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Strength Formula:
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The Strength Calculator measures how strong an individual's lift performance is compared to the average population, using standard deviation as a scaling factor. It provides a standardized score that indicates performance relative to norms.
The calculator uses the strength formula:
Where:
Explanation: The formula calculates how many standard deviations your lift is above or below the average, providing a standardized measure of strength.
Details: This calculation helps athletes, trainers, and fitness enthusiasts objectively assess strength levels, track progress, and compare performance against population norms for specific exercises.
Tips: Enter your lift weight, the average weight for your demographic, and the standard deviation. All values must be in kilograms and positive numbers (SD must be greater than 0).
Q1: What does a positive strength score mean?
A: A positive score indicates your lift is above average. The higher the positive number, the stronger you are compared to the average.
Q2: What does a negative strength score mean?
A: A negative score means your lift is below average. The lower the negative number, the weaker you are compared to the average.
Q3: Where can I find average and SD values?
A: These values are typically available from fitness studies, strength training databases, or gym statistics for specific exercises and demographics.
Q4: How should I interpret different strength scores?
A: Generally: ±1 SD = average, ±2 SD = strong/weak, ±3 SD = very strong/very weak compared to the population.
Q5: Can this be used for all types of lifts?
A: Yes, but you need appropriate average and SD values specific to each exercise (bench press, squat, deadlift, etc.) and demographic factors.