Turning speed as a more responsive metric of age-related decline in mobility: A comparative study with gait speed

IF 1.4 3区医学 Q4 ENGINEERING, BIOMEDICAL

Clinical Biomechanics Pub Date : 2024-02-05 DOI:10.1016/j.clinbiomech.2024.106196

Angela R. Weston , Keith R. Lohse , Andrew Kittelson , Laurie A. King , Patty Carlson-Kuhta , Leland E. Dibble , Martina Mancini

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引用次数: 0

Abstract

Background

Navigating your environment requires both straight-line gait as well as turning. Gait speed normative values are well established and utilized in determining a person's functional status, however, it has limitations. This study sought to examine whether turning speed declines with age and how it compared to gait speed age-related decline.

Methods

A secondary analysis was performed on 275 community dwelling adults between the ages of 18–88 that performed a timed walking test with an inertial measurement unit on their lumbar spine. Turning speed and walking speed were extracted for each participant. A series of mixed models were compared, and Akaike's Information Criterion was used to determine the best fit model between age and turning speed and age and gait speed.

Findings

Turning speed and gait speed normative values were reported for each age decade. A linear model with a random intercept of “Condition” was used to assess the relationship between age and turning speed. The results indicated a significant negative relationship between age and turning speed (B = -0.66, p < 0.001). A spline-fit model determined a significant negative relationship between age and gait speed after the age of 65 (B = -0.0097, p = 0.002). The effect of age on gait speed before age 65 was not significant.

Interpretation

Turning speed significantly declines with age in a linear fashion while gait speed begins to decline after age 65. Turning speed may be more responsive to age than gait speed. More research is needed to determine if the decline in turning speed with age is associated with a decline in function.

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转弯速度是衡量与年龄有关的行动能力下降的更灵敏的指标：与步速的比较研究

背景导航需要直线步态和转弯。步态速度常模值已被确定并用于判断一个人的功能状态，但它也有局限性。本研究试图考察转弯速度是否会随着年龄的增长而下降，以及转弯速度与步态速度年龄相关下降的比较情况。方法对 275 名年龄在 18-88 岁之间的社区居民进行了二次分析，他们在腰椎上使用惯性测量装置进行了定时步行测试。提取了每位参与者的转弯速度和行走速度。对一系列混合模型进行了比较，并使用阿凯克信息标准来确定年龄与转弯速度和年龄与步速之间的最佳拟合模型。采用随机截距为 "条件 "的线性模型来评估年龄与转弯速度之间的关系。结果表明，年龄与转弯速度之间存在明显的负相关（B = -0.66，p <0.001）。根据样条拟合模型，65 岁以后的年龄与步速之间存在明显的负相关（B = -0.0097，p = 0.002）。65 岁之前，年龄对步速的影响并不显著。与步态速度相比，转弯速度对年龄的反应可能更大。还需要更多的研究来确定转弯速度随年龄的增长而下降是否与功能下降有关。

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

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.