[0] Major Storage Fuel [Type IIa Fibers] Creatine phosphate, glycogen [Type IIb Fibers] Creatine phosphate, glycogen [Type I Fibers] 
Triglycerides
S l o w
S m a l l
H i g h
A e r o b i c
H o u r s
L o w
T r i g l y c e r i d e s