摘要：Moraes E, Alves HB, Teixeira AL, Dias MR, Miranda H, Simão R. Relationship between Repetitions and Selected Percentage of One Repetition Maximum in Trained and Untrained Adolescent Subjects. JEPonline 2014;17(2):27-35. This study compared 7 males with experience in resistance training (trained group: 14.4 ± 1.3 yrs) to 10 males with no prior experience (untrained group: 14.6 ± 0.8 yrs). The subjects performed maximum repetitions at 80% of one repetition maximum (1RM) until concentric fatigue in the bench press (BP), the lat pull-down (LPD), and the 45º leg press (LP) resistance exercises. The number of repetitions achieved during the LP was greater than during the LPD in both groups (P≤0.05). The number of repetitions for the LP and the LPD were greater than during the BP in both groups (P≤0.05). The number of repetitions was greater in the trained group vs. the untrained group in both the LP and the LPD exercises (P≤0.05). There was no significant difference between the groups (P≥0.05) during the BP exercise. The findings indicate that the number of repetitions achieved at 80% of 1RM in trained and untrained adolescent subjects vary with different resistance exercises.
