
Originally Posted by
Turkish Juicer
I wouldn't really advice working shoulders on a back day or a leg day, this split brings about more disadvantages than any possible advantage it may have for you on multiple levels regarding overall development, risk of injuries (with the back split) and so forth. Best split would be shoulders-triceps IMO.
Regarding your question: I don't see how anyone can possibly get away with a high volume training shoulder routine that only lasts for 30 min. A solid shoulder workout, whether HIT or HVT, should consist of a minimum of 4 exercises. Whether 30 min is good enough to get good results solely depends on a set of variables such as genetics, overall conditioning, training frequency and etc.