1 Comparison of the relation with muscle activity ( facial and leg ) between Borg - and facial pictorial - RPE scale for perceived exertion

The aims of this study were 1) to determine the relation between facial pictorial RPE and facial EMG 2) to compare the correlation with facial muscle activity and active muscle activity between Borg and facial pictorial RPE scale. A cross-sectional, perceptual estimation design was used to assess exertional perceptions during a load-incremented cycle ergometer. Forty volunteers, including 22 males and 18 females were recruited. The effects of exercise intensity on EMG activity of the corrugator supercilii (CS), masseter and vastus lateralis (VL) muscles, heart rate (HR) and the rating of perceived exertion (RPE) derived from Borg and facial pictorial RPE were investigated, and the correlations among these parameters were determined. The relation between facial pictorial RPE and facial EMG was determined. The result of this study suggested that the facial RPE scale was as good as Borg RPE for self-report perceived exertion and highly correlated with active muscle activity. However, the facial RPE scale did not show the evidence that was more correlated with facial muscle activity than the Borg RPE scale.