PRADO, A. K. G.; SCHWARTZ, G. M.; TANAKA, K.; DOLL, M. S.; GONÇALVES, R.; GOBBI, S. <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 , v. 21, n. 3, p. 517-526, 5 Sep. 2010.