Originally Posted by
no sweat
Good luck (I'd use a spotter!). Yeah... bad HR = bad P O2, so I have an invalid test. But 95% (which I did record with a valid HR) was still a significant drop from the steady 99 - 100 I was showing in Z2.
Man (just based on a quick survey)... what a(n apparently) ripe area for abuse. Glad I'm in this sport for health, well being and fun. Not really too interested in all those risk factors associated with high hemocrit.
Well, either we don't know what we're doing or the folks in the study were a little different:
Well-trained athletes were required to ensure that the intensity of exercise would be of such magnitude to generate EIH.
(EIH: Exercise Induced Hypoxaemia)
Maybe it takes some really incredible legs!
Or those finger oximeters aren't accurate at measuring what we want measured. Mine measured HR accurately most of the time. In the study, they used a forehead sensor rather than finger. Beats me. On my best 3' interval, I was panting hard for 1.5 minutes, with the last minute spent accelerating hard, right at my limit. The ox said 98%, dropping to 97% for a few seconds after the interval. Nowhere near the <91% described in the study. My HR was 6-8 beats over LTHR, maybe 6 beats below absolute max.
Once I figured a way to tie the ox onto my finger, I didn't have any trouble on the rollers. Felt kinda good to play at being the kilo man again.
OTOH, I've always figured that VO2max intervals do their work by stimulating RBC production and 3' intervals are the standard for that. So . . .