Does Body Volume Indexing Have What it Takes to Kill BMI?
The first thing that needs to be mentioned is that there are no exact answers here. There is no magic bullet that will give you a definitive answer. However, if you want to know what your body mass index (BMI) means in relation to your height, then read on!
What Is Your BMR?
Your basal metabolic rate (BMR) is the amount of energy your body uses every day to maintain your physical functions such as breathing, eating, moving around and so forth. If you weigh 150 pounds and have a normal resting heart rate of 60 beats per minute, then your BMR would be approximately 2,500 calories. This number does not include any food or drink you consume during the day.
If you were to lose 10 percent of your body weight, your BMR would decrease from 2,500 calories down to 1,800 calories. That’s right; you’d only be able to burn off 500 fewer calories than you do now. You could probably still go out and play some sports or exercise outside with minimal impact on your health because of this reduction in caloric intake. But let’s say that instead of losing 10 percent of your body weight, you lost 20 percent.
Your BMR would drop from 2,500 calories to 1,600. That’s a reduction of 900 calories per day. If you continued eating as much as you do now, you’d gain weight rapidly.
What Is Your RMR?
Your resting metabolic rate (RMR) refers to the number of calories your body burns when at rest. This accounts for roughly two-thirds of your total energy expenditure. As a general rule, your RMR correlates with your body mass: that is to say, the more tissue you have, the more energy that tissue needs.
The amount of time you’re active throughout the day doesn’t significantly impact your RMR. That’s why larger people still burn the same number of calories while sitting on the couch as someone who is much smaller. They may gain or lose weight because of their caloric intake though.
So, What Does This All Mean?
Sources & references used in this article:
Neurobehavioural correlates of body mass index and eating behaviours in adults: a systematic review by U Vainik, A Dagher, L Dubé, LK Fellows – Neuroscience & Biobehavioral …, 2013 – Elsevier
Functional limitations linked to high body mass index, age and current pain in obese women by UE Larsson, E Mattsson – International Journal of obesity, 2001 – nature.com
Measurement of serum leptin concentrations in university undergraduates by competitive ELISA reveals correlations with body mass index and sex by VTK Chow, MC Phoon – Advances in physiology education, 2003 – journals.physiology.org