The grading ability during bicycle pedaling exercise using different loads and cadences

Abstract

　In this study, the subjects pedaled bicycles while checking ergometers to keep pedal rotations at approximately 50%rpm of the maximum effort, in order to verify the impact on the Grading ability when changing the intensity (20%rpm, 40%rpm, 60%rpm, 80%rpm) between 2 types of load (weights of 5%kp, 8%kp). The subjects were 15 healthy adult males (24.5 ± 2.5 years old) between the ages of 22 - 25 years old. The maximum cadence at each load was obtained with a bicycle ergometer, and the pedal cadence corresponding to 50%rpm of the maximum cadence was sustained for 20 seconds. Then, pedaling at a rate corresponding to four different cadences was performed twice each without checking the ergometer, and the error between the target value and the exerted power was examined. The results of the study showed that the gradation of muscle output adjustment was possible in bicycle pedaling exercise, which is a multijoint alternating exercise, and that the error was larger at low cadence (20%rpm) than at other cadences.