Balbinotti, Marcos Alencar Abaide, and Carla Josefa Capozzoli. 2008. “ Regular Practical Motivation for Physical Activity: An Exploratory Study With Practitioners in Gymnastics Academies ”. Brazilian Journal of Physical Education and Sport 22 (1): 63-80. https://doi.org/10.1590/S1807-55092008000100006.