North Coast Academy of Sport, Lismore, Australia.
J Sports Sci. 2013;31(12):1312-8. doi: 10.1080/02640414.2013.779739. Epub 2013 May 17.
Inertial sensors may provide the opportunity for broader and more cost effective gait analysis; however some questions remain over their potential use in this capacity. The aim of the study was to determine whether an inertial sensor could discriminate between normal walking, fast walking, and running. A single group crossover design was used to compare acceleration profiles between three gait conditions: normal walking, fast walking, and running. An inertial sensor was placed on the sacrum of 12 participants (6 male, 6 female) who performed 3 trials of each gait condition on both overground and treadmill settings. A significant difference (P < 0.001) in the occurrence of heel strike in the gait cycle was found between running and both walking conditions. No differences were seen between overground and treadmill in any condition or variable. The results indicate that a single sacral mounted inertial sensor can differentiate running from normal walking and fast walking using temporal gait event measures. This study indicates that inertial sensors can differentiate walking from running gait in healthy individuals which may have potential for application in the quantification of physical activity in the health and exercise industry.
惯性传感器可能为更广泛和更具成本效益的步态分析提供机会；然而，它们在这种情况下的潜在用途仍存在一些问题。本研究旨在确定惯性传感器是否能够区分正常行走、快速行走和跑步。采用单组交叉设计比较了三种步态条件（正常行走、快速行走和跑步）下的加速度曲线。将惯性传感器放置在 12 名参与者（6 名男性，6 名女性）的骶骨上，他们在地面和跑步机上分别进行了三种步态条件的 3 次试验。在步态周期中，脚跟撞击的发生在跑步和两种行走条件之间存在显著差异（P < 0.001）。在任何条件或变量下，地面和跑步机之间均未观察到差异。结果表明，单个骶骨安装的惯性传感器可以使用时间步态事件测量值区分跑步和正常行走和快速行走。本研究表明，惯性传感器可以区分健康个体的行走和跑步步态，这可能在健康和运动行业中对身体活动的量化具有应用潜力。
