What is resting metabolic rate?

What is resting metabolic rate?

Credit: Tanita Europe Blog

Resting metabolic rate (RMR) is the amount of energy the body burns during rest and the measurement is sometimes used as a benchmark for how efficiently your metabolism is working.

If you are focussed on maintaining or developing your fitness, you might be wondering what is a good resting metabolic rate and whether you should be trying to improve yours.


What is an average resting metabolic rate?
There are lots of different ways of measuring resting metabolic rate outside of a clinical setting and we are all different so there is no easy graph or table to see how you measure up. However, a rough, average, guide is that your resting metabolic rate will require around 1600 calories for men and 1400 calories for women, per day.

 

Resting metabolic rate vs basal metabolic rate
Basal metabolic rate (BMR) and RMR are both ways of assessing the calories used for your body to function.  The BMR is a more restrictive measurement of the energy your body uses for basic functions, such as breathing, blood circulation and organ functions; whereas the resting metabolic rate is your energy expenditure during a normal resting or non-exercising state. To measure your BMR at home, you can use one of the Tanita body composition scales like the RD-545.

 

Resting metabolic rate formula

There are several different formulas for calculating your RMR. In a lab setting your RMR will be measured by monitoring your oxygen consumption and carbon-dioxide production, but most of us will need a straight-forward approach and the frequently-used Katch McKardle calculation is shown below:

However, if you use several different online calculators you will get several different answers, so what is the point of understanding your RMR?

Many of us over estimate the number of calories our body needs and the number of extra calories that we need if we are exercising regularly. This can mean that over consumption of calories sabotages our other efforts to maintain a fit and healthy body.

Having an indication of your RMR will help you to assess whether your diet is right based on the calories your body actually needs, so understanding it is useful to help you achieve personal goals such as losing or gaining weight.

 
Can working on your RMR help you lose weight?
Increasing your RMR might seem like a silver bullet when it comes to weight loss; however increasing your RMR and weight loss do not go hand in hand, in fact one of the few ways to definitely increase your RMR is to put on weight!

 

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