Associations of Physical Activity and Sedentary Behavior With Self-Rated Health Status in Brazilian Older Adults

In a longevity society, as we live longer, adopting healthy lifestyles is essential to develop and maintain functional ability, which enables well-being in older adults. We aim to examine the associations of physical activity (PA) and sedentary behaviors (SBs) with self-rated health (SRH) status in older Brazilian adults. We analyzed 21,701 persons aged 60 or older from the Brazilian National Health Survey. A partial proportional odds model for SRH adjusted by sociodemographic confounders was estimated. The marginal effects of PA and SB on SRH status were expressed in terms of the average-adjusted probabilities. In addition, average-adjusted probabilities for the better and worse SRH status among representative cases of Brazilian socioeconomic inequalities were calculated. The main findings of the study indicate: (a) a significant positive association exists between PA and SRH status and, conversely, a negative association exists between SB and SRH; (b) the PA effect across daily sitting time watching TV attenuated and improved the probability of declaring a worse and better SRH status, respectively; and (c) the SRH status differences associated with PA and SB represent the socioeconomic inequalities in the older Brazilian population. Beyond some methodological limitations, we conclude that increasing PA and SB in older persons is significantly associated with better and worse SRH status, respectively. In addition, the results suggest that SRH status is a consistent health inequality measurement. In societies moving on longevity transition, substantial efforts are required in individuals' behavior across the life courses and public policies to promote healthy aging.