Associations among Respiratory Function and Muscle Strength, Locomotive Function, and Cognitive Function in Japanese Community-dwelling Elderly Individuals

DOI Open Access
  • MAEDA Takuya
    Department of Rehabilitation, Kitasato University East Hospital
  • KAMIDE Naoto
    School of Allied Health Sciences, Kitasato University Graduate School of Medical Sciences, Kitasato University
  • TOZAKI Kiyoshi
    Graduate School of Medical Sciences, Kitasato University
  • SHIBA Yoshitaka
    School of Allied Health Sciences, Kitasato University
  • SAKAMOTO Miki
    School of Allied Health Sciences, Kitasato University

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  • 日本人地域在住高齢者の呼吸機能は筋力，移動能力，認知機能と関連する

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Abstract

<p>Objective: The aim of this study was to cross-sectionally investigate the associations among respiratory function and muscle strength, locomotive function, cognitive function, and body composition in Japanese community-dwelling elderly individuals.</p><p>Method: The participants in this study were 347 Japanese community-dwelling elderly individuals aged 65 years or older. All the participants could independently perform activities of daily living. Individuals who had any respiratory disease or heart disease were excluded from this study. For the assessment of respiratory function, the forced vital capacity (FVC) and forced expiratory volume in 1.0 second (FEV1.0) were measured. For muscle strength and locomotive function, the grip strength, leg muscle strength, chair stand test, timed up and go test (TUGT), and comfortably paced and maximum-paced 5-meter walking times were assessed. The trail-making test part A (TMT-A) was assessed for cognitive function. Moreover, the skeletal muscle index and fat mass per body weight were measured for the index of body composition. The associations among respiratory function and muscle strength, locomotive function, cognitive function, and body composition were analyzed using multiple regression analysis adjusted for the following confounding factors: age, sex, height, weight, and smoking status.</p><p>Result: As the results of multiple regression analysis, accounting for the effect of confounding factors, the FVC was significantly associated with grip strength, TUGT, and TMT-A results. Similarly, the FEV1.0 was significantly associated with grip strength and TMT-A results.</p><p>Conclusion: It was suggested that respiratory function is comprehensively associated with muscle strength, locomotive function, and cognitive function in Japanese community-dwelling elderly individuals.</p>

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