Calculating your metabolism

By Dr Kelly

June 27, 2023

Calculating Your Metabolism, Some of the things we can measure

Resting Metabolic Rate (RMR)

Resting metabolic rate is the amount of energy expended by the body while at rest. It represents the energy required for essential physiological functions such as breathing, circulation, and maintaining body temperature. Measuring RMR provides information about an individual's baseline energy expenditure and can help determine daily calorie needs.

Respiratory Quotient (RQ)

Respiratory quotient is the ratio of carbon dioxide produced to oxygen consumed during metabolism. It provides insights into the relative contribution of different fuel sources (carbohydrates, fats, and proteins) to energy metabolism. An RQ closer to 1 indicates a greater reliance on carbohydrates, while an RQ closer to 0.7 suggests a greater reliance on fats.

Substrate Utilization Rates

Substrate utilization rates quantify the body's utilization of carbohydrates, fats, and proteins for energy production. By analyzing the proportions of different fuel substrates metabolized during metabolism, substrate utilization rates provide insights into metabolic flexibility and efficiency.

Mitochondrial Function

Mitochondrial function refers to the efficiency of mitochondria, the energy-producing organelles within cells, in generating ATP (adenosine triphosphate), the body's primary energy currency. Assessments of mitochondrial function may include parameters such as mitochondrial respiration rate, ATP production rate, and mitochondrial membrane potential.

Energy Expenditure:  

Energy expenditure represents the total amount of energy expended by the body over a specified period, including both resting metabolic rate and additional energy expenditure from physical activity. Measuring energy expenditure helps determine total calorie needs and can inform weight management and fitness goals.

Metabolic Efficiency

Metabolic efficiency refers to the body's ability to convert food into energy efficiently. By assessing parameters such as metabolic rate, substrate utilization, and mitochondrial function, bioenergy testing can provide insights into metabolic efficiency and identify potential imbalances or dysfunctions affecting energy metabolism.

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The bioenergy testing. We evaluate your lung capacity, we evaluate your breathing. We measure the carbon dioxide and oxygen ratios. And we can calculate, based off of that, your resting metabolic rate. So how many calories actually, your body burns over a 24 hours period of time without exercise. We go off of generic protocols, and you and I may be similar in size. My metabolism might be 1800. Your metabolism might be 1200. And that plays a huge role in knowing how healthy are you, how efficiently are you burning things for energy? And it's not that either one of them are good or bad.It's different. Yet, if you and I both go to the gym, we're probably both told the same information to say, your metabolism is this based on your height and your weight. That's not true.

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About the author

Dr. Kelly has 25 years of expert medical experience caring for the sickest of the sick people in critical care (including ICU, Heart surgery, Heart & Lung transplant surgery, as well as cardiology). She is a clinical specialist who has taken care of and trained others to care for the critically ill/the elderly and developed many screening and preventative programs to help improve the health of the population. The reality is that most people just don't have to be that sick. or stay that sick. So, Dr. Kelly decided to change the focus of the care she provided: to prevent, reverse and restore the health of individuals.

Dr. Kelly

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