双重任务中的反应性迈步行为与社区居住的老年人跌倒有关：横断面研究

IF 1.4 3区医学 Q4 ENGINEERING, BIOMEDICAL

Clinical Biomechanics Pub Date : 2025-04-24 DOI:10.1016/j.clinbiomech.2025.106536

Hideyuki Tashiro , Sota Hirosaki , Yui Sato , Hikaru Ihira , Megumi Toki , Naoki Kozuka

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引用次数: 0

摘要

背景：我们调查了在社区居住的老年人中，双重任务中的反应性行走是否与跌倒有关。方法在78名健康的社区老年人中，我们评估了单任务和双任务时安静站立稳定性、稳定性极限和反应性行走性能。参与者被用一根倾斜的控制缆绳悬挂在前倾的位置，缆绳的负荷是他们体重的12%，并被指示在释放后通过向前迈一步来恢复平衡。在两种条件下诱发反应性步进：(1)单纯注视前方（单任务条件）和(2)阅读不同颜色书写的颜色名称（双任务条件）。反应性步行表现是通过步行肢体内侧腓肠肌的发病潜伏期和前向平衡丧失后恢复平衡所需的步数来测量的。参与者根据过去12个月的跌倒史被分为跌倒者和非跌倒者。研究结果：22名参与者被归类为“跌倒者”。与单任务条件相比，在双任务条件下，跌倒者和非跌倒者的步数都显著增加。实验组与实验组之间存在交互作用。在控制了年龄、性别、体重、认知功能和对跌倒的担忧后，双重任务中平衡恢复的步数增加与跌倒显著相关。解释：在社区居住的老年人中，在双重任务中恢复平衡所采取的步数与跌倒史独立相关。老年人的跌倒预防策略应包括测量和改善他们在双重任务时对平衡丧失的反应。

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Reactive stepping behavior during dual tasking is related to falls in community-dwelling older adults: A cross-sectional study

Background

We investigated whether reactive stepping during dual tasking is associated with falls in community-dwelling older adults.

Methods

In 78 healthy community-dwelling older adults, we evaluated quiet standing stability, limits of stability, and reactive stepping performance during single and dual tasking. Participants were suspended in a forward-leaning position using a lean control cable with a load of 12 % of their body weight and were instructed to regain balance upon release by taking steps forward. Reactive stepping was induced under two conditions: (1) simple front-fixed gaze (single-task condition) and (2) reading color names written in different colors (dual-task condition). Reactive stepping performance was measured using the onset latency of the medial gastrocnemius of the stepping limb and the number of steps required to recover balance after forward balance loss. Participants were classified as fallers or non-fallers based on fall history during the past 12 months.

Findings

Twenty-two participants were classified as fallers. Both fallers and non-fallers exhibited a significantly increased number of steps during dual-tasking compared to the single-task condition. An interaction between group and condition was observed. The increased number of steps to balance recovery from forward balance loss during dual-tasking was significantly associated with falls after controlling for age, sex, body mass, cognitive function, and concerns about falling.

Interpretation

The number of steps taken to recover balance during dual-tasking was independently related to fall history in community-dwelling older adults. Fall prevention strategies for older adults should include measuring and improving their response to balance loss while dual tasking.

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来源期刊

Clinical Biomechanics 医学-工程：生物医学

CiteScore

3.30

自引率

5.60%

发文量

189

审稿时长

12.3 weeks

期刊介绍： Clinical Biomechanics is an international multidisciplinary journal of biomechanics with a focus on medical and clinical applications of new knowledge in the field. The science of biomechanics helps explain the causes of cell, tissue, organ and body system disorders, and supports clinicians in the diagnosis, prognosis and evaluation of treatment methods and technologies. Clinical Biomechanics aims to strengthen the links between laboratory and clinic by publishing cutting-edge biomechanics research which helps to explain the causes of injury and disease, and which provides evidence contributing to improved clinical management. A rigorous peer review system is employed and every attempt is made to process and publish top-quality papers promptly. Clinical Biomechanics explores all facets of body system, organ, tissue and cell biomechanics, with an emphasis on medical and clinical applications of the basic science aspects. The role of basic science is therefore recognized in a medical or clinical context. The readership of the journal closely reflects its multi-disciplinary contents, being a balance of scientists, engineers and clinicians. The contents are in the form of research papers, brief reports, review papers and correspondence, whilst special interest issues and supplements are published from time to time. Disciplines covered include biomechanics and mechanobiology at all scales, bioengineering and use of tissue engineering and biomaterials for clinical applications, biophysics, as well as biomechanical aspects of medical robotics, ergonomics, physical and occupational therapeutics and rehabilitation.