wilks-calculator

This library calculates performs calculations with the Wilks coefficient, which is a coefficient used by the International Powerlifting Federation to determine the relative strength of competitors. They also use this coefficient for determining the qualification requirements for championships.

Installation

npm install wilks-calculator

Usage

const wilksCalculator = require('wilks-calculator')

wilksCalculator.calculateWilksScore(gender, bodyWeight, liftedWeight, [unitType]);

• gender (string) - 'm' for Male and 'f' for Female
• bodyWeight (number)
• liftedWeight (number)
• unitType (string) - 'metric' or 'imperial' (optional)

wilksCalculator.calculateWeightToLift(gender, bodyWeight, wilksScore, [unitType]);

• gender (string) - 'm' for Male and 'f' for Female
• bodyWeight (number)
• wilksScore (number)
• unitType (string) - 'metric' or 'imperial' (optional)

wilksCalculator.calculateNeededBodyWeight(gender, liftedWeight, wilksScore, [unitType]);

• gender (string) - 'm' for Male and 'f' for Female
• liftedWeight (number)
• wilksScore (number)
• unitType (string) - 'metric' or 'imperial' (optional)

Examples

calculateWilksScore

var femaleWilksScore = calculateWilksScore('f', 60, 300);
// Returns 334.47

var maleWilksScore = calculateWilksScore('m', 90, 500);
// Returns 319.20

var femaleImperialWilksScore = calculateWilksScore('f', 132, 660, 'imperial');
// Returns 334.31

var maleImperialWilksScore = calculateWilksScore('m', 176, 882, 'imperial');
// Returns 273.49

calculateWeightToLift

var femaleTotal = calculateWeightToLift('f', 60, 350);
// Returns 313.93 (kg)

var maleTotal = calculateWeightToLift('m', 80, 350);
// Returns 512.67 (kg)

var femaleImperialTotal = calculateWeightToLift('f', 132, 660, 'imperial');
// Returns 690.97 (lbs)

var maleImperialTotal = calculateWeightToLift('m', 176, 350, 'imperial');
// Returns 1128.74 (lbs)

calculateNeededBodyWeight

var femaleBodyWeight = calculateNeededBodyWeight('f', 300, 350);
// Returns 56.6 (kg)

var maleBodyWeight = calculateNeededBodyWeight('m', 600, 350);
// Returns 113.2 (kg)

var femaleImperialBodyWeight = calculateNeededBodyWeight('f', 690, 660, 'imperial');
// Returns 131.62 (lbs)

var maleImperialBodyWeight = calculateNeededBodyWeight('m', 1128, 350, 'imperial');
// Returns 175.70 (lbs)

Tests

npm test