估计压力中心的有效性,从一个三传感器无线内底行走和运行时与脚部负荷从三传感器无线内底估计压力中心的有效性
Richard A Brindle1,2, Chris M Bleakley1,3, Jeffrey B Taylor1
1Department of Physical Therapy, High Point University, High Point, North Carolina, USA.
Wearable technologies
|March 15, 2024
概括
负载底内在走路和跑步时提供与Pedar内相比较的压力中心 (COP) 估计. 在中位期间,在5mm (中侧) 和20mm (前后) 范围内发现了一致性,尽管在初始接触和脚脱落附近存在偏差.
科学领域:
- 生物力学 生物力学
- 运动医学 运动医学
- 步态分析 步态分析
背景情况:
- 准确的压力中心 (COP) 测量对于理解步态动态至关重要.
- 脚部压力内 (例如Pedar) 是一个黄金标准,但像强力内 (例如Loadsol) 这样的替代技术正在出现.
- 对新技术与既定方法的验证对于它们在研究和临床实践中的采用至关重要.
研究的目的:
- 为了评估COP估计的可比性,从Loadsol强力内与Pedar压力内中得出.
- 为了评估Loadsol在走路和跑步时的中侧 (COPx) 和前后 (COPy) COP估计的准确性.
主要方法:
- 十个健康的成年人在跑步机上进行了步行和跑步试验.
- 参与者在他们的右鞋中穿着Loadsol和Pedar两种内.
- 来自Loadsol (根据力估计) 和Pedar (直接压力测量) 的COP数据使用Bland-Altman分析和Spearman相关性进行了比较.
主要成果:
- 在20-40%的立场阶段,在COPx (5毫米以内) 和COPy (20毫米以内) 之间观察到Loadsol和Pedar之间存在显著的协议.
- 与Pedar相比,Loadsol显示了系统的偏差:COPx为7毫米,COPy为10毫米,特别是在初始接触和脚脱落时.
- 无论是走路还是跑步条件,都产生了类似的协议模式.
结论:
- 负载底内提供了一个可行的替代方案,用于估计COP在走路的中位阶段.
- 用户应该意识到Loadsol在立场阶段的开始和结束附近的COP估计中的潜在偏差.
- 进一步的研究可能会改进Loadsol算法,以减轻观察到的偏差,从而提高整个步行周期的准确性.
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