I’d agree with others that “it depends”. You can probably make good improvements with either.
I do question if macrocycle periodization is even necessary for the average ag’er. It’s a concept that made sense for pro cyclists that have a long race season (50+ days racing). But now you have the likes of MVdP that are racing rather than traditional off-season and base building. Similarly Bu made comments along the lines of the Norwegians not really having an off season and never being more than 6-12 weeks out of competition fitness.
For the average ag’er doing a handful of races a year, a small off-season after a-race and then pretty constant build with generalised focus on a bit of everything may be more optimal.
There is certainly research showing at the 4-6 week length cycles it seems to make little difference if intensity or endurance comes first. How relevant that is to longer 3 month cycles we may expect to see in triathlon is ofcourse questionable.
To try to answer your question I’d always go with traditional base/endurance first. Some of that thinking is just following tradition - it’s certainly built some excellent cyclists, so no reason to think it doesn’t work. Also there is the thought that long endurance rides will increase mitochondria, which improves lactate clearance, therefore improving interval performance. Whereas I don’t see such a clear link from raising vo2max to improving endurance performance - in fact we see athletes that sacrifice LSD training with lots of HIIT have pretty awful aerobic performance i.e. very poor LT1 threshold (coined aerobic deficiency syndrome by the authors of uphill athlete).
Again to the “it depends” thing. The Norwegians said their vo2 max got lower when moving to ironman distance. So if ironman is your goal any vo2 max improvements you make early season might just be lost anyway - which makes the training seem rather useless. Of course going back to “it depends” if your an aerobic monster with relatively awful vo2max YMMV.
I think Bu actually said most long distance athletes don’t ever need to work on vo2 max as it’s almost certainly not their limiting factor.
I think the best argument for high intensity first is that long rides in winter suck, and short intense rides are preferable to most of us non pros without the luxury of warm weather training camps. If it’s the difference between compliance with a program and skipping sessions that might be enough.
Definitely an interesting topic. Unfortunately I don’t think we will ever have a hard answer.
Bu is one of the reasons I made this topic because I was a bit surprised he basically was suggesting no/little VO2 work (Lionel’s experience with Mikal would also agree with this). In the past few years it seems more people switching away from that style of training and more of the year-round intensity.
My counter argument to his thoughts would be that the Norwegians have most likely doing high end work for 10+ years in prep for short course triathlons so of course it makes sense they don’t work on it during long course training. They most likely also have high VO2 naturally. So it could almost be an argument that HIIT work leads to better gains when transitioning to specificity/volume for long course. Of course Lionel would maybe debunk that, but hard to say if he was fully bought in/followed the plan.
I think there are a few things to consider:
- Yes the Norwegians likely have much greater vo2max than regular ag’ers so certainly a confounding variable.
- You can get decent bump in vo2 max with a targeted 4-6 week block. On the other hand it’s really hard to maintain, especially while trying to do a high volume plan. In that regard base first then a “peaking” block before the race seems to make sense.
- Anaerobic threshold is a better predictor of long distance performance than vo2max. So unless your threshold is 80%+ of vo2max (unlikely for most amateurs) you probably have the ceiling already. Also threshold work is much easier to fit into a high volume program and generally less fatiguing than pure vo2max work. So it would make sense to focus on threshold (which supports the finding that many endurance athletes have pyramidal intensity distribution).