Energy And Nutrients Flashcards
5 functions of energy
- Physical activity, making muscles move
- pregnancy, lactation and recovery for illness
- growth and repair of body tissues
- maintaining constant body temperature, 37°
- bodily functions eg. Heartbeat, breathing and digestion
Energy per 1g of fat
9 kcal
Energy per 1g of carbohydrate
3.75kcal
Energy per 1g of protein
4Kcal
Recommended percentage of carbs in our diet
50%
Recommended percentage of free sugars in our diet
No more than 5%
Recommended percentage of total fat in our diet
No more than 35%
Recommended percentage of saturated fat in our diet
No more than 11%
Recommended percentage of protein in our diet
15%
Why are starchy carbohydrates the best way of meeting energy needs
Keep blood sugar levels constant leading to a feeling of fullness
Provide other nutrients such as B group vitamins which assist in energy release
How much energy is needed in men and women
2,500kcals men
2,000kcals women
What is the BMR
Basal metabolic rate
Amount of energy body needs in order to maintain basic functions such as breathing and heartbeat and maintain a constant temperature when totally at rest
Accounts for 75% of a persons energy needs
What are physical activity levels (PAL)
People who exercise regularly or have physically demanding jobs need more energy than those in sedentary jobs
Can affect BMR
