Module 2 - Energy Requirements, Physical Activity, Weight and Health Flashcards
(42 cards)
What does TEE stand for?
total energy expenditure
What does TEE include?
- basal metabolism
- physical activity
- thermic effect of food
- thermoregulation
Which accounts for the most of TEE?
basal metabolism
What accounts for 20-30% of TEE?
physical activity
What can effect TEE?
different life stages (pregnancy, lactation)
What is basal metabolism?
- energy expended by internal processes during a period of complete rest
- in fasting state (10 hours after meal)
What is resting metabolism?
nonfasting state
Patients needs may be affected by what?
different areas of their body (ex: liver, brain, heart, etc)
To safely increase RMR what must be increased?
skeletal muscle-to-fat ratio
Men have a greater _________ : _________ ratio than women
muscle : adipose
RMR is higher in ______ and decreases with ______
infants; age
A 200 Ib person with 12% body fat would be expected to have an RMR that was ____ compared to another person who weighed the same yet with 25% body fat?
a. lower
b. higher
c. same
b. higher
RMR is most closely correlated with what?
FFM
FFM =
body weight - fat mass
Physical activity is the ____________ component of TEE
most variable component of TEE
How much does physical activity contribute to TEE?
15-30%
Spontaneous non-exercise activity takes up to how many kcal per day?
~100-700 kcal/day
Thermic Effect of Food varies by what?
varies amount and composition of food
Why does protein have a higher metabolic cost than carbohydrates and fat?
due to metabolism of amino acids
TEF is estimated as
10% of total energy intake
Thermoregulation can be affected by what?
- changes in environmental temperature
- changes in radiant energy
What is the goal of thermoregulation?
to maintain constant or near-constant body temperature
How does growth influence energy expenditure?
energy costs associated with tissue deposition
What is the estimated change in calorie need during the 1st 6 months of lactation?
+330 calories