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Abstract
Recently, weight training has become popular among the general populace as a means of
developing a health and physical fitness. However, there are many obscure points relating to the
number of repetition maximum and oxygen consumption in the free weight exercises. This study
focuses on general male college students (n=26) and measures the number of repetition maximum at
60, 70, 80, and 90% 1RM in bench press and squat using barbells. It also measures oxygen
consumption when students (n=15) were asked to do 10 repetitions at 70% 1RM. For bench press,
numbers of repetition maximum were 20.6±3.8, 15.0±2.9, 10.2±2.1, and 5.1±1.7 reps, respectively.
For squat, numbers of repetition maximum tended to be high, at 24.1±6.5 (p<0.01), 17.5±3.7 (p<0.05),
11.2±3.4, and 5.2±2.0 reps, respectively. Oxygen requirements for bench press and squat were
respectively 2,276±614 ml (34.5±9.9 ml/kg) and 4,579±911 ml (69.0±13.8 ml/kg), while METs
(metabolic equivalents) were respectively 19.9±6.3 and 37.9±10.1. From these results, it is clear that
among general college students using free weights, the number of repetition maximum for squat
tended to be even greater than one for bench press, and the oxygen consumption volume was
approximately twice as high for squat as for bench press.
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