Physiological adaptations to 80/20 running

B​log post by Marco Altini

I've been doing some optimizations around my running, which mainly translated into adopting a more polarized approach to training (which is called 80/20 running by some, MAF method by others, common ground being that you train most of the time very slow and get rid of moderate intensity running).

After 6 months and much improvement compared to the previous 5-6 years of running, I wrapped up my progress in the blog post you can find at this link, including much data on physiological adaptations to this training plan, in terms of changes in resting heart rate, resting heart rate variability, sub-maximal heart rate during training & more.

Hope some of you will find it interesting, and it would be great to hear more thoughts around this or if anyone experienced similar changes in terms of both performance and physiological adaptations.
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We have also opened a discussion on this on our Club on Strava, that should be available at this link: https://www.strava.com/clubs/245021/discussion