What really happens to your neuromuscular system after different types of HIIT — and how do we know?

This episode does something we've been building toward for years: puts real data behind the HIIT Science taxonomy. Using low-frequency fatigue measurements from Myocene technology, Martin Buchheit tested the taxonomy on himself — mapping how different interval types load and recover the neuromuscular system in ways we previously could only infer.

The conversation covers why some sessions crush your legs for 48 hours while others don't, why neuromuscular RPE tracks fatigue better than most coaches expect, and why the distinction between load and response still gets muddled in practice.

The episode closes with a second topic: how change of direction changes everything in HIIT prescription — and why acceleration and deceleration capacity need to drive individualization in team sport training.

In this episode:

Why HIIT has always been about more than metabolic zones
Low-frequency fatigue as an objective window into neuromuscular recovery
Concentric vs. eccentric load — why cycling and running recover so differently
Neuromuscular RPE: cheap, practical, and surprisingly valid
Rethinking COD-based interval prescription for team sport athletes

Martin Buchheit's New Course

For those interested in going deeper, Martin’s updated course on Load and Response Monitoring in Elite Football is now available inside the HIIT Science course library.

It builds on the same ideas discussed here, focusing on how to better connect training load with athlete response using practical frameworks and real world examples

Early access is currently available for a limited time. You can subscribe to the HIIT Science email list to receive details and access to the discount

https://hiit-science.thinkific.com/courses/monitoring-load-and-response?ck_subscriber_id=4050821192&utm_source=convertkit&utm_medium=email&utm_campaign=Its%20finally%20here:%20Martin%20Buchheits%20New%20Course%20%F0%9F%8E%89%20-%2021641648