Home
Back
Leg Press Max Formula:
| From: | To: |
The Leg Press Max calculation estimates your one-rep maximum (1RM) for the leg press exercise based on the weight you can lift for multiple repetitions. This helps in designing appropriate training programs without testing your true 1RM, which can be risky.
The calculator uses the Brzycki formula:
Where:
Explanation: This formula estimates your theoretical one-rep maximum based on your performance with submaximal weights, providing a safer alternative to testing your true 1RM.
Details: Knowing your estimated 1RM helps in designing effective training programs, setting appropriate training loads, and tracking strength progress over time while minimizing injury risk.
Tips: Enter the weight you lifted in pounds and the number of repetitions you completed with that weight. Use a weight that challenges you but allows you to maintain proper form.
Q1: How accurate are 1RM estimation formulas?
A: While not perfect, formulas like Brzycki provide reasonably accurate estimates (within 5-10%) for most individuals when using weights that cause failure within 1-10 reps.
Q2: Should I test my true 1RM instead?
A: True 1RM testing carries higher injury risk and requires proper technique and spotting. Estimation formulas provide a safer alternative for most trainees.
Q3: Does this work for all exercises?
A: While primarily designed for compound exercises like leg press, these formulas work best for exercises where technique remains consistent across different loads.
Q4: How often should I recalculate my max?
A: Recalculate every 4-6 weeks as your strength changes, or whenever you significantly increase the weight you can lift for a given rep range.
Q5: Are there limitations to this calculation?
A: Accuracy decreases with very high rep ranges (>10) and may vary based on individual fatigue resistance and exercise technique.