People can also calculate their RMR using an online calculator, such as the one provided by ACE, here. Examples include the Cunningham equation, which estimates RMR, and the Katch-McArdle equation, which estimates BMR. Other optionsĪ more athletic person may get a more accurate estimate using an equation that takes into account their lean body mass. Female: 9.99 x weight + 6.25 x height – 4.92 x age – 161Īccording to the ACE, the Mifflin-St Jeor equation is more accurate than the Revised Harris-Benedict BMR equation.Find out your RMR rate here and get your free day. Men: (88.4 + 13.4 x weight) + (4.8 x height) – (5.68 x age) Your Resting Metabolic Rate (RMR) is the rate at which your body burns energy when it is at complete rest.To calculate RMR, a person can plug the following values into the relevant sections of their chosen equation: Both provide a separate estimate for men and women. The ACE provide two equations that people can use to calculate their RMR: the Revised Harris-Benedict BMR equation, and the Mifflin-St Jeor equation. This technique will still estimate the number of calories a person’s body burns at rest but is much less restrictive Calculating RMR As a result, it is unlikely that a person could accurately calculate their BMR at home.Īs a simpler alternative, people can try calculating their RMR. Experts refer to this analysis as “calorimetry.” It is a way of measuring the number of calories a person’s body is using.Īccording to the American Council on Exercise (ACE), people rarely use BMR outside of clinical settings because the test must take place in a tightly controlled environment under stringent testing parameters. Because the testing conditions of measuring the RMR are less stringent than those required to measure the BMR, the RMR may be slightly less accurate than the BMR.īMR calculations involve analyzing the amount of oxygen and carbon dioxide a person breathes in and out. People do not need to fast or rest for an extended period in a controlled environment to get an estimate. (factor 1.2) Mild activity level: Intensive exercise for at least 20 minutes 1 to 3 times per week.This may include such things as bicycling, jogging, basketball, swimming, skating, etc. The RMR estimates the number of calories a person burns during a period of inactivity. undergoing monitoring in a darkened, temperature-controlled room.sleeping for 8 hours prior to testing upon waking. However, to get an accurate estimate, a person must undergo monitoring in a clinical setting under tightly controlled conditions. The BMR estimates the minimum number of calories a person needs each day to sustain their basic life functions should they rest for the entire 24 hours of a day. However, the two tests differ slightly in what they estimate and what the test involves. They can help you determine the right caloric intake and activity level for your individual needs and goals. Lean Mass: The portion of your weight that is lean (not fat).įat Mass: The portion of your weight that is fat.People often use the terms BMR and RMR interchangeably. Resting Metabolism: Resting Metabolism (RMR) (also known as Basal Metabolism or BMR) is the minimum calories your body needs each day just to perform its most basic functions. Lean Mass: The portion of your weight that is lean (not fat). Title: A title for these calculator results that will help you identify it if you have printed out several versions of the calculator. If you know your lean body mass, this calculator uses the formula developed by Katch and McArdle to give you a very good estimate of your resting metabolism (RMR) (also known as basal metabolism or BMR), which is the minimum calories you burn each day for your body to keep everything functioning. Given my lean mass percentage, what is my resting metabolism (or how many calories would I burn each day even if I didn’t move a muscle)?
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