Bicycle and Ergonomics
M Oshima, S. Iito, Aya Watanabe · The Japanese Journal of Ergonomics · 1967
Muscle activities during cycling of 4kg/msec. were electromyographically studied by means of a bicycle ergometer worked up by T. Toriyama. Cycling speed was 85rpm.9 positions of the pedal shaft in relation to the handle and saddle sites were examined. The distance of the handle from the saddle center was 45-65cm. Through finding the pedal position where the least electrical activities of m. gluteus maximum, m. rectus femoris, m. biceps femoris and other main muscles contracting in cycling were shown, the optimum pedal positions proved to be demonstrated by the proposed method. It seems to be important to have determined the limit conditions of the handle, saddle or pedal positions at first.