get_bmr: Retrieve estimated basal metabolic rate for an individual

In paulhibbing/PAutilities: Streamline Physical Activity Research

Retrieve estimated basal metabolic rate for an individual

Description

Retrieve estimated basal metabolic rate for an individual

Usage

get_bmr(
  Sex = c("M", "F"),
  Ht = NULL,
  Wt,
  Age,
  verbose = FALSE,
  RER = NULL,
  equation = c("ht_wt", "wt", "both"),
  kcal_table = c("Lusk", "Peronnet", "both"),
  method = c("Schofield", "FAO", "both"),
  MJ_conversion = c("thermochemical", "dry", "convenience", "all"),
  kcal_conversion = 5
)

Arguments

Sex	The individual's sex
Ht	The individual's height, in meters
Wt	The individual's weight, in kilograms
Age	The individual's age, in years
verbose	Logical. Should processing updates be printed?
RER	numeric. The respiratory exchange ratio
equation	The equation to apply
kcal_table	The table to reference for converting kilocalories to oxygen consumption. See get_kcal_vo2_conversion
method	The calculation method to use
MJ_conversion	The value to use for converting megajoules to kilocalories. Defaults to thermochemical.
kcal_conversion	numeric. If RER is NULL (default), the factor to use for converting kilocalories to oxygen consumption

Value

a data frame containing predictions of basal metabolic rate in one column, along with additional columns that indicate how the predictions were obtained (e.g., which sources and conversions were applied)

References

Schofield, W. N. (1985). Predicting basal metabolic rate, new standards and review of previous work. Human nutrition. Clinical nutrition, 39, 5-41.

Examples

# Get BMR for an imaginary 900-year-old person (Age is only
# used to determine which equations to use, in this case the
# equations for someone older than 60)

get_bmr(
  Sex = "M", Ht = 1.5, Wt = 80, Age = 900, equation = "both",
  method = "both", RER = 0.865, kcal_table = "both",
  MJ_conversion = c("all")
)

get_bmr(
  Sex = "M", Ht = 1.5, Wt = 80, Age = 900, MJ_conversion = "all",
  kcal_conversion = 4.86
)

get_bmr(
  Sex = "M", Ht = 1.5, Wt = 80, Age = 900, method = "FAO",
  kcal_conversion = 4.86
)

paulhibbing/PAutilities documentation built on July 5, 2025, 1:33 a.m.