Santos, Jorge, Luis Maia, João Petrica, João Serrano, Marco Batista, and Samuel AA Honório. “Attention in Physical Education Classes: Differences Between Different Individual Modalities”. Journal of Human Sport and Exercise 14, no. 1proc (January 21, 2019): S37-S46. Accessed June 20, 2024. https://www.jhse.ua.es/article/view/2019-v14-n1-proc-attention-physical-education-classes.