健康的老年人在行走时产生 90° 转弯所需的横向平面力矩,其步态阶段与直线步态相同。

IF 5.2 2区 医学 Q1 ENGINEERING, BIOMEDICAL
Mitchell Tillman, Jun Ming Liu, Zahava M Hirsch, Janine Molino, Antonia M Zaferiou
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引用次数: 0

摘要

背景:线性和角度动量的产生和调节(控制)是步行转弯过程中的一项挑战,而与年龄有关的变化可能会加剧这一挑战。在健康的老年人中,人们对转弯时如何控制动量知之甚少,尤其是在步态的每个阶段。步态的每个阶段都提供了控制动量和调节平衡的独特机械环境。在健康的青壮年身上,我们发现在直线步态的特定步态阶段中观察到的横向平面线性和角动量产生策略在转弯时也同样适用。因此,在本研究中,我们调查了健康的老年人在直线步态和转弯时是否共享类似的各步态阶段特有的动量控制策略:方法:9 名健康的老年人完成了直线步态和 90° 左转行走。我们比较了不同步态阶段(左右单支撑和双支撑)横向平面全身线性动量和角动量的变化。我们还比较了不同步态阶段的平均左向力和横向平面力矩:结果:我们发现,在直线步态和向左转弯时,右单支撑产生的左向线动量最大。然而,与直线步态不同的是,在向左转弯时,各步态阶段都施加了平均向左力,左单支撑产生的平均向左力明显小于其他步态阶段。在这两项任务中,左双支撑时产生的向左角动量和平均力矩最大。我们观察到一些参与者内部的结果与群体统计结果不一致,这说明尽管它们很常见,但这些力矩控制策略并非必要:结论:老年人在直线步态和 90° 转体时会在步态的一致阶段产生横向平面线性动量和角度动量,这可能表明存在一种共同的控制策略。了解步态各阶段的动量控制有助于在步态和平衡训练干预中设计更具体的目标。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Healthy older adults generate transverse-plane momenta required for 90° turns while walking during the same phases of gait as used in straight-line gait.

Background: Generation and regulation (control) of linear and angular momentum is a challenge during turning while walking which may be exacerbated by age-related changes. In healthy older adults, little is known about how momentum is controlled during turns, especially within each phase of gait. Each phase of gait affords unique mechanical contexts to control momenta and regulate balance. In healthy young adults, we found that the transverse-plane linear and angular momenta generation strategies observed within specific phases of gait during straight-line gait were also used during turns. Therefore, in this study, we investigated whether healthy older adults shared similar momentum control strategies specific to each gait phase during straight-line gait and turns.

Methods: Nine healthy older adults completed straight-line gait and 90° leftward walking turns. We compared the change in transverse-plane whole-body linear and angular momentum across gait phases (left and right single and double support). We also compared the average leftward force and transverse-plane moment across gait phases.

Results: We found that leftward linear momentum was generated most during right single support in straight-line gait and leftward turns. However, in contrast to straight-line gait, during leftward turns, average leftward force was applied across gait phases, with left single support generating significantly less leftward average force than other gait phases. Leftward angular momentum generation and average moment were greatest during left double support in both tasks. We observed some within-participant results that diverged from the group statistical findings, illustrating that although they are common, these momenta control strategies are not necessary.

Conclusions: Older adults generated transverse-plane linear and angular momentum during consistent phases of gait during straight-line gait and 90° turns, potentially indicating a shared control strategy. Understanding momentum control within each phase of gait can help design more specific targets in gait and balance training interventions.

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来源期刊
Journal of NeuroEngineering and Rehabilitation
Journal of NeuroEngineering and Rehabilitation 工程技术-工程:生物医学
CiteScore
9.60
自引率
3.90%
发文量
122
审稿时长
24 months
期刊介绍: Journal of NeuroEngineering and Rehabilitation considers manuscripts on all aspects of research that result from cross-fertilization of the fields of neuroscience, biomedical engineering, and physical medicine & rehabilitation.
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