YOUR Drug-Free Muscle and Strength Potential: Part 2 / James Riley

James Riley

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SBS calcs

Edited

Mar 7, 2023

Fork of YOUR Drug-Free Muscle and Strength Potential: Part 2

viewof currentWeight = Inputs.number({ label: "Current Weight (kg)", value: 0 })

viewof wrist = Inputs.number({ label: "Wrist (in cm)", value:0 })

viewof ankle = Inputs.number({ label: "Ankle (in cm)", value:0 })

viewof squat = Inputs.number({ label: "Squat (kg)", value:0 })

viewof bench = Inputs.number({ label: "Bench (kg)", value:0 })

viewof deadlift = Inputs.number({ label: "Deadlift (kg)", value: 0 })

optimalLean = butt(height, wrist, ankle, bfPercent)

optimalBF = sex == "male" ? 12 : 20

currentLeanMass = (1 - bfPercent / 100) * currentWeight

bfPercent = navy(sex, height, waist, neck, hip)

function navy(sex, height, waist, neck, hip = null) {

// Source: https://www.bodybuilding.com/fun/kurilla5.pdf

const inch = 2.54;

// convert cm input to inches.

// Goddamit USA Navy

height = height / inch;

waist = waist / inch;

neck = neck / inch;

hip = hip / inch;

let bf = "";

if (sex == "male") {

bf = 86.01 * Math.log10(waist - neck) - 70.041 * Math.log10(height) + 36.76;

} else if (sex == "female") {

bf =

163.205 * Math.log10(waist + hip - neck) -

97.684 * Math.log10(height) -

78.387;

} else {

bf = "error: sex was not male or female";

}

return bf;

}

function butt(height, wrist, ankle, bf) {

const inch = 2.54;

let h = height / inch;

let w = wrist / inch;

let a = ankle / inch;

const lbs =

h ** 1.5 *

(Math.sqrt(w) / 22.667 + Math.sqrt(a) / 17.0104) *

(bf / 224 + 1);

return lbs / 2.204623;

}

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