I’m assuming this is the article you’re referencing [The Ian King Cheat Sheets - Part 2] and this is the passage you have in mind;
According to Ian, if an experienced lifter wants to bring up a certain body part, then he’ll need to prioritize. Beginners can make good progress training every muscle group and/or lift with the same intensity and volume, but as we all know, it gets harder to progress the more years you spend in the gym. The answer for the person of advanced training age is to do specialization work for that group of muscles while doing only “maintenance” work for the rest of his body.
(If this isn’t what you’re referencing, you can ignore the rest of this.)
I agree with this, and it aligns with what I’ve said earlier about advanced lifters slashing their frequency and volume to maintain what they have while focusing on their problem areas.
I don’t think it’s necessary to actually slash your total volume, though, until you’ve very nearly hit your genetic limit. For going from beginner to intermediate, I don’t think decreasing total volume is a good idea, but you don’t have to necessarily increase it, either. You can balance volume and frequency by decreasing the amount of volume you get in on any given session relative to the extent to which you’ve increased frequency.
For example, you lift 100lbs 1 time per gym session 3x/week, for a total weekly volume of 300lbs lifted. If you increase frequency to 6x/week, you can afford to drop your daily volume to 50lbs before your total weekly volume takes a hit.
This is just one example, though. The way I see it, volume must always be considered relative to intensity. For example, if your 1rm is 100lbs, then lifting 75lbs for 2 sets of 5 (option 1) is actually less volume than doing 85lbs for 2 sets of 3 (option 2). This may seem counterintuitive at first, seeing as with option 1 you are doing more total reps and more total weight (10 reps and 750 total lbs vs 6 reps and 255 total lbs), but this is only what I would call nominal-volume (and yes, I just made this term up. There may or may not already be a term for this, I don’t know, just roll with it for now)
This is nominal-volume as opposed to real-volume, which has to do with how many reps you’re getting relative to the total amount of reps you can do with a given weight in any one set. 75% of your 1rm, for most people, is going to be a weight they can manage for 10 reps, so 2 sets of 5 @75% intensity only puts them on-par with their AMRAP volume (which, as the term “AMRAP volume” implies, is the most amount of volume they can manage in a single set). 85% intensity, however, is typically a weight you can only manage for 5 reps, and therefore doing 85% for 2 sets of 3 gives you a net gain of 1 additional rep over your AMRAP volume, which is a 20% increase in real-volume.
Your body doesn’t know how much weight it has moved in total, it only knows how stimulated it has been, which is why it’s important to differentiate between real-volume and nominal-volume, as the former factors in the relative impact a given intensity has on your muscles, whereas the later is just a raw number of total work done.
All this is just a complicated way of explaining that, if recovery is an issue for you, you can deal with that problem by decreasing nominal-volume without decreasing real-volume by means of increasing intensity. Since you’re doing fewer reps and moving less total weight session-to-session, it doesn’t wear down your joints/tendons/ligaments as much, nor is it likely to tear up your muscles as much (keep in mind greater muscle damage doesn’t necessarily imply greater subsequent growth). But so long as you’re still netting the same relative real-volume, you shouldn’t experience any less gains as the result.
In short;
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As you get older/ more advanced, you’ll have to decrease nominal-volume and increase intensity, but you won’t have to, nor should you, decrease real-volume until you’re just about at your genetic limit and ready to be in maintenance/fine tuning mode.
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If you increase frequency, you’ll have to drop nominal-volume per session, however you can actually get away with an increase in total weekly real-volume by increasing intensity sufficiently. In this way you don’t impede your recovery ability, nor do you need to leave potential gains on the table.


