While the two (RMR and BMR) are fairly similar and often used interchangeably, there are some key differences between the two.
BMR:
BMR Definition: The minimum amount of energy your body needs to function at rest - literally keeping you alive (breathing, digestion, etc.).
BMR is Influenced by: Genetics, sex, age, and body composition (more muscle mass = higher BMR).
BMR is Best Measured: Usually in a clinical setting under very specific conditions (fasting, lying down in a cool room).
Use: Provides a baseline for understanding your overall calorie needs.
RMR:
RMR Definition: The actual number of calories your body burns at rest in everyday conditions.
RMR Includes: BMR plus additional energy used for basic daily activities like walking, talking, or even fidgeting.
RMR is Influenced by: Same factors as BMR, plus activity level, hormonal changes, and environmental temperature.
RMR is Best Measured: Accurately through metabolic testing (VO2 Max) or the use of online RMR calculators (although not always reliable).
Use: More practical for setting calorie goals for weight management, muscle building, or maintaining your current weight.
Key Differences between Basal Metabolic Rate and Resting Metabolic Rate:
Specificity: BMR is the theoretical minimum, while RMR reflects your actual, slightly higher calorie burn.
Measurement: BMR needs stricter conditions, while RMR can be estimated or measured in more flexible settings.
Application: BMR is a baseline, while RMR guides daily calorie planning.
Clearly, there are a few key differences between the two. Based on your goals, BMR may be enough. However, for those looking to optimize their training and nutrition to match their goals, RMR is right for you.
Interested in getting accurate and reliable results based on your actual needs and training thresholds? Book now with VO2 MAX SF.