Prado, A. K. G., G. M. Schwartz, K. Tanaka, M. S. Doll, R. Gonçalves, and S. Gobbi. “<b>Acute and Chronic Effect of a Physical Activity Program Performed at the ‘playground of longevity’ on Mood States in the elderly</b&gt; - Doi: 10.4025/reveducfis.V21i3.7729”. Journal of Physical Education , Vol. 21, no. 3, Sept. 2010, pp. 517-26, https://periodicos.uem.br/ojs/index.php/RevEducFis/article/view/7729.