Associação de excesso de peso e massa muscular com comportamento sedentário em idosos residentes nos municípios da Superintendência Regional de Saúde

Abstract

The twenty-first century is marked by changes in the epidemiological and demographic profile. The significant growth in absolute numbers of the elderly population creates challenges the public health because with aging individuals tend to spend more time in sedentary behaviors. Therefore, this study aims to examine the associations between overweight, abdominal obesity and reduced muscle mass with sedentary behavior in the older adults. . This is a cross-sectional and population-based study conducted 24 municipalities in the Triangulo Mineiro Region, State of Minas Gerais. Following the inclusion criteria, 3430 individuals aged ≥ 60 years were eligible for the study and answered a structured questionnaire containing sociodemographic, health, habits, and measurement of anthropometric variables: weight, height, waist circumference and circumference calf. Sedentary behavior was verified by total sitting time (minutes / day), evaluated according to the self-reported time sitting on a weekday and one weekend day. Distributions were calculated absolute and relative frequencies of the variables studied. Poisson regression was used to analyze the association between overweight, abdominal obesity and reduced muscle mass with sedentary behavior controlled by the covariates. Univariate regression in persons people exposed to the 2nd quartile of sitting time presented higher probability of abdominal obesity (PR = 1.061, CI = 1.008 -1.118). Adjusted for covariates, older adults exposed to longer sitting time had higher probability for being overweight (PR = 1.066, CI = 1.001 to 1.134). When analyzing association of sedentary behavior with muscle mass, both in crude or adjusted analysis, older adults more time in sedentary behavior showed reduced muscle mass probability (PR = 1.252, CI = 1.083 to 1.448) (PR = 1.187, CI = 1.045 - 1.348), respectively. Considering the results, there was a positive association between overweight and reduced muscle mass with prolonged sedentary behavior.