Lombardi 1RM Calculator
Calculate 1RM using V.P. Lombardi's 1989 non-linear power formula
Input Parameters
Real-time calculation updates dynamically as you adjust inputs. Values remain strictly local on your device.
Lombardi 1RMPower Law 0.10
117.5kg
~259 lbs
Clinical Responsibility Note: This calculation provides statistical estimations for informational and educational purposes only. It is not an individualized medical diagnosis or clinical prescription.
Mathematical Formula & Scientific Methodology
Formula: Lombardi Power Equation (1989)
1RM = Weight × Reps^0.10Avoids linear drop-off assumptions, handling moderate repetition ranges cleanly.
Model Assumptions
- Consistent muscular fatigue curvature
Variables & Standard Units
| Symbol | Physiological Meaning | Unit |
|---|---|---|
| 0.10 | Empirical power-law exponent | dimensionless |
Scientific Limitations
- Slightly less conservative for high rep counts
Peer-Reviewed Scientific Citations
Beginning Weight Training (1989)
Lombardi VP (1989) — Wm. C. Brown Publishers
Key Finding: 1RM = weight * reps^0.10. Non-linear power model that avoids underestimating at moderate rep counts.
Frequently Asked Questions
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