Laboratory of Performance, Health, Metrology, and Society, University of Reims Champagne-Ardenne, Reims, France.
Sports Biomech. 2021 Jun;20(4):391-406. doi: 10.1080/14763141.2018.1556324. Epub 2019 Jan 28.
Methods based on inseam length (IL) for saddle height adjustment in cycling are frequently employed. However, these methods were designed for medium-sized people. The aim of this study was to evaluate knee angle during pedalling by 2D video analysis and perceived comfort using a subjective scale under three saddle height conditions: (1) self-selected saddle height, (2) Genzling method (0.885 × IL) and (3) Hamley method (1.09 × IL minus crank arm length). Twenty-six cyclists of heterogeneous morphology were recruited. Three groups were determined based on IL: Short (IL < 0.8 m), Medium (0.8 m < IL< 0.88 m) and Long (IL > 0.88 m). The results showed that Medium and Long IL groups usually rode with saddle heights allowing knee angles consistent with those previously shown to prevent injuries (30°-40°). However, Short IL group, who were all children, self-selected a too low saddle height (knee angle was too large). Genzling and Hamley methods gave identical results for Medium IL group, permitting knee angles in the range of 30°-40°. However, both methods caused important differences between Short and Long IL groups. Hamley method was more suitable for short ILs, while Genzling method was more suitable for long ILs.
方法基于裆长（IL）用于调整自行车鞍座高度。然而，这些方法是为中等身材的人设计的。本研究的目的是通过二维视频分析评估蹬踏时的膝关节角度，并使用主观量表评估三种鞍座高度条件下的舒适度：（1）自我选择的鞍座高度，（2）Genzling 方法（0.885 × IL）和（3）Hamley 方法（1.09 × IL 减去曲柄臂长度）。招募了 26 名具有不同形态的自行车运动员。根据 IL 确定了三组：短（IL < 0.8 m）、中（0.8 m < IL < 0.88 m）和长（IL > 0.88 m）。结果表明，中 IL 和长 IL 组通常使用允许膝关节角度与先前研究表明预防损伤的角度（30°-40°）一致的鞍座高度骑行。然而，所有儿童的短 IL 组自我选择的鞍座高度过低（膝关节角度过大）。Genzling 和 Hamley 方法对中 IL 组的结果相同，允许膝关节角度在 30°-40°范围内。然而，这两种方法在短 IL 和长 IL 组之间产生了重要的差异。Hamley 方法更适合短 IL，而 Genzling 方法更适合长 IL。
