Sports Physical Therapy Laboratory, Department of Physical Education and Sports Science, School of Physical Education and Sports Science, National and Kapodistrian University of Athens, 17237 Athens, Greece.
Sensors (Basel). 2022 Apr 5;22(7):2790. doi: 10.3390/s22072790.
Modern technology has enabled researchers to analyze gait with great accuracy and in various conditions based on the needs of the trainees. The purpose of the study was to investigate the agreement between systems equipped with optical and capacitive sensors in the analysis of treadmill-based level and sloping gait. The spatiotemporal parameters of gait were measured in 30 healthy college-level students during barefoot walking on 0% (level), -10% and -20% (downhill) and +10% and +20% (uphill) slopes at hiking-related speeds using an optoelectric cell system and an instrumented treadmill. Inter-system agreement was assessed using the Intraclass Correlation Coefficients (ICCs) and the 95% limits of agreement. Our findings revealed excellent ICCs for the temporal and between moderate to excellent ICCs for the spatial parameters of gait. Walking downhill and on a 10% slope demonstrated better inter-system agreement compared to walking uphill and on a 20% slope. Inter-system agreement regarding the duration of gait phases was increased by increasing the number of LEDs used by the optoelectric cell system to detect the contact event. The present study suggests that systems equipped with optical and capacitive sensors can be used interchangeably in the treadmill-based spatiotemporal analysis of level and sloping gait.
现代技术使研究人员能够根据受训者的需求，非常准确地在各种条件下分析步态。本研究旨在调查配备光学和电容传感器的系统在分析跑步机上水平和倾斜步态时的一致性。使用光电传感器系统和带仪器的跑步机，以与徒步旅行相关的速度，在 30 名健康大学生赤脚行走于 0%（水平）、-10%和-20%（下坡）以及+10%和+20%（上坡）坡度时，测量了步态的时空参数。使用组内相关系数（ICCs）和 95%一致性界限评估了系统间的一致性。我们的研究结果显示，步态的时间参数具有极好的 ICC，空间参数具有从中等到极好的 ICC。与上坡和 20%坡度相比，下坡和 10%坡度的步行表现出更好的系统间一致性。通过增加光电传感器系统用于检测接触事件的 LED 数量，步态各阶段持续时间的系统间一致性得到提高。本研究表明，配备光学和电容传感器的系统可在跑步机上的水平和倾斜步态时空分析中互换使用。
