Been following this thread. I did something simple - I started with Jakob's 'old' training :
Easy 10k twice daily
Subthreshold 5 x 2k (same as 6 mins for Jakob) twice daily
Easy 10k twice daily
Sub threshold 10 x 1k twice daily
Easy 10k twice daily
Sub threshold 25 x 400m twice daily
And for hobbyjoggers we agreed on one session a day. I have been running 50 years now so I just basically chopped everything in half - instead of 2k/1k/400m I do 1k/500m/200m. I used the tinman calculator to choose the slowest thresh times for my current fitness and I dont think for someone like me the easy days have to be running days - so I just walk.
I also have a unique situation that there is no flat ground near my house - I live in a bowl and everywhere is up to start. And finally most of the year like now with the snow - there is only ONE road I can train on So I just came up with the same 10k workout for EVERY SubThresh day :
10 x 200m 5 pct grade up
12 x 500m 2 pct grade up and down
2x1k 5 pct grade back down
60 secs of rest between each run
Doing the short little hops (200m) on the way up in the beginning and saving the long runs (1k) for the way back down works great. I also dont do long runs since my main focus is 800m and injury prevention. And since EVERY day is a hill day I dont need to do any xtra sessions of those either.
For the uphills I add a few seconds to the tinman times and for the downhills I subtract a few seconds - usually about 5 seconds per 200m seems to work good for the grades I am on. And finally I am retired and try to exercise outdoors every day so a 6 day schedule works a lot better for me. I used to take days off but I found that they just made me feel worse so I go every day now unless I get hurt or is some kind of emergency.
So its basically :
Day 1 : Walk an hour or so (about 7k)
Day 2 : Thresh session : 600m warmup / 10x200m / 12x500m / 2x1k / 600m cooldown
wash rinse repeat every 2 days
To ease into this I am starting with 4x500m (instead of 12x500m) for a total of 6k a session and plan on adding a couple of 500m runs each month until I hit the same 10k total as the Ingebrigtsens about 4 or 5 months from now - at the same time dropping my thresh times as my fitness levels improve.
Its working quite well. The biggest problem I have is forcing myself to run that slow - taking a while to get myself to SLOW DOWN. And second thing that has really shocked and pleased me is how much easier this feels than running this entire road in one stretch with no breaks - which is pretty much what my 'training' has been for years now. Running SubThresh with the 60 seconds rests basically takes almost all the pain out of running. Those 60 sec rests are like respawning in a video game to me and I feel really good at night after any of those thresh sessions are done.
And yes its boring but I dont mind that - I think all the Ingebrigtsen training is going to be boring no matter what u do - and in any case every day here is different - on that road last summer I ran into 2 bears and a cougar in just 6 weeks. So that keeps me awake LOL
I turn 65 a year from now and my goal is to be in the top 10 USA for 800m. I havent done a race in decades but I did an 800m time trial with my 17 year old son on the track and that time put me at 50th for age group 60-64 so I think this new training could get me there if I can stick it out for the next year or so.