P. M. L. de Souza, W. Jacob-Filho, J. M. Santarém, A. R. da Silva, H. Y. Li, and M. N. Burattini, “ Progressive resistance training in elderly hiv-positive patients: does it work? ”, Clinics, vol. 63, no. 5, pp. 619–624, Jan. 2008, doi: 10.1590/S1807-59322008000500009.