COVID-19(5) physical activity(3) Infection(2) exercise(2) Primary outcome(2) coronavirus disease(2) secondary outcome(2) obesity(2) immunology(2) clinically(2) Sedentary behavior(1) university(1) statistically significant difference(1) National(1) Health(1) 95% confidence interval(1) Brazil(1) Immunity(1) flexible(1) Efficiency(1) Linear regression model(1) hospital(1) statistically significant(1) Self-determination theory(1) IMPROVE(1) form(1) SARS-CoV-2.(1) patients died(1) Medicine(1) moderate-to-vigorous physical activity(1)