Laboratoire CURAPS-DIMPS, UFR des Sciences de l'Homme et de l'Environnement, Université de la Réunion, 97430 Le Tampon, Ile de la Réunion, France.
Gait Posture. 2013 Mar;37(3):463-6. doi: 10.1016/j.gaitpost.2012.08.011. Epub 2012 Sep 13.
This study investigated the accuracy and reliability of four methods using force-plate data for detecting the swing heel-off (HO) time in gait initiation. Results of these methods were compared to those obtained by means of a reference method using a footswitch. Ten young healthy adults performed 18 forward gait initiation trials at self-selected speed and at maximal speed. Results showed that the method based on vertical impulse was the most accurate and reliable in determining HO in both speed conditions. The mean error obtained with this method was -8±10ms in the self-selected speed condition (-7±10ms in the maximal speed condition), with no significant effect of gait speed (P>0.05). These findings suggest that this method based on force-plate data is valid and reliable for detecting HO in forward gait initiation in the absence of additional hardware.
本研究调查了四种使用测力板数据检测步态起始时摆动脚跟离地（HO）时间的方法的准确性和可靠性。这些方法的结果与使用脚踏开关的参考方法获得的结果进行了比较。10 名年轻健康成年人以自定速度和最大速度进行了 18 次向前步态起始试验。结果表明，在两种速度条件下，基于垂直冲量的方法在确定 HO 时最准确和可靠。该方法在自定速度条件下的平均误差为-8±10ms（最大速度条件下为-7±10ms），速度对结果没有显著影响（P>0.05）。这些发现表明，在没有额外硬件的情况下，这种基于测力板数据的方法在检测向前步态起始时的 HO 方面是有效和可靠的。
