Energy Flashcards
What is the underweight and overweight BMI values?
BMI < 19 is underweight
BMI > 25 is overweight
What is the Basal Metabolic Rate measured in?
kcal/day
How is the Basal Metabolic Rate (BMR) measured?
measured under standardized conditions (overnight fast, isothermic temperature, supine). (a.k.a. basal energy expenditure, BEE)
What is the Resting Metabolic Rate (RMR) meausred in?
kcal/unit of time
How do you measure the RMR?
similar to the BMR, but under less standardized conditions.
What is the Resting Energy Expenditure (REE) measured in?
kcal/day
How is the REE calculated
REE is the RMR plus the thermic effect of food. This is often estimated as RMR + 10%, or RMR x 1.1
What are the units of Total Energy Expenditure
kcal/day
How is Total Energy Expenditure (TEE) calculated
TEE is the REE plus energy expended in physical activity, wound repair, etc.
TEE = REE x 1.2 for a healthy sedentary adult
TEE = REE x 1.4 for a healthy active adult
TEE = REE x 1.6 for recovering from trauma
What are the three components of energy expendiature?
Energy Expenditure of Physical Activity, Thermic Effect of Food, Basal Metabolic Rate
What energy expenidure takes usees the most?
BMR
How is metabolism measured?
Direct calorimetry is the gold standard.
How is ACTUALY metabolism measured?
Indirect calorimetry is much more practical.
What does Indirect calorimetry measure
The volume of inspired and expired air
The concentrations of O2 and CO2 in the inspired and respired air
What is dietary thing is least oxidazed and has the lowest RQ?
FAT!
Least oxidized (most reduced) dietary fuel
Requires more O2 inhaled for each CO2 exhaled
RQ is lowest
