Estimated 1RM (Epley and Brzycki)
Estimates the maximum load a person could lift once from a submaximal set taken to failure, to prescribe strength training as a percentage of 1RM.
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Check the population, units and version. The result shows the formula or classification; it does not make an automatic treatment decision.
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Method · Limits of application
Epley load×(1+reps/30) and Brzycki 1993 load×36/(37−reps); local average; 1 rep=load
1RM is an estimate from load in kg and complete repetitions to fatigue, not a measured maximum. LeSuer 1997 studied 67 untrained college students after familiarization, using bench press, squat and deadlift sets of 10 repetitions or fewer. The interface accepts up to 15, but this study does not support extrapolation to 11–15. Error varied by exercise. The Epley–Brzycki mean is a local choice, not a combined equation validated in that study; the result does not guarantee a safe maximum load.
Conditions of use
Check the population, units, inclusion and exclusion criteria, and version in the original source. A result alone does not establish a diagnosis, discharge decision or prescription.
Documented parameters
- Weight lifted · kg
- Completed repetitions to failure
3/3 reference cases checked. Numerical tests are not clinical validation.
Relationship with cancer research
General context — relationship to be defined
A resource for general clinical contexts. This edition does not assign a specific oncological relationship; selecting it for a study requires a justified question, population and purpose.