Clinical features of 65‐year‐old individuals in Japan diagnosed with possible sarcopenia based on the Asian Working Group for Sarcopenia 2019 criteria

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AIM: The prevalence of sarcopenia and the health status of affected individuals, particularly among the young elderly, are unclear in Japan. We determined the prevalence of possible sarcopenia, a concept proposed by the Asian Working Group for Sarcopenia (AWGS) in 2019, and then investigated its clinical features in community-dwelling young elderly individuals in Kobe, a representative large city in Japan. METHODS: This retrospective cross-sectional study examined 1768 residents of Kobe aged 65 years who underwent health and frailty checkups implemented by Kobe City between April 2017 and March 2019. Possible sarcopenia was diagnosed by the AWGS 2019 algorithm. Frailty status was assessed with the use of the Kihon Checklist, which was developed to identify senior citizens requiring nursing care in Japan. RESULTS: Fifty-one of the 1768 subjects were diagnosed with possible sarcopenia (overall prevalence of 2.9% [confidence interval: 2.1-3.7%]), with the prevalence being higher in women than in men. Individuals with possible sarcopenia had a lower body mass index, abdominal circumference, diastolic blood pressure and percentage of taking lipid-lowering drugs as well as a higher high-density lipoprotein cholesterol level and estimated glomerular filtration rate. They also showed a higher degree of frailty. A low body mass index and physical inactivity were significantly associated with possible sarcopenia. CONCLUSIONS: The prevalence of possible sarcopenia based on the AWGS 2019 criteria was 2.9% among 65-year-olds in Japan, with affected individuals more likely to be frail compared with those without this condition. Geriatr Gerontol Int 2021; 21: 689-696.

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