Abstract
In this study, joint torque power of pedaling in cycling was investigated with free body diagram of lower limb. To calculate joint torque of lower limbs, 2-dimensional free body diagram of lower limbs are formulated. We assumed that movement of greater trochanters in cycling pedaling was too small to consider and bicycle shoes were fixed to binding pedal. The free body diagram of lower limbs in 2-dimensional plane had two degrees of freedom. These were the crank angle and the ankle angle, when the movement of greater trochanters was neglected. From the results, the subjects were divided into three groups. It can be seen that the muscle fatigue was most reduced in group3.
