Abstract
The present study aimed to assess the association between sedentary behavior and sarcopenia among adults aged ≥65 years. Cross-sectional data from the Study on Global Ageing and Adult Health were analyzed. Sarcopenia was defined as having low skeletal muscle mass and either a slow gait speed or a weak handgrip strength. Self-reported sedentary behavior was assessed as a continuous variable (hours per day) and also as a categorical variable (0–<4, 4–<8, 8–<11, ≥11 hours/day). Multivariable logistic regression was conducted to assess the association between sedentary behavior and sarcopenia. Analyses using the overall sample and country-wise samples were conducted. A total of 14,585 participants aged ≥65 years were included in the analysis. Their mean age was 72.6 (standard deviation, 11.5) years and 55% were females. Compared to sedentary behavior of 0–<4 hours/day, ≥11 hours/day was significantly associated with 2.14 (95% CI = 1.06–4.33) times higher odds for sarcopenia. The country-wise analysis showed that overall, a one-hour increase in sedentary behavior per day was associated with 1.06 (95% CI = 1.04–1.10) times higher odds for sarcopenia, while the level of between-country heterogeneity was low (I2 = 12.9%). Public health and healthcare practitioners may wish to target reductions in sedentary behavior to aid in the prevention of sarcopenia in older adults.
Highlights
Sarcopenia may be defined as “age-related muscle loss, affecting a combination of appendicular muscle mass, muscle strength, and/or physical performance measures” [1]
The prevalence of sarcopenia was 15.7%, while the percentage of those who engaged in 0–
The country-wise analysis showed that overall, a one-hour increase in sedentary behavior per day is associated with a 1.06 times higher odds for sarcopenia, and the level of between-country heterogeneity was low (I2 = 12.9%) (Figure 2)
Summary
Sarcopenia may be defined as “age-related muscle loss, affecting a combination of appendicular muscle mass, muscle strength, and/or physical performance measures” [1]. The prevalence of sarcopenia is high in older adults. A recent meta-analysis suggested that sarcopenia prevalence in older adults is approximately 10% [2]. Sarcopenia has been shown to be associated with several adverse health outcomes in older people. In a recent umbrella review with integrated meta-analyses on the association between sarcopenia with other medical conditions in older adults, it was found that sarcopenia was associated with premature mortality, disability, and falls [3]. Other research has suggested that sarcopenia is associated with a significantly higher proportion of problems relating to several dimensions of quality of life [4]. Owing to the relatively high prevalence of sarcopenia and the associated adverse health outcomes, research is needed to identify modifiable risk factors of the condition to inform targeted interventions
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