Matias, Guilherme Henrique de Lima, et al. “Effect of 12 Weeks of Recreational Soccer on Executive Functions and Physical Fitness in Older Humans”. Brazilian Journal of Physical Education and Sport, vol. 35, no. 4, Dec. 2021, pp. 155-62, https://doi.org/10.11606/issn.1981-4690.v35i4p155-162.