次最大运动测试以估计VO2max。参与者在运动测试即将结束前通过指出Borg的6 - 20 RPE量表来表明他们的自感用力度。采用连续心率测量来测量日常身体活动的强度。分析了%VO2max与RPE之间的关系。
仅在每天进行强度为30%心率储备及以上的有氧身体活动的活跃男性中（N = 9，r = 0.74，P = 0.02），%VO2max与RPE之间存在显著相关性。在男女的良好适能组中，12名参与者中有11名的实际%VO2max低于RPE的%VO2max参考值，而在有氧适能较差的组中发现了相反的趋势。
我们的结果表明，在评估患有慢性身体疾病的人群，尤其是有氧适能较低或不活跃人群的运动强度时，RPE应与诸如心率等客观生理变量一起使用。
