THE DEVELOPMENT OF RATING OF PERCEIVED EXERTION-BASED TESTS OF PHYSICAL WORKING CAPACITY

摘要

The purpose of the present study was to use ratings of perceived exertion (RPE) from the Borg (6-20) and OMNI-Leg (0-10) scales to determine the Physical Working Capacity at the Borg and OMNI thresholds (PWC^sub BORG^ and PWC^sub OMNI^). PWC^sub BORG^ and PWC^sub OMNI^ were compared with other fatigue thresholds determined from the measurement of heart rate (the Physical Working Capacity at the Heart Rate Threshold: PWC^sub HRT^), and oxygen consumption (the Physical Working Capacity at the Oxygen Consumption Threshold,...), as well as the ventilatory threshold (VT). Fifteen men and women volunteers (mean age ± SD = 22 ± 1 years) performed an incremental test to exhaustion on an electronically braked ergometer for the determination of ... and VT. The subjects also performed 4 randomly ordered workbouts to exhaustion at different power outputs (ranging from 60 to 206W) for the determination of PWC^sub BORG^, PWC^sub OMNI^, PWC^sub HRT^, and ... The results indicated that there were no significant mean differences among the fatigue thresholds: PWC^sub BORG^ (mean ± SD= 133 ± 37W; 67 ± 8% of ...), PWC^sub OMNI^ (137 ± 44W; 68 ± 9% of ...), PWC^sub HRT^ (135 ± 36W; 68 ± 8% of ...), ...(145 ± 41W; 72 ± 7% of ...) and VT (131 ± 45W; 66 ± 8% of ...). The results of this study indicated that the mathematical model used to estimate PWC^sub HRT^ and ... can be applied to ratings of perceived exertion to determine PWC^sub BORG^ and PWC^sub OMNI^ during cycle ergometry. Salient features of the PWC^sub BORG^ and PWC^sub OMNI^ tests are that they are simple to administer and require the use of only an RPE scale, a stopwatch, and a cycle ergometer. Furthermore, the power outputs at the PWC^sub BORG^ and PWC^sub OMNI^ may be useful to estimate the VT noninvasively and without the need for expired gas analysis. [PUBLICATION ABSTRACT]