# Brzycki

> 1993

- Equation: `1RM = w × 36 / (37 − r)`
- Variables:
  - `w`: Load lifted, same unit as the 1RM.
  - `r`: Repetitions completed.
  - `1RM`: Estimated one-repetition maximum.
- Authors: Brzycki, M.
- Source: Journal of Physical Education, Recreation & Dance, 64(1), 88–90
- DOI: [10.1080/07303084.1993.10606684](https://doi.org/10.1080/07303084.1993.10606684)