Mornieux Guillaume, Zameziati Karim, Mutter Elodie, Bonnefoy Régis, Belli Alain
Laboratoire de Physiologie-GIP E2S, Pavillon 12, Hôpital St Jean Bonnefonds, 42055 Saint-Etienne Cedex 2, France.
J Biomech. 2006;39(7):1296-303. doi: 10.1016/j.jbiomech.2005.03.020. Epub 2005 May 31.
This report describes a new method allowing to measure the three-dimensional forces applied on right and left pedals during cycling. This method is based on a cycle ergometer mounted on a force platform. By recording the forces applied on the force platform and applying the fundamental mechanical equations, it was possible to calculate the instantaneous three-dimensional forces applied on pedals. It was validated by static and dynamic tests. The accuracy of the present system was -7.61 N, -3.37 N and -2.81 N, respectively, for the vertical, the horizontal and the lateral direction when applying a mono-directional force and -4.52 N when applying combined forces. In pedaling condition, the orientation and magnitude of the pedal forces were comparable to the literature. Moreover, this method did not modify the mechanical properties of the pedals and offered the possibility for pedal force measurement with materials often accessible in laboratories. Measurements obtained showed that this method has an interesting potential for biomechanical analyses in cycling.
本报告描述了一种新方法，该方法能够测量骑行过程中施加在左右踏板上的三维力。此方法基于安装在力平台上的自行车测力计。通过记录施加在力平台上的力并应用基本力学方程，可以计算出施加在踏板上的瞬时三维力。该方法通过静态和动态测试得到了验证。当施加单向力时，本系统在垂直、水平和横向方向的精度分别为-7.61 N、-3.37 N和-2.81 N，施加合力时精度为-4.52 N。在蹬踏条件下，踏板力的方向和大小与文献中的情况相当。此外，该方法不会改变踏板的力学性能，并且为使用实验室中常用的材料进行踏板力测量提供了可能性。所获得的测量结果表明，该方法在自行车运动的生物力学分析方面具有有趣的潜力。
