School of Science and Health, Western Sydney University, Penrith, New South Wales, Australia.
J Strength Cond Res. 2018 Jul;32(7):1919-1922. doi: 10.1519/JSC.0000000000002318.
Eggers, TM, Massard, TI, Clothier, PJ, and Lovell, R. Measuring vertical stiffness in sport with accelerometers: Exercise caution! J Strength Cond Res 32(7): 1919-1922, 2018-This study aimed to determine the measurement accuracy of triaxial accelerometers, to determine vertical stiffness (Kvert) during overground running, and to examine the influence of device location. Seventeen healthy adults wore 2 triaxial accelerometers (positioned between scapulae and at lumbar spine) during a 2-minute continuous 20-m shuttle run (12 km·h), which was repeated 7 days later. Accelerometer-derived Kvert data were compared with that calculated from corresponding force-plate ground contacts (criterion measure). Moderate correlations (r = 0.65-0.66) between the accelerometer and criterion measure were identified, irrespective of unit location. However, accelerometer-determined Kvert had questionable reliability in both positions (intraclass correlation coefficient = 0.70-0.71). These results suggest caution be taken when using accelerometer-derived Kvert during overground running.
埃格斯、TM、马萨尔德、TI、克洛泽、PJ 和洛弗尔，R. 使用加速度计测量运动中的垂直刚度：需谨慎！J 力量与调节研究 32（7）：1919-1922，2018-本研究旨在确定三轴加速度计的测量精度，确定在地面跑步过程中的垂直刚度（Kvert），并研究设备位置的影响。17 名健康成年人在 2 分钟的连续 20 米穿梭跑（12 公里·小时）期间佩戴 2 个三轴加速度计（置于肩胛骨之间和腰椎处），7 天后重复进行。加速度计得出的 Kvert 数据与来自相应的力板地面接触的计算值（标准测量值）进行比较。无论单位位置如何，加速度计和标准测量值之间都存在中度相关性（r = 0.65-0.66）。然而，在两个位置，加速度计确定的 Kvert 可靠性都存在问题（组内相关系数=0.70-0.71）。这些结果表明，在地面跑步过程中使用加速度计得出的 Kvert 时需谨慎。
