Atividade física, comportamento sedentário e desempenho físico em idosos

Abstract

INTRODUCTION: The time spent on physical activity, sleep and sedentary behavior can influence the physical performance of elderly people. The aim of this study was to examine the hypothetical effects of replacing time spent on sleep, sedentary behavior and moderate and vigorous activities on the physical performance of elderly people. METHODS: 457 elderly people from the Longitudinal Study of the Elderly of Alcobaça (ELSIA) were evaluated. For the evaluation of physical performance, the SPPB questionnaire was used, while the time spent in sedentary behavior and in moderate and vigorous physical activity, the Brazilian version of the IPAQ questionnaire was used, and for sleep time, the question “During the last month, how many hours of did you sleep at night? ” the PSQI-BR questionnaire. Descriptive statistics were used to characterize the sample and the isotemporal substitution analysis with multiples of 5 minutes was used to see the effects of the relocation of sedentary behavior time, sleep and moderate and vigorous physical activity on physical performance. These analyzes were carried out by reason of prevalence (PR), with a confidence index (CI) of 95%. RESULTS: The replacement of 5 minutes / day sedentary behavior or sleep in 5 minutes / day moderate and vigorous physical activity already serves as a protective factor for low performance. The protection factor increases as the time replacement is extended, reaching more than 80%. CONCLUSION: The replacement of 5 minutes of sedentary behavior and sleep for MVPA is a protective factor in 14% and 13% for poor physical performance.