Age-Related Reduction of Foot Intrinsic Muscle Function and the Relationship with Postural Stability in Old Adults

IF 3.6 3区医学

Clinical Interventions in Aging Pub Date : 2024-06-04 DOI:10.2147/cia.s454068

Jiayi Wang, Yuanyuan Wang, Bangguo Zhou, Lin Wang, Zhangqi Lai

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Abstract

Introduction: The risk of falls among the elderly significantly increases, which has become a serious public health concern. Falls can not only lead to serious complications such as fractures and brain injuries but also limit their mobility function, reducing quality of life. Foot intrinsic muscles (FIMs) are an essential part of foot core stability even overall postural stability. This study aimed to investigate the effects of aging on the function of FIMs and to explore the influence of FIMs on postural control in the elderly.
Materials and Methods: 56 healthy old participants (60– 75 years) and 57 healthy young participants (18– 29 years) joined this study. An ergoFet dynamometer was used to determine foot muscle strength (Doming, T₁, T₂₃ and T₂₃₄₅), and ankle muscle strength (plantarflexion and dorsiflexion). The morphology of FIMs and extrinsic foot muscle was determined using a Doppler ultrasound system, whereas the postural stability was assessed through Limits of Stability test. Independent samples t-test was used to determine the differences in strength and morphological parameters and Spearman correlation analysis was used to determine whether an association existed between muscle strength and postural stability parameters in the elderly.
Results: Compared with young adults, foot muscle strength and ankle muscle strength (Doming, T₁, T₂₃, T₂₃₄₅, dorsiflexion, and plantarflexion, all p < 0.05) and the morphology of foot muscles (all p < 0.05) were significantly reduced in the elderly. The strength of FIMs and the limit of stability (r = 0.302– 0.424, all p < 0.05) were significantly correlated in the elderly.
Conclusion: Compared with young adults, the weakness of strength as well as the morphological decline of the intrinsic and extrinsic foot muscles were found in the elderly. In addition, a correlation was observed between FIM’s strength and postural stability in the elderly, suggesting their potential role in posture stability.

Keywords: postural stability, aging, foot core system, fall, foot intrinsic muscle, FIMs

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与年龄有关的老年人足部内在肌肉功能下降及其与姿势稳定性的关系

引言老年人跌倒的风险大大增加，这已成为一个严重的公共卫生问题。跌倒不仅会导致骨折和脑损伤等严重并发症，还会限制老年人的活动功能，降低生活质量。足部固有肌（FIMs）是足部核心稳定性乃至整体姿势稳定性的重要组成部分。本研究旨在调查衰老对 FIMs 功能的影响，并探讨 FIMs 对老年人姿势控制的影响。使用 ergoFet 测功机测定足部肌力（Doming、T1、T23 和 T2345）和踝部肌力（跖屈和背屈）。使用多普勒超声系统测定了足内肌和足外肌的形态，并通过 "稳定性极限 "测试评估了姿势稳定性。采用独立样本 t 检验确定强度和形态参数的差异，并采用斯皮尔曼相关分析确定老年人的肌肉强度和姿势稳定性参数之间是否存在关联：与青壮年相比，老年人的足部肌力和踝部肌力（Doming、T1、T23、T2345、背屈和跖屈，均为p <0.05）以及足部肌肉形态（均为p <0.05）明显降低。结论：与青壮年相比，老年人的足部肌肉力量和稳定性极限（r = 0.302- 0.424，均为 p < 0.05）有明显的相关性：结论：与青壮年相比，老年人足部内在和外在肌肉的力量减弱、形态下降。此外，在老年人中观察到 FIM 的强度与姿势稳定性之间存在相关性，表明其在姿势稳定性中的潜在作用。关键词：姿势稳定性；衰老；足部核心系统；跌倒；足部固有肌；FIMs

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来源期刊

Clinical Interventions in Aging GERIATRICS & GERONTOLOGY-

CiteScore

6.20

自引率

2.80%

发文量

193

期刊介绍： Clinical Interventions in Aging, is an online, peer reviewed, open access journal focusing on concise rapid reporting of original research and reviews in aging. Special attention will be given to papers reporting on actual or potential clinical applications leading to improved prevention or treatment of disease or a greater understanding of pathological processes that result from maladaptive changes in the body associated with aging. This journal is directed at a wide array of scientists, engineers, pharmacists, pharmacologists and clinical specialists wishing to maintain an up to date knowledge of this exciting and emerging field.