Interesting read mate, well written too! Not something I'd really thought much about but after reading that it does make quite alot of sense.
Could you give examples of routines one would use when training for each adaptive possibility in P-ana and P-cat phases? I imagine something like a 5x5 routine might be for strength or possibly size, but what would one use if they were training for muscle maintenance or purely size, for example?
I certainly can

. Read on:
Following up from the previous piece, I want to give a very brief run-down of the various means you can use to encourage the 7 adaptations that are possible while in P-Ana and P-Cat.
For the 3 potential options that are available while in P-Ana, trainers have the choice of either specialising on one of these adaptations, or on using a conjugate (i.e. sequenced), or concurrent (i.e. simultaneous) approach.
Whether you choose to specialise or not will depend on your broader goals. Those with a pure body composition goal (e.g. bodybuilders, summer-time beach-bod coveters) will tend to go for a specialised approach, while those more interested in performance (e.g. athletes, sportspeople, powerlifters) will tend to go for a conjugate or concurrent approach (n.b. I'm using the term 'conjugate' in the technical sense here; not to be confused with the looser way Westside Barbell use the term - when they actually mean 'concurrent' !).
For specialising on option 1 (muscular strength): train 3 - 4 sessions/week, hitting each lift at least twice/week. Focus on compound lifts (e.g. squat variations, deadlift variations, bench variations, dips, chins, pull-ups, rows, overhead press variations) - do not focus on bodyparts. Lift mostly in the 75-90% of 1RM range, with the occasional foray into circa 100% territory. Training volume should be progressive for beginners, and cycled for intermediates and advanced. Volume should average 60 -80 lifts/session (at the previously mentioned percentages).
So long as your program conforms to these principles, arrange things any way you prefer.
For specialising on option 2 (myofibrillar hypertrophy): train 3 - 5 session/week, hitting each lifting plane* twice/week. Focus on compound lifts, but include some isolation moves at the end of each session (75% compound/25% isolation is a reasonable split). For compound moves, lift mostly in the 70 - 85% of 1RM range, with the occasional foray into some doubles and triples @ around 90%. For isolation lifts, do not go lighter than 8RM - we're still trying to build contractile muscle here - not just fill it up with gloop

! Training volume should be progressive for beginners, and cycled for intermediates and advanced. Volume should average 90 -120 lifts/session (including the higher repetition isolation sets).
For specialising on option 3 (sarcoplasmic hypertrophy): train 3 - 6 sessions/week, hitting each bodypart twice/week. Focus equally on compound and isolation lifts, including machines. Lift mostly in the 40-70% of 1RM range (which basically means that you'll be performing at least 10 reps/set). Volume should average 250 - 350 lifts/session. Oh, and by the way, if you're specialising on this option, you are dead to me.
For combining options 1 through 3: train 3 - 4 sessions/week, hitting each lifting plane twice/week. Focus on compound lifts, but include some heavy isolation and light isolation moves at the end of the workout (65/20/15% is reasonable). Compound lifts should be mostly in the 5-7RM range. Volume should be 120-150 lifts/session.
There are heaps of good training templates out there that exemplify this approach including 5x5, DC training, and Westside for skinny bastards.
Now, for the (relatively) less enjoyable land of P-CatYou'lll notice that these approaches are simply derived from options 1-3, and just involve manipulations of volume
For specialising on option 4 (strength maintenance): as with option 1 except - Progressively revise volume downwards as you begin to lose strength. At final stages of diet, you can go as low as 24-32 lifts/session. Keep poundages in the 75 - 90% of 1RM territory.
For specialising on option 5 (muscle maintenance): as with option 2 except - Progressively revise volume downwards as you begin to lose strength. At final stages of diet, you can go as low as 36-48 lifts/session. Keep compound lift poundages in the 75 - 90% of 1RM territory. Remember, we're not trying to build muscle here - the only purpose of training while in P-Cat is to encourage the body to preference fat catabolism over protein catabolism. Too much training will do the exact opposite of that.
For specialising on option 6 (strength deterioration): Ensure that you reduce your poundages as you start to get weaker from the diet. This will down-regulate neural output and enhance weakness and lethargy. It also helps to dramatically increase cardio; this enhances protein breakdown and loss of anaerobic power. Throw in some sleep deprivation, and you'll be as weak as a kitten in no time.
For specialising on option 7 (muscular atrophy): as with option 3, only train lighter and more frequently (6 session/week is ideal). It is imperative that you do not attempt to lift anything heavy in this time, as this may encourage your body to preserve lean body mass. It is also crucial that you do not allow your body any opportunity to rest and recuperate; you must pummell it with mercilless workloads and frequency, and then you must humiliate it with hours of energy-sapping cardio. Consistency is the key here; if you can keep it up, you'll be stringy and flat before you can say "Clarence Bass".
Hope this helps. If you're looking for specific programs that conform to these principles, check out this link:
http://forum.bodybuilding.com/showthread.php?p=490796901Cheers
Tubs
* A lifting plane is the broader movement category into which specific movements fit. For example, you have horizontal push (which includes bench press, dips, dumbell inclines etc.) and vertical pull (which includes chins, pull-ups, lat-pull-downs etc.). You also have lower body push (squats, leg preses, lunges) and lower body pulls (deadlifts variations, good mornings).