Energy Balance Flashcards
(21 cards)
What are the Energy expenditures?
50-65% from BMR
25-50% voluntary activity
5-10% thermic effect of food (increased metabolism after a meal)
How to calculate Estimation needs for energy
Men weight (kg) x24 kcal/day Woman weight (kg) x22 kcal/day
Healthy waist numbers
Men less than 40inches
Woman less than 35inches
Is lean tissue more dense than fat?
Yes
Body fat percentages
Men 12-20%
Woman 20-30%
How to calculate BMI
Weight (kg)/ (height (m))^2
Normal BMI
18.5-24.9
Underweight BMI
Less than 18.5
Over weight BMI
25-29.9
Obese class 1
30-34.9
Obese class 2
35.9-40
Extreme obese
40+
Chance of obesity if parents obese
40-70%
What are the 3 metabolic theories
Enzyme
Fat cell #
Set point
Enzyme theory
Some people have more lipoprotein ligase (LPL)
Fat cell # theory
Fat cell number increases faster in obese children than lean children
Set point
Body chooses a weight it wants to be
What is leptin?
Appetite suppressing hormone produced in fat cells.
Moderate calorie diet
1200-1500 cal/day plus exercise to preserve lean body mass.
1lb fat equals
3500 cal
Female athlete triad
Disordered eating
Amenorrhea
Osteoporosis