How does training increase fat oxidation?
1) Increased capillary density and an increase in the number of oxidative enzymes in trained muscle
2) Increased capillary density, which enhances FA delivery to the muscle
3) Increased FA concentrations, which may facilitate uptake of FAs across the sarcolemma
4) Increased carnitine concentration, which facilitates the transport of FAs into the mitochondria
5) Increased concentration of fatty acids increases their utilization