Ericson M O, Nisell R
Department of Anatomy, Karolinska Institute, Stockholm, Sweden.
Int J Sports Med. 1988 Apr;9(2):118-22. doi: 10.1055/s-2007-1024991.
The aim of this study was to record the forces applied to the pedal during ergometer cycling and to calculate the effectiveness of these force vectors. Six healthy subjects rode a weight-braked bicycle ergometer at different work loads, pedaling rates, saddle heights, and pedal foot positions. The left lower limb and crank motions were recorded by a cinefilm camera and pedal reaction forces by a Kistler force measuring transducer mounted on the left pedal. The force effectiveness was computed as a ratio between the force tangential to instantaneous direction of pedal movement and the resultant force. The mean force efficiency ratio significantly increased by an increase of the ergometer work load or use of the anterior foot position instead of the posterior. It was not significantly changed due to alterations of the pedaling rate or saddle height.
本研究的目的是记录在测力计骑行过程中施加在踏板上的力，并计算这些力矢量的有效性。六名健康受试者在不同的工作负荷、蹬踏速率、鞍座高度和踏板脚位置下骑乘带有重量刹车的自行车测力计。用电影摄影机记录左下肢和曲柄运动，并用安装在左踏板上的奇石乐测力传感器记录踏板反作用力。力的有效性计算为踏板运动瞬时方向的切向力与合力之比。随着测力计工作负荷的增加或使用前脚位置而非后脚位置，平均力效率比显著增加。由于蹬踏速率或鞍座高度的改变，其没有显著变化。
