A little commentary on my side note… I’ve seen and talked to a couple of other people who have done the AeT and it seems like my results (160 bpm and 7:45 min/mile run) are massively off. I held my breathing through my nose up to that point, but my breaths were definitely shorter and more labored. I’d love your thoughts on this too!
I’ve recently purchased and begun the 24-week mountaineering plan for an upcoming climb of Denali in June. Coming from a powerlifting/HIIT background, I’m acutely interested in the concept of fat adaptation, and have read pretty much all of the articles that you’ve written on it on UA.
In the book, however, there’s a spot that seemingly conflicts with the fasted morning workouts that you recommend online:
(pp 292-93): “A big breakfast with a lot of calories from all three sources is the best way to fuel a big day. If it’s been more than two hours since breakfast, eat a simple-carb pre-workout snack twenty minutes before you begin in order to top up your glycogen stores.”
(pp 290-291): “Eating simple-carbohydrate rich foods such as energy gels, energy bars, or candy bars before or during training or alpine climbing impacts your ability to burn stored fat as a fuel and negatively affects long-duration, low-intensity performance.”
Can you help me deconflict this? The latter seems to be more in line with the concept of fat adaptation. At least in the transitioning phase, all aerobic workouts are done at or below AeT. Is the statement on 292-93 related to later training above AeT, or do you recommend eating a big breakfast on the “Hike on Hilly Terrain” 2-3 hr workout days found in the transition mesocycle?
Side note– I tapped out on the introductory AeT nosebreathing test at 160 bpm and 7:45 min/mile pace. Not trying to blow wind up my you-know-what, but the test really changed my perspective on what *hard* actually was.
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