Firstly, many thanks for the responses guys, what you've both said has been pretty interesting.
Blink,
Actually I did think (up to) 30% was pretty substantial - as you pointed out it's almost a third and would potentially be useful on rest days. To be honest, upwards of 10% would be a very significant benefit in my view. I've read about enhancing workouts with visualization and mental exercises, but, well, basically I guess I always regarded it as an ancillary, semi-substantiated kind of thing, and hadn't realized it could be so effective. As you said it would be helpful to see how they evaluated the benefits and came to a 30% figure. Having said that I'm set on including more visualization and hypnosis anyway, I mean I don't think it could be detrimental or anything to try it out. Besides, even after the “honeymoon period” I still really feel like I should be doing something on rest days.
MN_FriendlyGuy,
I've been using hypnosis for relaxation (and general mental improvement) quite a lot and now that you’ve mentioned it I can see how a relaxed state might aid muscle repair. Having said that I've never really known a great deal about the process - basically I've just been fuelling the muscle repair and building with the obligatory protein-rich foods and amino acids, but beyond high-school biology stuff and the odd body-building book/article I'm pretty ignorant on this. The psychological aspects are definitely something I will include and amplifying any existing positive reinforcement sounds like a good idea.
By the way the second link you provided was interesting, especially some of this stuff:
“The surprise is the amount of traffic the other way, from top to bottom, called feedback. There are 10 times as many nerve fibers carrying information down as there are carrying it up....
....The top-down structure explains a lot. If the construction of reality has so much top-down processing, that would make sense of the powers of placebos (a sugar pill will make you feel better), nocebos (a witch doctor will make you ill), talk therapy and meditation. If the top is convinced, the bottom level of data will be overruled.”
The implication seems to be that the whole feedback thing is likely balanced in favour of top-down, which I hadn't realized. Heh, testing out the “Stroop effect” stuff was also pretty cool. Moreover the perception changes seem to have been backed by hard science, which is good, as I sometimes think it’s difficult to know whether a subject is merely consciously complying with a hypnotist or if the subject really is in an altered state and the suggestions have genuinely penetrated.
Uh anyway, slight digression, but again, thanks both for the information. =)