Chapter 3 - Energy Balance Flashcards
(9 cards)
0
Q
Which good components provide energy? And how much
A
- carbohydrate 17 kj/g
- protein 17 kj/g
- lipids 37 kj:g
- alcohol 29 kj/g
1
Q
Define energy
A
Theccapacity to do work - Whitney et al. 2011 p 6
2
Q
What is a joule?
A
One joule is the energy used to move one kilogram one meter by a force of one newton
3
Q
How to covert kilocalories and kilo joules
A
Calorie to joule = x 4.2
Joule to calorie = x 0.24
4
Q
What is basal metabolism
A
The energy needed to maintain life when a body is at complete digestive physical and emotional rest
5
Q
What is thermogenesis
A
The generation of heat. Three main categories:
- energy expended for basal metabolism
- energy expended for food consumption
- energy expenses for physical activity
6
Q
What is the BMR
A
Basal metabolic rate: rate at which the body expends energy on basal metabolic activities
7
Q
Components if energy consumption
A
- Basal metabolism
- Physical activity
- Thermocouple effect of food: an estimation of the energy required to process food (digest, absorb, transport, metabolism etc)
8
Q
How to calculate BMR
A
Men (18-29 years)
(74 x weight) + 2754)
Women 18-29 years
(62 x weight + 2036)
