Kazuki Uemura1, Hyuma Makizako2, Sangyoon Lee3, Takehiko Doi3, Sungchul Lee3, Kota Tsutsumimoto3, Hiroyuki Shimada3. 1. Liberal Arts and Sciences, Faculty of Engineering, Toyama Prefectural University, 5180 Kurokawa, Imizu 939-0398, Japan. Electronic address: uemura@pu-toyama.ac.jp. 2. Department of Physical Therapy, School of Health Sciences, Faculty of Medicine, Kagoshima University, Kagoshima, Japan; Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Obu, Japan. 3. Department of Preventive Gerontology, Center for Gerontology and Social Science, National Center for Geriatrics and Gerontology, Obu, Japan.
Abstract
OBJECTIVES: Whether sarcopenia predicts incident homebound status remains unclear. This prospective cohort study aimed to determine the impact of sarcopenia on the incidence of homebound status in community-dwelling older adults. METHODS: The study included 3958 community-dwelling elderly people aged ≥65 years who were not homebound at baseline. Sarcopenia was defined as the presence of both poor muscle function (low physical performance or low muscle strength) and low muscle mass. Potential confounding factors, such as physical status, mental status, and level of social participation, were also assessed. Fifteen months after the baseline measurements, data regarding the incidence of homebound status were obtained using a postal survey. RESULTS: In the 15-month follow-up survey, 83 participants (2.1%, 95% confidence interval = 1.6-2.5) were reported to have become homebound. A multiple logistic regression analysis indicated that age (odds ratio = 1.06, 95% confidence interval = 1.02-1.10), sarcopenia (1.98, 1.04-3.77), and limited contact with friends (1.82, 1.03-3.23) were independently associated with an increased risk of becoming homebound. In a stratified analysis for age group, a significant odds ratio for low level of social role (2.50, 1.06-5.91) was observed in young-old subjects (aged 65-74 years), whereas significant odds ratios for sarcopenia (2.80, 1.33-5.91) and physical inactivity (2.85, 1.28-6.37) were observed in old-old subjects (aged 75 years and over). CONCLUSION: Sarcopenia had a strong impact on the risk of becoming homebound. Particularly in old-old subjects, sarcopenia and physical inactivity may impair people's ability to engage in activities outside the home much more than either their mental status or their level of social participation.
OBJECTIVES: Whether sarcopenia predicts incident homebound status remains unclear. This prospective cohort study aimed to determine the impact of sarcopenia on the incidence of homebound status in community-dwelling older adults. METHODS: The study included 3958 community-dwelling elderly people aged ≥65 years who were not homebound at baseline. Sarcopenia was defined as the presence of both poor muscle function (low physical performance or low muscle strength) and low muscle mass. Potential confounding factors, such as physical status, mental status, and level of social participation, were also assessed. Fifteen months after the baseline measurements, data regarding the incidence of homebound status were obtained using a postal survey. RESULTS: In the 15-month follow-up survey, 83 participants (2.1%, 95% confidence interval = 1.6-2.5) were reported to have become homebound. A multiple logistic regression analysis indicated that age (odds ratio = 1.06, 95% confidence interval = 1.02-1.10), sarcopenia (1.98, 1.04-3.77), and limited contact with friends (1.82, 1.03-3.23) were independently associated with an increased risk of becoming homebound. In a stratified analysis for age group, a significant odds ratio for low level of social role (2.50, 1.06-5.91) was observed in young-old subjects (aged 65-74 years), whereas significant odds ratios for sarcopenia (2.80, 1.33-5.91) and physical inactivity (2.85, 1.28-6.37) were observed in old-old subjects (aged 75 years and over). CONCLUSION:Sarcopenia had a strong impact on the risk of becoming homebound. Particularly in old-old subjects, sarcopenia and physical inactivity may impair people's ability to engage in activities outside the home much more than either their mental status or their level of social participation.
Authors: Rick Yiu Cho Kwan; Justina Yat Wa Liu; Yue-Heng Yin; Paul Hong Lee; Siu Ying Ng; Daphne Sze Ki Cheung; Patrick Pui Kin Kor; Simon Ching Lam; Shirley Ka Lai Lo; Lin Yang; Siu Kay Chan; Vico Chung Lim Chiang Journal: BMC Geriatr Date: 2022-03-25 Impact factor: 3.921