van der Slikke R M A, Mason B S, Berger M A M, Goosey-Tolfrey V L
Human Kinetic Technology, The Hague University of Applied Sciences, Johanna Westerdijkplein 75, 2521EN The Hague, The Netherlands.
The School of Sport Exercise and Health Sciences, Peter Harrison Centre for Disability Sport, Loughborough University, UK.
J Biomech. 2017 Dec 8;65:221-225. doi: 10.1016/j.jbiomech.2017.10.040. Epub 2017 Nov 10.
Wheelchair mobility performance is an important aspect in most wheelchair court sports, commonly measured with an indoor tracking system or wheelchair bound inertial sensors. Both methods provide key wheelchair mobility performance outcomes regarding speed. In this study, we compared speed profiles of both methods to gain insight into the level of agreement, for recommendations regarding future performance measurement. Data were obtained from 5 male highly trained wheelchair basketball players during match play. Players were equipped simultaneously with a tag on the footplate for the indoor tracking system (∼8 Hz) and inertial sensors on both wheels and frame (199.8 Hz). Being part of a larger study on 3 vs 3 player game formats, data were collected in several matches with varying field sizes, but activity profiles closely resembled regular match play. Both systems provide similar outcomes regarding distance covered and average speed. Due to differences in sampling frequency and sensor location (reference point) on the wheelchair (for speed calculation), minor differences were revealed at low speeds (<2.5 m/s). Since both systems provide complementary features, a hybrid solution as proved feasible in this study, could possibly serve as the new gold standard for mobility performance measurement in wheelchair basketball or wheelchair court sports in general.
轮椅移动性能是大多数轮椅场地运动的一个重要方面，通常使用室内跟踪系统或安装在轮椅上的惯性传感器进行测量。这两种方法都能提供有关速度的关键轮椅移动性能结果。在本研究中，我们比较了这两种方法的速度曲线，以深入了解一致性水平，为未来性能测量提供建议。数据来自5名训练有素的男性轮椅篮球运动员在比赛中的表现。运动员同时配备用于室内跟踪系统的踏板标签（约8Hz）以及两个车轮和车架上的惯性传感器（199.8Hz）。作为一项关于3对3比赛形式的更大规模研究的一部分，数据是在几场场地大小不同的比赛中收集的，但活动概况与常规比赛非常相似。两个系统在覆盖距离和平均速度方面提供了相似的结果。由于采样频率和轮椅上传感器位置（用于速度计算的参考点）的差异，在低速（<2.5m/s）时发现了细微差异。由于这两个系统具有互补特性，本研究证明可行的混合解决方案可能成为轮椅篮球或一般轮椅场地运动中移动性能测量的新金标准。
