A before‐school physical activity intervention to improve cognitive parameters in children: The Active‐Start study

The aim of the study was threefold: (a) to test a before‐school physical activity intervention (Active‐Start) on academic performance, selective attention, and concentration capacity; (b) to test the effect of the Active‐Start intervention on anthropometry, body composition, and physical fitness parameters; and (c) whether the physical fitness components are moderators of the effect of the Active‐Start program on academic performance, selective attention, and concentration capacity in Chilean children. The Active‐Start intervention was a RCT which comprised 170 children (8‐10 years old) from three public schools with low socioeconomic status from the city of Santiago (Chile). The exercise intervention was delivered daily, before starting the first school‐class (8:00‐8:30 am) for 8 weeks. Changes in academic performance, selective attention and concentration capacity, anthropometric, body composition, and physical fitness parameters were measured. The analyses used were mixed regression models for repeated measures over time. No statistically significant changes in attention and concentration capacity were found. However, significant changes were seen in language (0.63; 95% CI 0.49‐0.77) and mathematics (0.49; 95% CI 0.32‐0.66) performance (P