Comparison of the optoelectronic BTS Smart system and IMU-based MyoMotion system for the assessment of gait variables.

IF 0.8 4区医学 Q4 BIOPHYSICS

Acta of bioengineering and biomechanics Pub Date : 2022-01-01

Amadeusz Bartoszek, Artur Struzik, Sebastian Jaroszczuk, Marek Woźniewski, Bogdan Pietraszewski

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引用次数: 0

Abstract

Purpose: Although inertial measurement unit (IMU)-based systems have been validated against optoelectronic systems for recording joint kinematics, the accuracy of each system must be evaluated, and measurements from different systems cannot be easily compared. Therefore, this study compared the joint angles recorded using the IMU-based MyoMotion system and the optoelectronic BTS Smart-DX 700 system during Nordic walking.

Methods: The study subject, a long-time Nordic walking instructor, was assigned to walk 12 m/trial (14 trials with 5 sampled gait cycles) at a velocity preferred for Nordic walking. The trials were simultaneously recorded by both systems. The instantaneous lower (ankle, knee, hip) and upper (shoulder, elbow, wrist) limb joint angles were recorded.

Results: The joint angles from MyoMotion were significantly larger or smaller (depending on the joint and plane) than those from BTS.

Conclusions: Joint angles measured by MyoMotion are not interchangeable with values from BTS, and IMU-recorded values should be interpreted carefully. However, MyoMotion can still provide information about intra-individual changes based on the joint angle profiles, e.g., following Nordic walking training.

本刊更多论文

光电 BTS Smart 系统与基于 IMU 的 MyoMotion 系统在步态变量评估方面的比较。

目的：尽管基于惯性测量单元（IMU）的系统与光电系统在记录关节运动学方面进行了验证，但必须对每个系统的准确性进行评估，而且不同系统的测量结果不易比较。因此，本研究比较了使用基于 IMU 的 MyoMotion 系统和光电 BTS Smart-DX 700 系统在北欧式行走过程中记录的关节角度：研究对象是一名长期从事北欧式行走的教练，他被指定以北欧式行走的首选速度行走 12 米/次（14 次试验，5 个采样步态周期）。试验由两个系统同时记录。记录瞬时下肢（踝关节、膝关节、髋关节）和上肢（肩关节、肘关节、腕关节）关节角度：结果：MyoMotion 测量的关节角度明显大于或小于 BTS 测量的关节角度（取决于关节和平面）：结论：MyoMotion 测得的关节角度不能与 BTS 测得的值互换，应谨慎解释 IMU 记录的值。不过，MyoMotion 仍能根据关节角度曲线提供个体内部变化的信息，例如北欧式行走训练后的变化。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Acta of bioengineering and biomechanics BIOPHYSICS-ENGINEERING, BIOMEDICAL

CiteScore

2.10

自引率

10.00%

发文量

期刊介绍： Acta of Bioengineering and Biomechanics is a platform allowing presentation of investigations results, exchange of ideas and experiences among researchers with technical and medical background. Papers published in Acta of Bioengineering and Biomechanics may cover a wide range of topics in biomechanics, including, but not limited to: Tissue Biomechanics, Orthopedic Biomechanics, Biomaterials, Sport Biomechanics.