I could be wrong but I think his recovery is probably more soft connective tissue and joint related more than his muscle being ready to lift again. I could be way off base though.
It is quite common in older trainees, and especially those with a high training age then to do a bit better lowering the frequency a bit. Often this has more to do with collagen production dropping off so connective tissue needs more time to recover. If you aren't going to drop some of the volume or intensity then you are definitely going to have to cut down on frequency. Another
For us if we want to train something twice a week then some very high rep blood flow work is a very good 2nd workout as it improves the recovery in the connective tissue via heightened circulation. I would look into "feeder" sets on the stuff you want to train more than once a week. Do them while having both pre, and intra carbs to really shove the nutrients into the muscles.
Also HGP be careful pressing 315 for someone with a problem shoulder and elbows there isn't much reason to be going that heavy. I would hate to see you re-injured because ego and enjoyment got a little out of hand. It feels great to push up the 3 plates until it doesn't so be careful.
We are in agreement- there are a bunch of factors and recovery does decline with age; not arguing that. I mean, I see my 91 year old grandmother and literally standing from a chair twice a day is so intense for her it is unwise to train her with much more volume than that. (too bad the "professional" therapists who come to her house can't see that, but that's another story)
I am just pointing out that recovery and training is a funny thing. When we are young we can train a little more, but often train A LOT more. As we get old, we start to slip a little but experience and wisdom also starts to set in that we start to pay attention to the actual feedback we are being given rather than just charge forward with an indestructible mentality. In other words, yes there is a drop. But that drop may seem bigger than it actually is too because we are learning to pull back a little as well.
And HGP is NARROW GRIP benching that 315 - can you friggin' believe that? I thought he was talking a while back about higher reps and lower weights!??! It's impressive to say the least and your warning should be taken....although, maybe that's light for him? haha.
What exactly was your diet like before this? I would be curious to know how different this is than what you were doing before.
My diet has varied. Obviously did the PSMF for a while, then fell off the wagon and have swapped between periods of trying to eat "moderately", low carb, falling off the wagon some more, etc. Priorities are ever shifting and I'm still trying to find something that fits in without requiring it be a top priority. Most recently I was eating more carbs - mostly through oatmeal, bananas, rice, and similar items - but I've always aimed for around 1 gram per pound.
Actually, to some degree I kind of always gravitate toward protein and lower carbs/fats unless I'm just eating junk food. If I just get a routine going I don't really look for carbs at all - so going to 2 grams in a way wasn't a HUGE shift for me - it was just taking it to more of an extreme.
The irony is I'm not trying to eliminate carbs or fat - I'm still getting 300-500 calories/day from carbs and fat not including any broccoli I eat - but I pretty much self regulate between 1500-2500 calories once I'm focused on getting almost 300 grams of protein. Actually this week every day has been under 2200 and that includes allowing a couple handfuls of M&M's while watching TV. I envision 2500 calories would involve a pretty big cheat because I'm pretty stuffed at around 1700-1900 calories with this setup. The side effect is that, as you would expect, I don't feel like eating an entire family sized bag of M&M's and even a couple handfuls felt like a real splurge.
The real thing that has caught me by surprise is actually some mental/psychological improvements and energy improvements that I didn't expect, to be honest.
My guess is that if I was around 10-15% bodyfat I would need to increase the fat/carb intake a bit or I would be more hungry.