1. Transition: Food Fuels

2. SOURCES OF ENERGY (fuel)
1. CHO
2. FATS
3. PROTEIN

3. CARBOHYDRATES (CHO) Food sources: Converted to glucose
Breads
Pasta
Cereals
Rice
Fruit (some)
Converted to glucose
Stored as glycogen in muscles and liver
Major source of ATP production during exercise
Do not require oxygen
Fast/simply breakdown for energy release

4. FATS (triglycerides) Food sources Converted to fatty acids
Dairy products
Meat
Vegetable oils
Nuts
Converted to fatty acids
Stored as trigylcerides in fat cells located throughout the body and within skeletal muscles
Primary source of ATP under resting conditions, used as a secondary source of energy during exercise
Required oxygen to break it down
Provides much more energy compared with CHO

5. PROTEIN (a.a.’s) Food Source The building blocks of tissue
Meat
Fish
Dairy products
eggs
The building blocks of tissue
Basic structural units of proteins are amino acids
Found in muscle fibres and cell tissue
Not ordinarily used as a food fuel during exercise (negligeable %), however may occur in ultra-endurance events

6. FUEL STORED AS SITE
CHO glucose blood
glycogen liver
muscles
FATS fatty acids blood
triglycerides muscles
adipose tissue around body
PROTEIN muscles around body
amino acids