Exercise group was resistance training three times per week, during 45 to 60 minutes per day. Training program was composed by bench press, leg press 45°, lat pulldown, knee extension, dumbbell lateral raise, horizontal leg curl, triceps pulldown, seated calf raise, biceps curls and abdominal. Participants should complete 3 series with 8-12 repetitions of each exercise, which was supervised by trained research personnel. There were 60 seconds of interval between series and exercises were separated by a 120 seconds recovery period.

Control group was not do any exercise during intervention period. Participants was asked to keep their habitual routine until finish the final evaluations.

Resistance training 3 times per week (45-60 minutes of resistance training)

Victoria Stroop, Castro Cunha & Martins Stroop and Trail Test were performed at baseline and after eight weeks of intervention in both groups (EG and CG). Blood will be collected and brain-derived neurotrophic factor (BDNF) will be measured by Enzyme-Linked Immunosorbent Assay Method (Human - ELISA Kit) at baseline and after eight weeks of intervention in both groups (EG and CG).

Blood was collected and cluster of differentiation 4 (T CD4+) and cluster of differentiation 8 (T CD8+) cells was measured by flow cytometry (BD TrucountTM Tubes) with FACSCalibur (Dickinson, New Jersey, USA) at baseline and after eight weeks of intervention in both groups (EG and CG).

Body composition was evaluated at baseline and after eight weeks of intervention in both groups (EG and CG) using thickness of skin folds (Lange Adipometer). The skin folds of the triceps, subscapular, supra iliac, abdominal, thigh and leg were collected. The data were inserted into formulas appropriate to the population studied for calculating body composition.