Muscle fiber ratios:
Calf muscles
-soleus (90% slow twitch)
-Gastrocnemius (50/50 fast/slow)
Forearm muscles
-Flexor Carpi ulnaris, extensor Pollicis Brevis, extensor Carpi ulnaris, extensor digitorum, extensor carpi radialis brevis, flexor carpi ulnaris, Palmaris longus, flexor carpi radialis, abductor pollicis longus
all of these are almost entirely slow twitch. Therefore, forearms and calves respond extremely well to high reps. I go heavy with both of these often, but the majority of training for these parts should be high high reps until you have to drop the weight from the pump.
Abs should be trained heavy, they wont grow too big like JB said, but having muscle there is a huge advantage. |