Barnett, E. Y., P. M. Ridker, C. A. Okechukwu, J. L. Barrett, and S. L. Gortmaker. “Children’s Physical Activity Levels in a Sports-Oriented Summer Day Camp”. Journal of Human Sport and Exercise, vol. 13, no. 2, June 2018, pp. 430-42, doi:10.14198/jhse.2018.132.13.