Piecewise Wathan 1RM, RPE Load Prescription & Plate Calculator
Powered by the Struggl Prescriptive Load Subsystem. Uses e1RM = 100*W / (48.8 + 53.8 * exp(-0.075 * reps)) validated by LeSuer et al. (1997) as the most accurate 1RM equation across Squat, Bench Press, and Deadlift.
- RPE 10 (0 RIR): 1 rep = 100.0%, 3 reps = 91.7%, 5 reps = 85.7%, 8 reps = 78.3%, 10 reps = 74.2%, 12 reps = 70.6%.
- RPE 8 (2 RIR): 1 rep = 91.7%, 3 reps = 85.7%, 5 reps = 80.6%, 8 reps = 74.2%, 10 reps = 70.6%, 12 reps = 67.5%.
- Weighted Calisthenics System Load (`total_load`): Prescribes percentage on (Bodyweight + Belt Weight) before subtracting Bodyweight.
| Component | Deterministic Specification & Literature Benchmark |
|---|---|
| Rule / Benchmark 01 | RPE 10 (0 RIR): 1 rep = 100.0%, 3 reps = 91.7%, 5 reps = 85.7%, 8 reps = 78.3%, 10 reps = 74.2%, 12 reps = 70.6%. |
| Rule / Benchmark 02 | RPE 8 (2 RIR): 1 rep = 91.7%, 3 reps = 85.7%, 5 reps = 80.6%, 8 reps = 74.2%, 10 reps = 70.6%, 12 reps = 67.5%. |
| Rule / Benchmark 03 | Weighted Calisthenics System Load (`total_load`): Prescribes percentage on (Bodyweight + Belt Weight) before subtracting Bodyweight. |
Verified Scientific DOIs: 10.1519/00124278-199711000-00001, 10.1519/JSC.0000000000001049, 10.3389/fphys.2018.00247