抗血栓压力袜系统：性能评估。

DAid pressure socks system: Performance evaluation.

机构信息

Institute of Biomedical Engineering and Nanotechnology, Riga Technical University, Riga, Latvia.

出版信息

Gait Posture. 2021 Feb;84:368-376. doi: 10.1016/j.gaitpost.2021.01.007. Epub 2021 Jan 14.

DOI:10.1016/j.gaitpost.2021.01.007

PMID:33476830

Abstract

BACKGROUND

Plantar pressure measurement has been proven to produce crucial information for gait analysis. Socks with integrated textile pressure sensors are a promising tool for non-obtrusive plantar pressure acquisition and monitoring.

RESEARCH QUESTION

Can the DAid Pressure Socks System be employed for the measurement of plantar pressure and temporal parameters during walking?

METHOD

Plantar pressure measurement was acquired simultaneously by the DAid Pressure Socks System (DPSS) and Pedar® insole measurement system for a normal walking gait of 17 volunteers. The measurement from both systems was processed and gait temporal parameters were calculated. The calculated temporal parameters included stride time, step time, stance time, swing time, single support time, double support time, and cadence. The Intraclass Correlation Coefficient (ICC) was calculated to evaluate the agreement between the plantar pressure measurement and temporal parameters obtained from both systems.

RESULTS

For plantar pressure measurement, excellent agreement (ICC > 0.90) was achieved in approximately 23 % cases, while in roughly 37 %, 27 %, and 13 % cases the agreement was good (ICC > 0.75), moderate (ICC > 0.50), and poor (ICC < 0.50), respectively. The mean relative differences (as a percentage) between the temporal parameter values calculated from the measurement of both systems were 0.80 % (stride time), 3.06 % (step time), 3.15 % (stance time), 5.08 % (swing time / opposite single support time), 14.47 % (double support time), and 0.78 % (cadence).

SIGNIFICANCE

The ICC result calculated for the plantar pressure measurement indicated a reasonable agreement between both systems. Additionally, the relatively low mean difference was observed for 5 out of 6 calculated temporal gait parameters. Consequently, the presented DPSS could be considered as a substitute for the commercial gait analysis tools for applications that do not require great accuracy of the absolute plantar pressure measurement.

摘要

背景

足底压力测量已被证明可以为步态分析提供关键信息。带有集成纺织压力传感器的袜子是一种非侵入式足底压力采集和监测的有前途的工具。

研究问题

DAid 压力袜系统能否用于测量行走时的足底压力和时间参数？

方法

17 名志愿者进行正常行走步态时，同时使用 DAid 压力袜系统（DPSS）和 Pedar®鞋垫测量系统采集足底压力测量值。对两种系统的测量值进行处理，并计算步态时间参数。计算出的时间参数包括步幅时间、步长时间、站立时间、摆动时间、单支撑时间、双支撑时间和步频。计算了组内相关系数（ICC）以评估两种系统获取的足底压力测量值和时间参数之间的一致性。

结果

对于足底压力测量，大约 23%的情况下达到了极好的一致性（ICC>0.90），大约 37%、27%和 13%的情况下一致性较好（ICC>0.75）、中等（ICC>0.50）和较差（ICC<0.50）。两种系统计算出的时间参数值之间的平均相对差异（百分比）分别为 0.80%（步幅时间）、3.06%（步长时间）、3.15%（站立时间）、5.08%（摆动时间/相反的单支撑时间）、14.47%（双支撑时间）和 0.78%（步频）。