The problem with those zone 2 twitter influencers is they just all say the same thing over and over and have a big love in. Much better to just go out and have a cry when you get dropped and then do it all over again. Over years.
People new to aerobic sports can’t just follow Peter Atia or Alan Couzens or those other zone 2 people, buy a garmin and do a few zone 1 rides and think your going to let it rip. Need to really have a go and do your best to hold shit the bed pace and then do a lot of steady work on top of that
I may just be talking to myself, but one of the things they recommend is buying a lactate testing kit so you can set your own zones and make sure you don’t train above 1 or 2 mml of lactate.
I do think you’ve set up a nice strawman here. I’ve never heard of the lactate-testing-to-stay-in-zone-2 people. I’ve heard of Attia and Couzens but I’m talking a whole wide world of coaches and scientists and not the keto shill Attia (Couzens I have a lot more respect for but I didn’t find following him interesting).
Running 80/20 on 50km a week is going to be 40km easy, 10km hard. Which in my opinion is going to do nothing. So yeah I don’t think 80/20 works for age groupers. At least not those on average volume.
I feel, with 80/20, something has got lost in translation. Someone correct me if I’m wrong, but 80/20 is applicable only to high volume, that’s the key. Run/ride easy, but run/ride lots. Whereas AGers are adopting it and applying it to low-moderate volume programs and it just doesn’t work.
Let’s say the 50 km a week is 5 hours. (Make it 6 if you like). An hour at intensity is, for example, 10x2’ at VO2max in one workout and 4x10’ at threshold in another, plus easy recoveries, plus warm-up and cooldown and zone 1/2 runs (with strides - they don’t count as intensity). You think that’s too easy for the average amateur to make progress on? Most coaches would say it’s way too much running intensity for a triathlon program.
The reason why 80/20 works is not because elites do it (strawman! and elites do more like 90/10). It’s because if you run 5 hours a week, you’re not ready to do more than an hour of intensity - even accounting for the extra aerobic base that cycling and swimming give you that partly carries over to running. You need the mitochondria from low intensity work to recover from your moderate and high intensity work and to adapt.