Sex Differences In Impact of Sarcopenia On Falls In Community-Dwelling Older Adults

Background: Falls are one of the most serious health problems among older adults. Sarcopenia is characterized by a decrease in muscle mass, strength, and physical function. Due to potentially age-related conditions, both falls and sarcopenia have common risk factors. However, the association between sarcopenia and falls is controversial. Methods: In this cross-sectional study, we used data from the Korean Frailty and Aging Cohort Study; 2,323 community-dwelling older adults (1,111 men and 1,212 women) aged 70–84 years were recruited in this cross-sectional study. To evaluate sarcopenia, the Asian Working Group for Sarcopenia (AWGS) diagnostic algorithm was used. We compared the faller and non-faller groups. Unadjusted and fully adjusted logistic regression analyses were performed to evaluate the relationship between sarcopenia and falls. Results: A total of 239 (24.1%) women in the faller group had a history of falls in the past year, which was statistically higher than that in men (176, 15.8%). In the fully adjusted model, handgrip strength (odds ratio [OR]=1.508, 95% confidence interval [CI]=1.028–2.211), short physical performance battery (OR=2.068, 95% CI=1.308–3.271), and 4-m walking speed (OR=3.499, 95% CI=2.044–5.991) were significantly lower in the male faller group. However, the female faller group only showed a significantly low appendicular skeletal muscle mass index (OR=1.419, 95% CI=1.058–1.903) in the fully adjusted model. Conclusions: This large cohort study aimed to identify the incidence of sarcopenia in older Korean population using the AWGS diagnostic algorithm and its correlation with falls. The incidence of falls did not increase in the sarcopenia group. Among the sarcopenia components, sex differences affect the a history of falls. Therefore, when studying the risk of falls in old age, sex differences should be considered.