FERREIRA, S.; MARINS, J. C. B.; SILVA, L. C. DA; LUNZ, W.; PIMENTEL, G. G. DE A.; MIGLIORINI, E. M. Determination of the profile of maximum repetitions in the leg extension exercise and straight supino with different percentages of strength. Journal of Physical Education (Maringá), v. 17, n. 2, p. 149-159, 15 May 2008.