Nutrition of Fat

Question 1

Way may fat be used as an energy source?

Answer 1

Can’t be used until the start of the kerb cycle.
More energy dense but synthesises at a slower rate than glycogen.
Used in exercise over 2h.
Aerobic due to more O2/g than glycogen

Question 2

What increases the rate of lipolysis?

Answer 2

Adrenaline

Question 3

How does lipolysis occur?

Answer 3

Acyl CoA needs a carrier (carnosine) and transporter protein (translocate).
Inside the mitochondria matrix Acyl CoA is used for B-oxidation.
Fatty acid is converted to more Acyl CoA by Acyl CoA synthase.

Question 4

Explain the control points of B-Oxidation

Answer 4

Glycogen synthesis and breakdown.
PFK regulation controls rate of glycolysis.
Fatty acid availability.
Regulating pyruvate dehydrogenase.
This is to ensure metabolic systems and processes maintain homeostasis for exercise.

Question 5

What are endurance training adaptions?

Answer 5

Physiological, structural, biochemical.
More B-oxidation to allow more glycogen so can be used when needed.