F. . Martins Pousas, A. . Santos Rodrigues, I. . Araújo Duarte, and A. . Salustiano Bispo, “A comparative study of the alterations of cardiovascular aptitude in old aged women practicing walking exercises in Alvarenga, MG”, Mundo Saude, vol. 31, no. 4, pp. 489–493, Oct. 2007.