People on this forum will debate the importance of isolations. It seems that the longer you have been doing HST, the less you do them. IMO, the only important isolations are shrugs, calf raises, and ab work.
If you load up heavy on compounds and do enough sets, the significance of an isolation exercise such as skullcrushers or barbell curls will be lessened. How many reps will you actually be able to do? At this point, you may be overworking your arms or hitting fatigure. If you are able to do a complete set or two, then you didn't workout hard enough with the compounds.
In regards to that thinking, Fausto came up with an isolations on your off days type of cycle. I dub it "Faustonian." It involves doing isolation workouts on "off" days such as Tuesday and Thursday on the standard MWF workout schedule where you would do compounds only.
My past two cycles were of this type. Albeit a cutting process, people - specifically girls - have pointed out about my arms getting bigger. I suppose it worked out. I recall it went pretty well for Fausto too. I won't do a cycle like that again till the winter time when I will be on a decent bulk and truely see if it works better than a standard cycle.
Sorry for the tangent...
My feelings about this have changed. Why not do a 6x/week or 12x(am-pm split)/week cycle of only compounds? Wouldn't this be better for overall hypertrophy? OR - is this approaching the point of overtraining? If you read the Pimp My HST e-book, it is pointed out that 12x/week is the best if you can manage it correctly.
I'll stop there and wait for the replies.
In 11 months, what I thought the best way to workout has totally changed. I have this forum to thank for it.
-Colby