Eleven men rode a bicycle ergometer with instrumented force pedals to determine the effects of pedalling rate and power output on the total resultant force, Fr, and the force component perpendicular to the crank arms. Data were obtained at power outputs of 1OOW and 200W for pedalling rates of 4 0 to 120 RPM in intervals of 10 RPM. The average Fr was lowest at 90 RPM for lOOW and 100 RPM for 200W. It could by speculated from the results that pedalling at 90 to 100 RPM may minimize peripheral forces and therefore peripheral muscle fatigue even though it may result in a higher energy consumption.
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