抄録
Bicycles have been widely used in Japan. Particularly, the use of city-bicycles (mamachari) is becoming increasingly frequent among people of all generations. However, for younger people especially, bicycles are used in a setting that does not match the body geometry or riding environment. This study examined the effects of riding position on output power measured using a power meter attached to pedals with various cadences and speed conditions to ascertain the most comfortable exercise efficiency. Moreover, the relation between joint moment (hip, knee, ankle) and pedal reaction force, and range of movement for joint were evaluated using a three-dimensional motion analysis system. From the result, outdoor and indoor experiments with the range of this study revealed the optimal saddle height h to minimize the mechanical power output generated in the crank. Moreover, the mechanical power output generated in the crank depends on the tester pedaling skill.
