calculate_bmi: Calculate body mass index

In MarijnJABoer/befitteR: A bundle of health, fitness, food and body related equations, formula's and more, so you can become fit

Description

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The BMI has been useful in population-based studies by virtue of its wide acceptance in defining specific categories of body mass as a health issue The output is a measure. BMI has severe limitations for estimating body fat mass. Pleasure see calculate_bfp for that.

Usage

calculate_bmi(weight, height)

Arguments

weight	weight in kg
height	height in cm

Details

Note that normally height input should be in meters for the Body Mass Index, but in consistency to the other functions of befitteR height takes the input in centimeters.

The table below shows the categories, designed by the World Health Organization (WHO) on BMI values for adults. It is used for both men and women, age 18 or older.

Categories of BMI
Underweight	15-19.9
Normal weight	20-24.9
Overweight	25-29.9
Preobesity
Class I obesity	30-34.9
Class II obesity	35-39.9
Class III obesity	>=40

The calculation is based on the following equation by Lambert Quetelet in the 1830s:

BMI = \frac{weight}{height^{2}}

Value

Body Weight Index in kg/m^2^

References

Nuttall, Frank. (2015). Body Mass Index. Nutrition Today. 50. 1.

Examples

calculate_bmi(70, 180)

MarijnJABoer/befitteR documentation built on April 24, 2020, 5:43 a.m.