Abstract
We measured the probe reaction time, which is an index of attentional demand, of 19 healthy people on a bicycle ergometer with changes of load and pedal revolutions, and determined the optimum RPM. The probe reaction time was measured at loads of 40, 60, 80, 100, 120 watts at pedal revolutions of 20, 40, 60, 80, 100 rpm, respectively. As a result of analysis of variance with pedal revolution as a factor, a significant effect was found. Furthermore, a post-hoc test (Tukey-Kramer test) showed significant differences between each of the pedal revolutions at 80, 100, 120 watts, and indicated the minimum probe reaction time at 60 rpm. These results suggest the optimal RPM was 60 rpm.
