The purpose of this study was to evaluate the effectiveness of repetitions to fatigue (RTF) for estimating one-repetition maximum (1-RM) bench press performance in male high school athletes. Members of high school athletic teams (N = 213, age = 16.3 ± 1.1 yrs, weight = 79.9 ± 16.7 kg) from four states were tested for 1-RM bench press and RTF after completing 4–6 weeks of resistance training. A new equation for use with male high school athletes was developed from a random sample of 180 participants; it appears to have excellent predictive potential (r = 0.96, SEE = 4.5 kg) and cross-validated well on a subsample (n = 33) from this population (r = 0.98, t = 0.64). Therefore, RTF can be used with acceptable accuracy to estimate maximal strength in the majority of adolescent male athletes who need to handle excessively heavy weights.
J.L. Mayhew is with the Exercise Science Program, Truman State University, Kirksville, MO 63501. Kersick is with the Athletic Department, Rochelle Township High School, Rochelle, IL 61068. Lentz is with Results Therapy and Fitness, Chambersburg, PA 17201. Ware is with the Athletic Department, Truman State University, Kirksville, MO 63501. D.L. Mayhew is with the Exercise Science Program, Truman State University, Kirksville, MO 63501