Relationship between the number of repetitions and selected percentages of one repetition maximum in free weight exercises in trained and untrained men - Shimano, T; Kraemer, W J; Spiering, B A; Volek, J S; Hatfield, D L; Silvestre, R; Vingren, J L; Fragala, M S; Maresh, C M; Fleck, S J; Newton, R U; Spreuwenberg, L P; Hakkinen, K (J Strength Cond Res, 2006)