Hi Frank! I am against isolation exercises. They "make the muscle stupid" and, in my opinion, if not performed with the utmost care (sacred rites), they lead to joint vices.
Having little time, I always favor multi-joint exercises.
Due to my physical build (ectomorph HG 1.87cm), if I train the triceps even with just one isolation exercise in addition to multi-joint ones, I become bulky and it leads to postural and joint disorders. And it certainly doesn't improve my piano playing.
I follow the theories of Poliquin and Tozzi on Natural B.B. closely; they are different but full of insights.
My training is aimed at hypertrophy and joint functionality. I had problems with ligament laxity in my left shoulder (I am left-handed) when I was 13, with several relapses. This led to acromioclavicular impingement problems, which I have resolved (at least until today) with dedicated exercises.
I love reading and researching in this field. Certainly not from "Men's Health" sources and other nonsense, but from authoritative books.
Regarding the issue of micro/meso/macro cycles, I am fed up with programming. I think that varying training even every two weeks, in a sensible way, is the healthiest and most advisable thing to do.
For an amateur like me, with the physique I have (and the joint problem I've had, and my passion for the piano), it makes no sense to aim at trying to bench press 180kg.
I have always preferred using dumbbells over a barbell. I have noticed that the barbell, whether you like it or not, forces you into movements that can be non-physiological.
Dumbbells are much more "foul" (tricky), if we want to say they are more dangerous for a pianist. Yet, if managed well, I can assure you they do their job. You become more master of the movement (if someone teaches you).
My testimony is not that of a bodybuilder under the influence of steroids and creatine, but rather that of a 26-year-old ectomorph guy who doesn't take supplements, who eats heartily 4-5 times a day, and has nonetheless had massive increases in terms of hypertrophy.
Regarding the issue of hormonal response, I have never read anything strictly scientific and therefore I don't believe it. Let me explain: nothing to say about the issue of increased GH, testosterone, etc., etc., but it is not written anywhere that you cannot have a similar increase also by working on smaller muscles or with supersets like I do.
Here is a funny link on the subject http://scoobysworkshop.com/squat-myths/
In short, they seem like "gym rat" things to me, like the obsession with casein before sleeping instead of "whey". And well, I would really like to read about a medical experiment conducted in this field, related to hypertrophy.
Or like the nonsense that too much aerobic activity burns muscle. In reality, studies done on triathletes, marathon runners, and other endurance sports say that the effects of muscle mass loss only occur due to overtraining.
Some little articles...
http://news.softpedia.com/news/Running-Reduces-Visceral-Fat-169202.shtml
http://healthland.time.com/2010/11/30/lessons-from-ultra-endurance-runners/
The problem of Overtraining is almost never addressed by gym trainers. Also because it is counterproductive.
I have always suffered from it. For this very reason, I have greatly rationalized the number and sets of exercises, and the duration. I have significantly extended recovery times. Sometimes even 10 days between one leg session and another.