Abstract
The aim of this study was to evaluate and compare the effect of two types of exercises interventions on the regularity and health-related physical fitness in HIV-infected individuals who use antiretroviral therapy (ART). A total of 53 HIV+ African women (mean age=39.5±8.4 years) on ART participated in the study. Subjects were randomly divided into 3 groups, namely, formal exercise (FEG), playful exercise (PEG) and control (CG). During 12 weeks, the exercise groups underwent a program of 1-hour duration with a frequency of 3 times a week. The FEG performed a protocol that included 20 minutes of exercise, cycling at 60 % of V̇O2peak, increasing to 75 % and 85 % in the 4th and 8th weeks, respectively, and a muscular endurance circuit consisted of 6 exercises at 15 repetitions per minute (RM). The PEG followed a program consisting of active games. Before and after the intervention the participants were submitted to a clinical evaluation including immunological parameters (CD4+), cardiovascular risk factors, physical fitness and anthropometry. Comparison of somatic variables before and after the program showed no exercise effect. Immunological and cardiovascular variables were also independent of the exercise group. The main effect was found in cardiorespiratory fitness: exercise groups increased significantly in V̇O2peak (FEG=14.7 %; PEG=11.1 %) with no significant differences in CG. The percentage of high attendance was identical between the two groups. It was concluded that there is no contraindication for exercise in this type of population and the beneficial effect was mainly in cardiorespiratory fitness, regardless of the type of exercise performed.