The number of repetition maximum of bench press and squat at %1RM in untrained male and female university students

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Other Title
  • 一般男女大学生におけるベンチプレス及びスクワットの1RM相対重量での最高反復回数

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The purpose of this study was to measure the number of repetition maximum (nRM) in %1RM of bench press (BP) and squat (SQ) in untrained male and female university students, and to clarify its relationships. The subjects were 76 males (20.0±0.9 yr) and 38 females (19.2±1.3 yr), nRM was measured using a barbell at 90%, 80%, 70%, and 60% 1RM of BP and SQ. The 1RM of BP and SQ for male and female students were 62.7±18.3 kg (0.949±0.267 kg/wt) and 89.9±25.5 kg (1.354±0.312 kg/wt) for males, and 32.3±7.0 kg (0.577±0.126 kg/wt) and 59.7±14.8 kg (1.063±0.242 kg/wt) for females, respectively. There was no significant difference in the nRM at 90% and 80% 1RM in both events. However, the nRM at 70% 1RM in BP and SQ were 13.8±2.7 and 16.3±4.8 reps for males, and 16.6±2.9 and 20.0±6.0 reps for females respectively, at 60% 1RM were 19.6±3.9 and 23.3±6.7 reps for males, and 22.7±4.1 and 29.3±7.1 reps for females, with significant differences between males and females and between events. Regarding the correlation between each %1RM (kg/wt) and nRM in BP and SQ, no significant correlations were observed in males, but in females, significant correlations were observed in the 70% (r=0.427, p<0.01) and 60% 1RM (r=0.610, p<0.001) of squat. From these results, the number of repetition maximum at 70% and 60% 1RM of bench press and squat for untrained female is higher than that of male, and that number for both gender is higher for squat than bench press. And it was suggested that the number of repetition maximum for female was positively correlated with muscle strength.

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