Effect of Unweighting Assistance on Sit-to-Stand Mechanics in Healthy Older Adults

IF 0.3 Q4 REHABILITATION

PHYSICAL & OCCUPATIONAL THERAPY IN GERIATRICS Pub Date : 2020-05-13 DOI:10.1080/02703181.2020.1762825

Kelsey L. Piersol, B. Riemann

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引用次数: 1

Abstract

Abstract Aims: To assess the specificity of assistance provided by a sit-to-stand training device compared to unassisted sit-to-stand by quantifying the change in kinematic strategies and joint kinetic demands with decreasing assistance. Methods: Participants completed the sit-to-stand transfer at 5 randomized assistance levels (unassisted; 40%, 50%, 60%, and 70% body mass) using a sit-to-stand trainer while kinematic and ground reaction force data were collected. Results: Increasing assistance significantly increased total movement time (P = .009, 95% CIdiff = .46 to1.2s), shifted key events earlier (P < .002, 95% CIdiff = 2.0 to10.4%), decreased joint flexion angles (P < .001, 95% CIdiff = 2.4 to 8.2°), and decreased trunk flexion angular momentum (P < .001, 95% CIdiff = .01 to .09 kg•m2/s).). Increasing assistance had the greatest effect on the hip joint, with decreases in peak net joint moment (P < .001, d = 1.8) and angular work (P < .001, d = 2.2). Conclusions: As assistance decreased, mechanics while using the device became more similar to an unassisted sit-to-stand, suggesting promising use for progressive rehabilitation.

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减重辅助对健康老年人坐立力学的影响

摘要目的:通过量化运动策略和关节动力学需求随辅助减少的变化，评估坐立训练装置提供的辅助与无辅助坐立训练装置的特异性。方法:参与者在5个随机辅助水平下完成坐姿到站立的转换(无辅助;40%， 50%， 60%和70%的身体质量)，使用坐立训练器，同时收集运动学和地面反作用力数据。结果:增加辅助可显著增加总运动时间(P =。009, 95% CIdiff =。46 ~ 1.2s)，键事件移位较早(P <。002, 95% CIdiff = 2.0 ~ 10.4%)，关节屈曲角度降低(P <。0.001, 95% CIdiff = 2.4 ~ 8.2°)，躯干屈曲角动量降低(P < 0.05)。001, 95% CIdiff =。01 ~ 0.09 kg•m2/s)。增加辅助对髋关节的影响最大，峰值净关节力矩降低(P < 0.05)。001, d = 1.8)和角功(P <。001, d = 2.2)。结论:随着辅助的减少，使用该装置时的力学变得更类似于无辅助的坐转站，这表明有希望用于渐进式康复。

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

PHYSICAL & OCCUPATIONAL THERAPY IN GERIATRICS REHABILITATION-

CiteScore

1.30

自引率

0.00%

发文量

期刊介绍： This comprehensive journal is recognized for its useful balance of research and clinical practice articles. For more than twenty five years Physical & Occupational Therapy in Geriatrics has functioned as a forum for allied health professionals as well as others with a focus on rehabilitation of the geriatric client to share information, clinical experience, research, and therapeutic practice. Each issue focuses on current practice and emerging issues in the care of the older client, including rehabilitation and long-term care in institutional and community settings, and innovative programming; the entire range of problems experienced by the elderly; and the current skills needed for working with older clients.