title: Sarcopenia: Prevalence and associated factors based on different suggested definitions in community-dwelling older adults.
abstract: The age-related loss of muscle mass and/or strength and performance, sarcopenia, has been associated with geriatric syndromes, morbidity and mortality. Although sarcopenia has been researched for many years, currently there is a lack of consensus on its definition. Some studies define sarcopenia as low muscle mass alone, whereas other studies have recently combined low muscle mass, strength and physical performance suggested by the European Working Group on Sarcopenia in Older People, as well as the Asian Working Group for Sarcopenia. The arbitrary use of various available sarcopenia definitions within the literature can cause discrepancies in the prevalence and associated risk factors. The application of population-specific cut-off values in any sample population can be problematic, particularly among different ethnicities. Using commonly used cut-off points to define sarcopenia, including solely muscle mass and combined definitions, on a community-dwelling elderly Japanese population, the prevalence of sarcopenia ranged from 2.5 to 28.0% in men and 2.3 to 11.7% in women, with muscle mass measured by dual-energy X-ray absorptiometry, and 7.1-98.0% in men and 19.8-88.0% in women measured by bioelectrical impedance analysis. Body mass index was the most prominent related factor for sarcopenia across the definitions in this Japanese sample. However, other associated hematological and chronic condition factors varied depending on the definition.
authors.affiliation: Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
authors.forename: Hunkyung
authors.initials: H
authors.lastname: Kim
authors.affiliation: Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
authors.forename: Hirohiko
authors.initials: H
authors.lastname: Hirano
authors.affiliation: Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
authors.forename: Ayako
authors.initials: A
authors.lastname: Edahiro
authors.affiliation: Graduate School of Medical and Dental Science, Tokyo Medical and Dental University, Tokyo, Japan.
authors.forename: Yuki
authors.initials: Y
authors.lastname: Ohara
authors.affiliation: Department of Advanced Medicine, Division of Oral and Dental Surgery, National Center for Geriatrics and Gerontology, Aichi, Japan.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Watanabe
authors.affiliation: Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
authors.forename: Narumi
authors.initials: N
authors.lastname: Kojima
authors.affiliation: Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
authors.forename: Miji
authors.initials: M
authors.lastname: Kim
authors.affiliation: Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
authors.forename: Erika
authors.initials: E
authors.lastname: Hosoi
authors.affiliation: Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
authors.forename: Yuko
authors.initials: Y
authors.lastname: Yoshida
authors.affiliation: Research Team for Promoting Independence of the Elderly, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
authors.forename: Hideyo
authors.initials: H
authors.lastname: Yoshida
authors.affiliation: Research Team for Social Participation and Community Health, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan.
authors.forename: Shoji
authors.initials: S
authors.lastname: Shinkai
mesh_terms: D000368:Aged; D000375:Aging / Q000502:physiology*; D005684:Gait / Q000502:physiology*; D015577:Geriatric Assessment; D014943:Global Health; D018737:Hand Strength; D006801:Humans; D053580:Muscle Strength / Q000502:physiology*; D015995:Prevalence; D012307:Risk Factors; D055948:Sarcopenia / Q000453:epidemiology* / Q000503:physiopathology
keywords: muscle strength; sarcopenia; skeletal muscle mass; walking ability