Chénier Félix, Pelland-Leblanc Jean-Philippe, Parrinello Antoine, Marquis Etienne, Rancourt Denis
Department of Physical Activity Science, Université du Québec à Montréal, Case postale 8888, succursale Centre-ville, Montreal, Québec H3C 3P8, Canada; Centre for Interdisciplinary Research in Rehabilitation of Greater Montreal, Montreal, Canada.
Université de Sherbrooke, Sherbrooke, Canada.
Med Eng Phys. 2021 Jan;87:30-37. doi: 10.1016/j.medengphy.2020.11.008. Epub 2020 Nov 19.
In wheelchair racing, measuring pushrim kinetics such as propulsion forces and moments is paramount for improving performance and preventing injuries. However, there is currently no instrumented racing wheel that records 3D pushrim kinetics wirelessly and at a high sample rate, which is necessary for accurately analysing wheelchair racing biomechanics. In this work, we present an instrumented wheel that measures 3D kinetics at 2500 Hz. Bidirectional wireless communication is used to interface the wheel through a smart phone. The wheel was tested with a world-class racing athlete who propelled at maximal acceleration and maximal speed on a training roller. During acceleration, the peak total force increased continuously from 186 N to 484 N while the peak tangential force was constant at 171 N ± 15 N. At higher speeds, a counterproductive tangential force was measured during the first 15% and the last 25% of the push phase, peaking at -78 N. This wheel may be of great value for both coaches and athletes to help with planning and validating training programs and adaptations to the wheelchair such as positioning. This wheel also has very high potential for further research on wheelchair racing biomechanics and on preventing shoulder pathologies associated with this sport.
在轮椅竞速中，测量诸如推进力和力矩等轮辋动力学对于提高成绩和预防损伤至关重要。然而，目前尚无能够以高采样率无线记录三维轮辋动力学的仪器化竞赛轮椅，而这对于准确分析轮椅竞速生物力学是必不可少的。在这项工作中，我们展示了一种能以2500赫兹测量三维动力学的仪器化轮椅。双向无线通信用于通过智能手机连接该轮椅。该轮椅由一名世界级竞赛运动员进行测试，他在训练滚筒上以最大加速度和最大速度推动轮椅。在加速过程中，总力峰值从186牛持续增加到484牛，而切向力峰值恒定在171牛±15牛。在较高速度时，在推动阶段的前15%和后25%期间测量到了起反作用的切向力，峰值为-78牛。这种轮椅对于教练和运动员在帮助规划和验证训练计划以及适应轮椅（如定位）方面可能具有很大价值。这种轮椅在轮椅竞速生物力学以及预防与这项运动相关的肩部疾病的进一步研究方面也具有很高的潜力。
