(Sport scientist Robert Roman has written extensively on the training of competitive lifters and he concluded that the most successful weightlifters tend to do most of their sets in the 3RM to 4RM range. This observation was echoed by Canadian weightlifting coach Pierre Roy, who believes that the average rep range for athletes should be 3. The take home point is that if an athlete does singles or doubles for too long, he will stagnate. This, of course, is especially true for athletes who seek hypertrophy).
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