Today: 14 Oct 2008
One Rep Max or ORM is the most weight a person can press, curl, lift or pull for a single repetition.
To calculate your one rep max take the number of repetitions you achieved and then divide the weight you lifted by the % one rep max, for example; weight lifted = 100 lbs, reps completed = 8 reps, % one rep max = one rep max = 128 lbs. Remember to re-calculate your one rep max every 4 to 6 weeks to allow for strength improvements.
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