Mathunny Jaison Jacob, S Hari Krishnan, Devaraj Ashokkumar, Karthik Varshini
Department of Biomedical Engineering, SRM Institute of Science and Technology, Kattankulathur 603203, Tamil Nadu, India.
Appl Bionics Biomech. 2024 Mar 29;2024:3622556. doi: 10.1155/2024/3622556. eCollection 2024.
This study proposes a mecanum-built perturbation-based balance training device aimed at improving motor adaptive skills for fall prevention in individuals with neurological disorders or the elderly. Incorporating multidirectional fall simulations in line with modified constraint-induced movement therapy, the device's efficacy was evaluated by measuring the distance traveled and peak acceleration under different static loads (20, 30, and 40 kg) and input accelerations (1, 2, and 3 m/s). A pilot study with 10 subjects was conducted to assess device performance, utilizing repeated measures analysis of variance and Bonferroni's post hoc analysis. Results indicated a load-dependent reduction in distance traveled, with an average mean difference of 0.74-1.23 cm between the 20 and 40 kg loads for trials of 9 and 18 cm, respectively. Despite varying loads, the device consistently achieved near-anticipated peak accelerations, suggesting its capability to induce effective perturbations. The study also observed a significant lateral movement preference, suggesting adjustments to pulse width modulation and time period may optimize lateral movement performance.
本研究提出了一种基于麦克纳姆轮构建的基于扰动的平衡训练装置，旨在提高患有神经系统疾病的个体或老年人预防跌倒的运动适应技能。该装置结合了符合改良约束诱导运动疗法的多方向跌倒模拟，通过测量在不同静态负载（20、30和40千克）和输入加速度（1、2和3米/秒）下的行进距离和峰值加速度来评估其功效。对10名受试者进行了一项初步研究以评估装置性能，采用重复测量方差分析和邦费罗尼事后分析。结果表明，行进距离随负载增加而减少，在9厘米和18厘米的试验中，20千克和40千克负载之间的平均平均差异分别为0.74 - 1.23厘米。尽管负载不同，该装置始终能达到接近预期的峰值加速度，表明其能够诱导有效的扰动。研究还观察到明显的横向运动偏好，表明调整脉宽调制和时间段可能会优化横向运动性能。
