Effects of the augmented reality game Pokemon GO on fitness and fatness in secondary school students

Objective: The aim of this study was to analyse the effect of 8 weeks of Pokemon GO on physical fitness (cardiorespiratory fitness [CRF], Speed/Agility [S/A], and muscular strength [MS]) and fatness (body mass index [BMI], percentage of body fat [%BF], and waist-hip index), as well as possible differences between weekly physical activity (PA) levels, in Spanish adolescents between 12 and 15 years of age. Design, setting and method: Comparative design, with a control group (n = 86) that did not participate in Pokemon GO, and an intervention group (n = 78) which did so over an 8-week period. Age, sex, number of home computers, and maternal educational level were controlled for as possible confounding variables. Results: Results show that players walked a total of 52 km in 8 weeks. Moreover, they played the game for a mean of 40 min/day. Pokemon GO players showed improvements in CRF and BMI (p < .05). Inactive young people showed a 22.2% increase in CRF and an 11.3% decrease in their %BF compared to non-players. Despite these results, less than half of the participants considered that Pokemon GO had improved their overall fitness and felt more encouraged to engage in PA. Conclusion: Pokemon GO increased PA and CRF levels and decreased BMI and %BF after 8 weeks of practice independently of age, sex, number of computers at home, and maternal education. The Pokemon GO app could be used in school and family contexts to increase the daily amount of MVPA, improve CRF, and to take advantage of the effects of loss of body fat.