Sarcopenia definitions and their associations with mortality in older Australian women
Marc Sim, Edith Cowan UniversityFollow
Richard L. Prince
Robin M. Daly
Charles A. Inderjeeth
Richard J. Woodman
Jonathan M. Hodgson, Edith Cowan UniversityFollow
Joshua R. Lewis, Edith Cowan UniversityFollow
Journal of the American Medical Directors Association
School of Medical and Health Sciences
NHMRC : 572604 / NHMRC : 254627 / NHMRC : 303169
OBJECTIVES: To investigate the relationship of 4 sarcopenia definitions with long-term all-cause mortality risk in older Australian women.
DESIGN: Data from the Perth Longitudinal Study in Aging Women from 2003 to 2013 was examined in this prospective cohort study. The 4 sarcopenia definitions were the United States Foundation for the National Institutes of Health (FNIH), the European Working Group on Sarcopenia in Older People (EWGSOP), and adapted FNIH (AUS-POP
SETTING AND PARTICIPANTS: In total, 903 community-dwelling older Australian women (baseline mean age 79.9 ± 2.6 years) with concurrent measures of muscle strength (grip strength), physical function (timed-up-and-go; TUG) and appendicular lean mass (ALM) were included.
MEASURES: Cox-proportional hazards modeling was used to examine the relationship between sarcopenia definitions and mortality over 5 and 9.5 years.
RESULTS: Baseline prevalence of sarcopenia by the 4 definitions differed substantially [FNIH (9.4%), EWGSOP (24.1%), AUS-POP
CONCLUSIONS/RELEVANCE: Unlike FNIH, the EWGSOP sarcopenia definition incorporating weak muscle strength and/or poor physical function was related to prognosis, as was the regionally adapted version of EWGSOP. Although sarcopenia definitions were not developed based on prognosis, this is an important consideration for globally standardizing the sarcopenia framework.