Influence of Seat Height and Crank Rotation Speed on Biomechanics of Cyclist's Leg Bones

10.6567/IFToMM.14TH.WC.PS1.004

Chiu-Fan Hsieh；Wen-Huang Lin；You-Qing Zhu；Ching-Sheng Liu

Bicycle ； Leg ； Biomechanics ； Kinematics ； Dynamics

Proceedings of the 14th IFToMM World Congress

14th-5（2015 / 11 / 06）

49 - 53

英文

Because the transmission system is crucial to a bicycle's overall structure, it is important to understand the patterns of a cyclist's leg movements and the related changes in stress when this system actuates under a load. This study thus uses reverse engineering technique to construct a three-dimensional biomechanics model of a human leg based on biological, mechanical kinematic, and dynamic principles. The various analyses, performed on a 170 cm tall skeleton model (with 100 cm long legs), calculate angular velocity, angular acceleration, and leg stress using varied bicycle seat height and crank rotation speed. They thus provide valuable insights into how these variations affect the leg bones.