The effect of structured brain gym and brisk walking training on the executive functions of university students: a single-blinded randomised controlled trial

The purpose of the study was to investigate the effect of structured brain gym and brisk walking training on the executive functions (inhibitory control, working memory and cognitive flexibility) of university students. The study was designed as a single-blinded prospective randomised controlled trial with the participation of university students. 42 sedentary university students(18-25 years) joined in the study. The participants were randomly divided into three groups (two intervention groups and one control group): The Structured Brain Gym Group (SBGG), the Brisk Walking Group (BWG) and the Control Group (CG). The interventions consisted of 50-min exercise twice a week for an 8-week period. BWG attended into brisk walking programme as moderate-intensity aerobic exercise; meanwhile, SBGG performed structured brain gym activities. CG did not participate in any regular physical activities during the 8 weeks. Executive function tests (Stroop colour test, forward and backward digit span test, frontal assessment battery and verbal fluency test) were applied to the participants as a pre-test and post-test. Kruskal-Wallis, Wilcoxon test and Mann-Whitney U tests were used in the statistical analyses. According to the statistical analysis, both BWG and SBGG indicated significant improvement in inhibitory control (p < 0.05) and general frontal functions (p < 0.05) following the intervention. However, compared to BWG, the improvement in inhibitory control was better in SBGG. No change was found in working memory and cognitive flexibility in any of the groups. We can recommend that cognitively demanding and fun aerobic exercise tasks can be used to improve young adult's inhibitory control.