Jiménez-García José Daniel, Martínez-Amat Antonio, Hita-Contreras Fidel, Fábrega-Cuadros Raquel, Álvarez-Salvago Francisco, Aibar-Almazán Agustín
MOVE-IT Research Group and Department of Physical Education, Faculty of Education Sciences, University of Cádiz, 11003 Cádiz, Spain.
Department of Health Sciences, Faculty of Health Sciences, University of Jaén, 23071 Jaén, Spain.
Int J Environ Res Public Health. 2021 May 31;18(11):5893. doi: 10.3390/ijerph18115893.
Functional mobility and muscle strength are well known risk factors for sarcopenia. Furthermore, possible associations have been suggested between predisposing factors of sarcopenia and reaction time among the elderly. This study aims to analyze possible associations of functional mobility and muscle strength and reaction times in a population of people aged >60 years.
A total of 290 older people (69.35 ± 5.55 years) participated in this study. The following parameters were assessed: optoacoustic lower-limb reaction time (OALLRT); acoustic lower-limb reaction time (ALLRT); optic lower-limb reaction time (OLLRT, using an optical detection system), functional mobility (through the timed up-and-go test) and muscle strength (using a dynamometer).
Our results show that lower values of muscle strength were associated with increased reaction times in OALLRT (β = -0.170; 95% confidence interval -0.011-0.000; R = 0.237; = 0.035) and in ALLRT (β = -0.228; 95% confidence interval -0.011-0.002; R = 0.199; = 0.006).
Increased muscle strength (which at low values are risk factors for sarcopenia) was associated with decreased reaction times in people >60 years of age.
功能活动能力和肌肉力量是众所周知的肌肉减少症风险因素。此外，已有研究表明肌肉减少症的易感因素与老年人的反应时间之间可能存在关联。本研究旨在分析60岁以上人群中功能活动能力、肌肉力量和反应时间之间可能存在的关联。
共有290名老年人（69.35±5.55岁）参与了本研究。评估了以下参数：光声下肢反应时间（OALLRT）；声下肢反应时间（ALLRT）；光学下肢反应时间（OLLRT，使用光学检测系统）、功能活动能力（通过计时起立行走测试）和肌肉力量（使用测力计）。
我们的结果表明，肌肉力量值较低与OALLRT（β=-0.170；95%置信区间-0.011-0.000；R=0.237；P=0.035）和ALLRT（β=-0.228；95%置信区间-0.011-0.002；R=0.199；P=0.006）反应时间增加相关。
肌肉力量增加（低值时是肌肉减少症的风险因素）与60岁以上人群反应时间缩短相关。
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