Kozinc Žiga, Smajla Darjan, Šarabon Nejc
Faculty of Health Sciences, University of Primorska, Izola, Slovenia.
Andrej Marušič Institute, University of Primorska, Koper, Slovenia.
Sports Biomech. 2024 Nov;23(11):2330-2343. doi: 10.1080/14763141.2021.2022746. Epub 2022 Jan 12.
The aim of this study was to investigate the reliability of running biomechanics assessment with a wearable commercial sensor (RunScribe). Participants performed multiple 200-m runs over sand, grass and asphalt ground at the estimated 5-km tempo, with an additional trial with 21-km tempo at the asphalt. Intra-session reliability was excellent for all variables at 5-km pace (intra-class coefficient correlation (ICC) asphalt: 0.90-0.99; macadam: 0.94-1.00; grass: 0.92-1.00), except for shock (good; ICC = 0.83), and contact time and total power output (moderate; ICC = 0.68-0.71). Coefficient of variation (CV) were mostly acceptable in all conditions, except for horizontal ground reaction force (GRF) rate in asphalt 5-km pace trial (CV = 24.5 %), power (CV = 14.3 %) and foot strike type (CV = 30.9 %) in 21-km pace trial, and horizontal GRF rate grass trial (CV = 15.7 %). Inter-session reliability was high or excellent for the majority of the outcomes (ICC≥0.85). Total power output (ICC = 0.56-0.65) and shock (ICC = 0.67-0.75) showed only moderate reliability across all conditions. Power (CV = 12.5-13.8 %), foot strike type (CV = 14.9-29.4 %) and horizontal ground reaction force rate (CV = 12.4-36.4 %) showed unacceptable CV.
本研究的目的是调查使用可穿戴商业传感器（RunScribe）进行跑步生物力学评估的可靠性。参与者以估计的5公里配速在沙地、草地和沥青地面上进行多次200米跑步，并在沥青地面上以21公里配速进行一次额外测试。在5公里配速下，所有变量的组内可靠性都非常好（组内相关系数（ICC）：沥青地面为0.90 - 0.99；碎石地面为0.94 - 1.00；草地为0.92 - 1.00），除了冲击（良好；ICC = 0.83）以及接触时间和总功率输出（中等；ICC = 0.68 - 0.71）。除了沥青地面5公里配速测试中的水平地面反作用力（GRF）率（CV = 24.5%）、21公里配速测试中的功率（CV = 14.3%）和脚着地类型（CV = 30.9%）以及草地测试中的水平GRF率（CV = 15.7%）外, 变异系数（CV）在所有条件下大多是可接受的。大多数结果的组间可靠性较高或非常好（ICC≥0.85）。总功率输出（ICC = 0.56 - 0.65）和冲击（ICC = 0.67 - 0.75）在所有条件下仅显示中等可靠性。功率（CV = 12.5 - 13.8%）、脚着地类型（CV = 14.9 - 29.4%）和水平地面反作用力率（CV = 12.4 - 36.4%）显示出不可接受的CV。
