Department of Health Sciences, Public University of Navarre, Pamplona, Spain; Studies, Research and Sports Medicine Centre (CEIMD), Government of Navarre, Pamplona, Spain.
Department of Health Sciences, Public University of Navarre, Pamplona, Spain.
J Biomech. 2024 Jul;172:112202. doi: 10.1016/j.jbiomech.2024.112202. Epub 2024 Jun 19.
Differences in running gait between treadmill and overground running has been subject of study, while consistency of group differences between running surfaces has not been previously analysed. This study examined both the differences between running surfaces and the consistency of sex-based differences between surfaces in some spatiotemporal and kinematic variables measured by an inertial measurement unit fastened over the lumbar spine. Thirty-two (sixteen females) endurance runners firstly performed overground and then treadmill (1 % inclination) runs at speeds between 9-21 km∙h. Males showed lower flight time (FT) [moderate effect size (ES)] during treadmill running compared to overground, while females showed greater stride frequency (SF) (moderate ES), lower stride length (SL) (moderate ES), FT (moderate ES), and vertical (VT) trunk displacement (moderate ES), as well as greater medio-lateral (ML) trunk displacement (moderate ES). No differences in CT between surfaces were found (trivial to small). Furthermore, all the sex-differences were consistent between treadmill and overground running: Males showed lower SF (large and moderate ES, respectively), greater SL (large and moderate ES) and CT (moderate and large ES), lower FT (large ES), greater VT displacement (moderate to large ES), and lower ML displacement (moderate ES) than females. These results may be of interest to carefully transfer the running gait analyses between surfaces depending on sex.
在研究中，人们已经研究了跑步机和地面跑步之间的跑步步态差异，而在跑步表面之间的组差异的一致性方面尚未进行分析。本研究使用固定在腰椎上的惯性测量单元测量了一些时空和运动学变量，检查了跑步表面之间的差异以及表面之间基于性别的差异的一致性。32 名（16 名女性）耐力跑步者首先在地面上跑步，然后在速度为 9-21 km·h 的跑步机（1%倾斜度）上跑步。与地面跑步相比，男性在跑步机跑步时的腾空时间（FT）[中等效应量（ES）]较低，而女性的步频（SF）[中等 ES]较高，步长（SL）[中等 ES]、FT（中等 ES）和垂直（VT）躯干位移（中等 ES）较低，以及更大的横向（ML）躯干位移（中等 ES）。在表面之间没有发现 CT 差异（微不足道到小）。此外，所有性别差异在跑步机和地面跑步之间都是一致的：男性的 SF（大到中等 ES）、SL（大到中等 ES）和 CT（中等和大 ES）较高，FT（大 ES）较低，VT 位移较大（中等到大 ES），ML 位移较低（中等到大 ES）。这些结果可能有助于根据性别在表面之间仔细转移跑步步态分析。
