1RM (one-rep max)
The 1RM is the heaviest load a person can lift once in a given exercise with correct technique. It can be measured directly with a test or estimated from a submaximal set, using formulas such as Epley or Brzycki that relate the weight lifted to the reps achieved. It is the reference the percentage loads of a program are calculated from.
1RM (one-rep max)
The 1RM is the heaviest load a person can lift once in a given exercise with correct technique. It can be measured directly with a test or estimated from a submaximal set, using formulas such as Epley or Brzycki that relate the weight lifted to the reps achieved. It is the reference the percentage loads of a program are calculated from.
Also written as: 1RM · one rep max · one-repetition maximum
In practice
Almost nobody tests a true 1RM every week: it is exhausting and it carries risk. That is why the estimated 1RM, recalculated from working sets, is what actually drives programming.
The common mistake
Treating the estimate as if it were measured. Formula accuracy drops as rep count climbs: an estimate from a set of 12 says far less than one from a set of 3.
