Eston R G, Thompson M
School of Sport, Health and Physical Education Sciences, University of Wales, Bangor, Gwynedd, United Kingdom.
Br J Sports Med. 1997 Jun;31(2):114-9. doi: 10.1136/bjsm.31.2.114.
The purpose of this study was to assess the efficacy of Borg's rating of perceived exertion (RPE) scale to predict maximal exercise levels to control exercise intensity in patients taking atenolol for the treatment of essential hypertension. Normally, a standard formula (220-age) is used for calculating a percentage of exercise intensity, but beta blockade can cause reductions in maximal heart rate of between 20 and 30%.
Patients were split into a control group-10 men and 10 women, aged 50 (SD 12) and 46 (9) respectively, who had risk factors for cardiovascular disease but were not taking any drugs, and a treatment group-11 men and 11 women, aged 53 (13) and 55 (13) respectively, who were established on 25-100 mg of atenolol. All patients performed two submaximal tests on a cycle ergometer. Test 1 was an estimation test, during which the RPE was reported for each increment in work rate. Test 2 was an RPE production test, during which the patient regulated the work rate according to his/her perception of effort at four predetermined points on the RPE scale (RPE 9, 13, 15, 17).
In both tests the individual correlations (r) between RPE, heart rate, and work rate ranged from 0.96 to 0.99. Analysis of variance showed no significant difference in maximal heart rate and maximal power output for the control group when predicted from the regression lines of RPE versus heart rate and RPE versus power output in the estimation test. However, the prediction of maximal power output was lower in the women in the control group and patients in the treatment group when this was predicted from the effort production protocol (P < 0.01). When exercise intensity at each RPE was expressed relative to maximal power output there were no differences between treatment and control groups.
The findings from this study confirmed the strong positive relation between RPE, heart rate, and work rate in these patients in both passive effort estimation and active effort production protocols. However, caution in applying these procedures is required because the prediction of maximal exercise levels may be lower when effort production procedures are used.
本研究旨在评估伯格自觉用力程度（RPE）量表预测最大运动水平以控制服用阿替洛尔治疗原发性高血压患者运动强度的有效性。通常，使用标准公式（220 - 年龄）来计算运动强度百分比，但β受体阻滞剂可使最大心率降低20%至30%。
患者被分为对照组（10名男性和10名女性，年龄分别为50岁[标准差12]和46岁[9]，有心血管疾病危险因素但未服用任何药物）和治疗组（11名男性和11名女性，年龄分别为53岁[13]和55岁[13]，服用25 - 100毫克阿替洛尔）。所有患者在自行车测力计上进行两次次极量测试。测试1是估计测试，在此期间报告每个工作率增量时的RPE。测试2是RPE产生测试，在此期间患者根据其在RPE量表上四个预定点（RPE 9、13、15、17）的用力感知来调节工作率。
在两项测试中，RPE、心率和工作率之间的个体相关性（r）范围为0.96至0.99。方差分析表明，在估计测试中，根据RPE与心率以及RPE与功率输出的回归线预测时，对照组的最大心率和最大功率输出无显著差异。然而，当根据用力产生方案预测时，对照组女性和治疗组患者的最大功率输出预测值较低（P < 0.01）。当将每个RPE时的运动强度相对于最大功率输出表示时，治疗组和对照组之间没有差异。
本研究结果证实了在被动用力估计和主动用力产生方案中，这些患者的RPE、心率和工作率之间存在强正相关关系。然而，应用这些程序时需要谨慎，因为使用用力产生程序时最大运动水平的预测可能较低。
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