supination and pronation of the wrist for bicep movements??

[110%]

ok most agree, that for such bodypart as the chest you cannot isolate a certain part of the chest, as you cannot recruit just certain parts of muscle fibers, rather the muscle as one contracts to move the weight. thus most say you cannot change, or target certain areas of a muscle.

well what is your views on supinating the wrist to work the inner head of the bicep, and pronating the wrist to work the outer head of the bicep? does the one or other really place more emphasis on the targeted head?

 

[bignate73]

bit off base on that theory. supination to pronation bring about a shift from the biceps brachii, to the brachialis to finally the brachioradialis, respectively.

the trick here, AGAIN, is feel. the brachialis sits deep and slightly lateral to the biceps brachii, which gives the "feel" of the outer head being targeted.