Abstract
The purpose of this study was to compare actual and predicted one repetition maximum (1RM) utilizing the 225-test. The 225-test consists of a subject performing the maximal number of bench press repetitions with 225 lbs without time limitation. Football players (N=51) from a NCAA Division II University provided informed consent and performed a 1RM bench press and the 225-test in random order. Using the 225-test results (mean reps=12.3±5.5), a predicted 1RM was obtained from three equations(Epley, 1985; Mayhew et al., 1992; and Brzycki, 1993). The mean age of the subjects was 20.5±1.5 yrs (range 18-26 yrs.) with a mean weight of 224.06±38.25 lbs. Pearson Correlation coefficients yielded high correlations between actual 1RM and predicted 1RM with each equation (r= 0.94 to r= 0.95). One-way ANOVA revealed a significant (p≤0.05) difference among the actual (310.0±41.6 lbs.) and predicted 1RM from the three equations(Epley= 316.3±41.1 lbs; Mayhew et al.= 320.1±42.0; Bryzcki= 345.8±85.0). Scheffe post-hoc analysis revealed that the Brzycki equation was significantly (p≤0.05) different from the actual 1RM. No other significant differences (p≤0.05) were found. The findings of this study indicate the prediction of 1RM bench press in NCAA Division II football players is possible using 1RM prediction equations by Epley or Mayhew et al.
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