399a8859_ceps__and_Shoulders___T_Nation__Type_I_Fibers
[0] Activity Used for [Type IIa Fibers] Long-term anaerobic [Type IIb Fibers] Short-term anaerobic [Type I Fibers] 
Aerobic
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
Muscle Specific Hypertrophy: Chest, Triceps, and Shoulders | T Nation
Type I Fibers