Originally Posted by
PeteHski
This quote in another thread caught my eye in relation to this and could be of interest.
Me too but I think I kept my mouth shut.
Sometimes when really fit, my heart skips beats (PVC) and it makes it appear my resting HR is low when taking it at the wrist feeling the pulse. If the poster was referring to HR during sleep, 39 bpm might is in the ballpark but resting in a chair? That is low for an older
OTOH, the stroke volume is maximized when doing huge volume at Z2 like backpackers in the mountain. So, the limit of performance isn't the cardiac output. My HR is also relatively low at threshold and my power is pretty high with a low HR. My legs just can't use the capacity.
RHR in the 30's is usually younger endurance athletes but who knows.
Many decades ago, I was with a company designing a cardiac stent and the fatigue limits of the stent were related to the average number of heart beats that we all get in out lifetime. So, a lower RHR might well be good mortality-wise.