The above 1 Rep Max calculator (1RM, 1
Repetition Maximum) is based on Brzycki's equation.
This equation estimates your one rep max based on the number of repetitions you can perform
on a particular exercise until muscular failure. The equation will only
provide a valid estimation for repetitions of magnitude ten or below.
References:
Brzycki, M. Strength testing: Predicting a one-rep max from a
reps-to-fatigue, Journal of Physical Education, Recreation and Dance
64 (1): 88-90, 1993
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