SCHAEFER, D. R. C.; RIES, L. G. K. <b>Electromyographical analysis of hamstrings in prone leg curl and seated leg curl</b&gt; - doi: 10.4025/reveducfis.v21i4.8328. Journal of Physical Education , v. 21, n. 4, p. 616-624, 5 Dec. 2010.