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手臂力量:增强老年人预防滑倒和跌倒的能力——一种理论视角

Strength in arms: empowering older adults against the risk of slipping and falling-a theoretical perspective.

作者信息

Lee-Confer Jonathan

机构信息

Department of Physical Therapy, University of Arizona, Tucson, AZ, United States.

出版信息

Front Sports Act Living. 2024 Mar 8;6:1371730. doi: 10.3389/fspor.2024.1371730. eCollection 2024.

Abstract

BACKGROUND

Slips and falls are a serious health concern, particularly among older adults. Current physical therapy protocols strengthen the legs to improve balance. However, arm movements help maintain balance during a slip incident. Understanding how arm movements improve balance may help clinicians develop more comprehensive fall-prevention protocols to improve patient outcomes.

CLINICAL QUESTION

What limitations exist in current fall prevention protocols for reducing falls in older adults during slip incidents, and what new strategies can enhance these outcomes?

KEY RESULTS

Slip incidents often result in a sideways loss of balance, leading to hip fractures in older adults. During a slip, the legs do not produce sideways motion and are less effective in regaining balance in this direction. Contrary, the arms produce 100 + degrees of abduction and this motion reduces falls by 200%+ during a slip incident. Notably, older adults exhibit 35.7% decreased arm abduction acceleration responses compared to younger adults during a slip incident. This delay may be attributed to age-related decreases in type II fibers of the deltoid. High-velocity and ballistic training have been shown to improve the proportion and size of type II fibers as well as improve fall outcomes when focused on the lower extremities.

CLINICAL APPLICATION

Therefore, I propose incorporating arm abductor training, alongside leg exercises, as a cost-effective and low-risk intervention to enhance the slip responses in older adults. In light of its minimal risk and considerable potential benefits, starting arm abductor exercises with older adults is a sensible move.

摘要

背景

滑倒是一个严重的健康问题,在老年人中尤为如此。目前的物理治疗方案通过增强腿部力量来改善平衡。然而,在滑倒事件中,手臂动作有助于维持平衡。了解手臂动作如何改善平衡可能有助于临床医生制定更全面的预防跌倒方案,以改善患者预后。

临床问题

目前预防老年人在滑倒事件中跌倒的方案存在哪些局限性,有哪些新策略可以提高这些效果?

关键结果

滑倒事件通常会导致侧向失去平衡,从而导致老年人髋部骨折。在滑倒过程中,腿部不会产生侧向运动,在这个方向上恢复平衡的效果较差。相反,手臂会产生100多度的外展,这种动作在滑倒事件中可使跌倒减少200%以上。值得注意的是,在滑倒事件中,与年轻人相比,老年人的手臂外展加速度反应降低了35.7%。这种延迟可能归因于三角肌II型纤维随年龄增长而减少。高速和弹道训练已被证明可以改善II型纤维的比例和大小,并且当专注于下肢时可以改善跌倒结果。

临床应用

因此,我建议将手臂外展训练与腿部锻炼相结合,作为一种经济有效且低风险的干预措施,以增强老年人的滑倒反应。鉴于其风险极小且潜在益处显著,让老年人开始进行手臂外展锻炼是明智之举。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/66f4/10957654/32b27df6e17e/fspor-06-1371730-g001.jpg

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