Association Between Physical Activity, Sedentary Time, and Quality of Life in Patients with Chagas Disease During COVID-19 Pandemic in Brazil: A Cross-Sectional Study.

Background: COVID-19 led to social isolation, potentially reducing physical activity (PA), increasing sedentary time, and lowering quality of life (QoL). This study investigated the association between these factors in patients with Chagas disease (ChD) during the pandemic.

Methods: This cross-sectional study included 187 patients with ChD. PA and sedentary time were assessed by the IPAQ-short and QoL by the WHOQOL-Bref. The relationship between PA levels and sedentary time with QoL were assessed using unadjusted and adjusted generalized linear models.

Results: The highest tertile of total PA was positively associated with the psychological (Exp β = 1.11; 95% CI: 1.02-1.22) and environmental (Exp β = 1.12; 95% CI: 1.01-1.23) QoL domains. The intermediate (Exp β = 1.12; 95% CI: 1.01-1.25) and highest (Exp β = 1.14; 95% CI: 1.02-1.27) tertiles of moderate-to-vigorous PA were positively associated with the physical domain. Similarly, both the intermediate (Exp β = 1.11; 95% CI: 1.01-1.22) and highest (Exp β = 1.12; 95% CI: 1.01-1.21) tertiles of moderate-to-vigorous PA were positively associated with the psychological domain. The highest tertile of sedentary time was associated with a decrease in the physical domain (Exp β = 0.88; 95% CI: 0.79-0.98).

Conclusions: Higher levels of total and moderate-to-vigorous PA were associated with better QoL, while greater sedentary time was associated with poorer QoL.