# Epley

> 1985

- Equation: `1RM = w × (1 + r / 30)`
- Variables:
  - `w`: Load lifted, same unit as the 1RM.
  - `r`: Repetitions completed.
  - `1RM`: Estimated one-repetition maximum.
- Authors: Epley, B.
- Source: Boyd Epley Workout, Body Enterprises
- DOI: None

Originally published as a poundage chart in Boyd Epley’s workout materials (Lincoln, NE).