ASSOCIATION OF SEDENTARY BEHAVIOR AND PHYSICAL ACTIVITY IN PATIENTS WITH HEART FAILURE
Congestive heart failure; sitting time; light-intensity activities; inactivity physical
Background: There are evidences that heart failure patients have high levels of sedentary behavior. However, the relationship between sedentary behavior (SB) and physical activity (PA) in this population is still unknown. Objective: To investigate whether low weekly moderate PA volumes are associated with the risk of increased SB in heart failure patients and to explore clinical, socio-demographic, and quality of life variables that may influence this behavior. Methods: Case–control study. Sixty-eight patients with heart failure were enrolled. Thirty-four were assigned to each group, according to daily sitting time: over 7 hours (case group), 7 hours or less (control group). The participants were matched for sex and age. The measures of SB and PA were assessed using the International Physical Activity Questionnaire; quality of life was assessed using the Minnesota Living with Heart Failure Questionnaire. The chi-square measure was used, and the magnitude of the association was calculated using the Odds Ratio. Results: The volume of weekly PA showed a statistically significant negative association with SB. Of the total sample, 45.6% (n =31) presented volumes below 500 MET-min per week, and of these, 83.9% (n = 26) presented SB above seven hours/day. Statistical significance between the clinical, socio-demographic, and quality of life variables and SB could not be verified. Conclusions: Patients with heart failure who present weekly PA volumes below the minimum recommendations are more likely to present greater SB. These patients should be advised to not only maintain adequate levels of PA, but also reduce their SB.