Kasper Stangerup said:This sounds like the kind of study I was referring to. I do know that you are a physiology professional, so I'm not doing anything other than repeating what I have been told (which I would argue is all you can ever do, unless you do the study your self).
Regarding the time frame, the original poster was worried over potential size loss until the excercises in F1 become sufficiently challenging. From his description it sounds as if he is quite strong, so he should be able to test out of a few of the PEs and soon find himself doing excercises that are sufficiently challenging. So, I would estimate a timeframe of about 4-8 months.
When I was partially paralyzed from a neck-injury some years ago, the affected muscles deflated in almost no time (I couldn't tense them at all, so loss of muscle tone was doubtless part of it). The condition persisted for some months, after which I began rehab and then, after a few more months, real strength training. It only took about three months from this point for me to reach my previous level of strength and size.
A similar course of events took place earlier in my life, in connection with a semi-serious disease which caused me to be bed-ridden but unable to sleep and with almost zero appetite for a prolonged period. I lost about 20 % of my bodyweight (and I was lean to begin with), and had to put a pillow on my chair because my glutes were almost gone.
However, once I had recovered from the disease itself, I regained my strength and size within about 6 months.
1) Agreed, though being exposed to a whole lot of different research and forming a sort of complete construct based on what we know so far) can help immensely with understanding what is going on with responses to exercise. I just try not to ever repeat what I am told without doing everything I can to dig into the topic first, to make sure my knowledge is either as complete as possible or to be sure it is up to date... so much changes as we keep learning, it's very hard to keep up with all of it when you follow multiple subjects!
2) That sounds really rough man, I hope you don't ever have to deal with that kind of situation again!
I don't think the OP has much to worry about, but if he is still unsatisfied I would suggest hitting a double or triple for one set with a working weight each training session, probably in the warm up. That will be enough to maintain strength while making one's way through the Foundation products, and won't wear you out or get your hurt.