본 연구는 건강한 20대 후반 남성을 대상으로 저항운동시 %RPM 강도에 따른 운동자각도와 생리적인 반응을 알아보는 것을 그 목적으로 하였다. 피험자는 1-RM의 50, 60, 70, 80%의 4가지 운동강도에서 저항운동을 실시하였으며 각 운동이 끝난 직후 혈중젖산농도, 심박수, 혈압을 측정하였으며, Borg 10-point scale을 사용하여 운동 자각도를 측정하였다. 연구 결과 %RM이 증가할수록 혈중젖산농도와 심박수는 유의하게 증가하였으나 혈압에서는 유의한 차이가 없었다. 운동자각도도 %RM이 증가함에 따라 유의하게 증가하였다(P<.05). 즉 혈중젖산농도와 심박수의 증가는 운동자각도를 조절할 수 있다는 것이다. 이러한 결과는 Borg 10-point scale을 사용하여 1-RM을 추정할 수 있는 정보를 제공해 준다.

The purpose of this study was to evaluate ratings of perceived exertion and physiological responses during resistance exercise of relative intensities to one repetition maximum in healthy late 20’ males. All subjects were familiar with lifting procedures and were currently involved in weight training program on a recreational basis. Nine men completed four trials. The four trials were 50, 60, 70 and 80% of one repetition maximum(1-RM). Blood lactate concentrations were measured immediately after each exercise. Heart rate and blood pressure were also recorded at these same time periods. Ratings of perceived exertion were obtained immediately after each exercise using the Borg 10-point category-ratio scale. The increase of exercise intensity to the percent of 1-RM corresponded with a significant increase in blood lactate, ratings of perceived exertion and heart rate(P<.05) but not systolic or diastolic blood pressure. It appeared that the perception of effort and heart rate increases along with increases in %RM lifted. The accumulation of blood lactate and increases of heart rate may mediate this. These results support the use of the Borg scale for monitoring resistance exercise intensity.