学生竞赛(科技创新) ID 1986855

IF 2.4 Q1 REHABILITATION Topics in Spinal Cord Injury Rehabilitation Pub Date : 2023-09-01 DOI:10.46292/sci23-1986855s
Ramin Fathian, A. Khandan, Chester Ho, Hossein Rouhani
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引用次数: 0

摘要

多达 70% 的脊髓损伤(SCI)患者在其一生中都会经历肩部损伤。以往的研究表明,肩部受伤的风险与使用 SMARTWheel 或实验室运动捕捉系统测量的推进相关运动和运动学参数之间存在联系。尽管这些系统具有很高的准确性,但需要耗费大量的时间和人力,而且并不常见。 目的是开发并验证一种便携、易用的方法,利用手部安装的惯性测量单元(IMU)估算推动阶段的持续时间。 10 名志愿者(7 男 3 女,年龄:28 ± 2 岁)同意参与研究。参与者坐在装有 SMARTWheel(采样频率:240 Hz)的仪器轮椅上时,将 IMU(三维加速度和角速度,采样频率:512 Hz)安装在右手上。当参与者推动轮椅时,SMARTWheel 和 IMU 读数被采集。从 IMU 获得的加速度和连续小波变换系数的峰值用于识别手的接触和释放,并估算推动阶段的持续时间。 与 SMARTWheel 相比,使用 IMU 估算的手部接触和释放瞬间参数以及推动持续时间的平均误差(标准偏差)分别为 8.4 (15.2) 毫秒、3.8 (22.1) 毫秒和 -4.6 (24.6) 毫秒,没有观察到明显差异(p 值分别为 0.97、0.89 和 0.94)。 这些结果支持使用 IMU 作为实验室内系统的便携式替代方案来估算手动轮椅使用者的推动阶段持续时间的有效性。
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Student Competition (Technology Innovation) ID 1986855
Up to 70% of individuals with spinal cord injury (SCI) experience shoulder injuries during their lifetime. Previous studies revealed a link between the risk of shoulder injury and propulsion-related kinetic and kinematic parameters that were measured using SMARTWheel or in-lab motion-capture systems. Despite their high accuracy, these systems are time and labour intensive and not commonly accessible. To develop and validate a portable and accessible method to estimate the duration of the push phase using a hand-mounted inertial measurement unit (IMU). Ten volunteers (7 males, 3 females, age: 28 ± 2 y.o.) consented to participate in the study. An IMU (3D acceleration and angular velocity, sampling frequency: 512 Hz) was attached to participant’s right hand while sitting on the instrumented wheelchair equipped with SMARTWheel (sampling frequency: 240 Hz). The SMARTWheel and IMU readouts were collected while participants were propelling the wheelchair. The peaks in the resultant acceleration and continuous wavelet transform coefficients obtained from IMU were used to identify the hand contact and release, and estimate the push phase duration. No significant differences (p-value = 0.97, 0.89, and 0.94, respectively) were observed between the parameters obtained for the hand contact and release instants and push duration estimated using IMU compared to SMARTWheel with mean errors (standard deviation) of 8.4 (15.2) ms, 3.8 (22.1) ms and −4.6 (24.6) ms, respectively. These findings support the validity of using IMU as a portable alternative to the in-lab systems to estimate the push phase duration of manual wheelchair users.
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来源期刊
CiteScore
3.20
自引率
3.40%
发文量
33
期刊介绍: Now in our 22nd year as the leading interdisciplinary journal of SCI rehabilitation techniques and care. TSCIR is peer-reviewed, practical, and features one key topic per issue. Published topics include: mobility, sexuality, genitourinary, functional assessment, skin care, psychosocial, high tetraplegia, physical activity, pediatric, FES, sci/tbi, electronic medicine, orthotics, secondary conditions, research, aging, legal issues, women & sci, pain, environmental effects, life care planning
期刊最新文献
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