This is a really interesting question, would also be keen to hear people’s thoughts. I have the same thing for sure- ventilation rate compared to heart rate is quite different when approaching climbs with a big pack and running on flat, for example (ie breathing harder at lower heart rates).
I have been doing weighted hill climbs for the past several weeks and they wreck me, haha. I am just curious about the physiology during these workouts. So as described in TFTNA, I do these workouts in zone 1 by heart rate but they feel much harder both in my legs and with my breathing. I develop a disconnect where I am at the top the very top of my conversational pace or sometimes speaking in “short sentences” but my HR is only around 120. Usually when I’m at the top of my conversational pace my HR is 135-140. I just don’t really understand metabolically what is happening here. One would think that as I generate more ATP my heart rate and respiratory would raise in a similar fashion to accommodate. It should not matter if this is a regular hill climb, run or weighted hill climb…right? Just curious. I’ll keep doing them for the next 7 weeks then into the next phase.
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