lthrmodule

Module designed for the calculation of cardiac parameters and to have the minimum of dependencies with other modules and to be as fast and light as possible.

| Function | Parameters | Return | |---|---|---| | TheoricalMaxHeartRate | age: Number gender: {'m', 'f'} | Number | | LTHRZones | age: Number gender: {'m', 'f'} sport: {'c', 'r'} | Object: {"zone1": Number,"zone2": Number,"zone3": Number,"zone4": Number,"zone5": Number} | | HeartRateExtractor | file: FIT file | Array: ['Number', 'Number', 'Number', 'Number', 'Number', 'Number'] | | SpeedExtractor | file: FIT file | Array: ['Number', 'Number', 'Number', 'Number', 'Number', 'Number'] | | LTHRZone | age: Number gender: {'m', 'f'} heartRate: Number sport: {'c', 'r'} | String: {zone1, zone2, zone3, zone4, zone5} | | LTHRZonesPercentage | age: Number gender: {'m', 'f'} sport: {'c', 'r'} arr: Array of Numbers from HeartRateExtractor function | Object: { z1: Percentage, z2: Percentage, z3: Percentage, z4: Percentage, z5: Percentage } |

Instalation

• NPM: npm i lthrmodule
• Yarn: yarn add lthrmodule
• PNPM: pnpm add lthrmodule

How to Use

• TheoricalMaxHeartRate: Returns a number that is the person's maximum theoretical number of beats per minute

const { TheoricalMaxHeartRate } = require('lthrmodule')
console.log(TheoricalMaxHeartRate(23, 'm'))
// Should return 197

• LTHRZones: Returns a JSON object with the upper bounds heart zones for the user characteristics.

const { LTHRZones } = require('lthrmodule')
console.log(LTHRZones(23, 'm'))

• HeartRateExtractor: Returns an array of numbers with the heart rate for each iteration of time.

const fs = require('fs')
const { HeartRateExtractor } = require('lthrmodule')
const data = fs.readFileSync('./file.fit', 'UTF-8');
console.log(HeartRateExtractor(data))
// Should return a JSON array of numbers 

• SpeedExtractor: Returns an array of numbers with the speed for each time iteration.

const fs = require('fs')
const { SpeedExtractor } = require('lthrmodule')
const data = fs.readFileSync('./file.fit', 'UTF-8');
console.log(SpeedExtractor(data))
// Should return a JSON array of numbers 

• LTHRZone: Returns a string with the heart zone in which the person is located for the given data.

const { LTHRZone } = require('lthrmodule')
console.log(LTHRZone(23, 'm', 184))
// Should return zone4

• LTHRZonesPercentage: Returns a JSON object with the heart zones and the percentage of time the user has been in.

const fs = require('fs')
const { LTHRZonesPercentage, HeartRateExtractor } = require('lthrmodule')
const data = fs.readFileSync('./file.fit', 'UTF-8')
console.log(LTHRZonesPercentage(23, 'm', HeartRateExtractor(data)))

At this time the only devices compatible are Decathlon HR Dual Band and systems that use the same data names.

And only cycling and running are available as sports.