Summary....
1. use MMSS/CP to normalize intensity NOT maximal aerobic power which is protocol dependent (hence arbitrary) and ignores the variance of MMSS/VO2max between individuals
2. adopt work-balance modeling to better explain the performance and physiology of HIIT
Enjoy!!
Since one cannot recover at "negative" altitude (unless hyperoxia is used) there is a basement limit which = passive recovery. Thus by lowering the absolute value of MMSS in hypoxia (or elite vs recreational) this decreases Dcp = aerobic "excess" available for physiological recovery (PCr etc)
5/n
Secondly, in our 2016 Wbal study we found longer TTe in the normoxic condition vs hypoxia. From a modeling perspective this is explained by lower Dcp in hypoxia ie: speed of recovery is proportional to the magnitude of excess aerobic ATP supply.
pubmed.ncbi.nlm.nih.gov/26460632/
4/n
Note also that for intermittent exercise, longer TTE = more intervals completed = greater O2def accumulated. The same result can be elicited in lesser trained individuals by altering some combination of work/rec intensities + work/rec durations. Again, easily predicted by Wbal modeling
3/n
Intensity was "normalized" to MAP. However it is common for MMSS of elite endurance athletes to be >%VO2max than recreational. Thus, it is likely the elite group work intensity was a lower % above MMSS and thus, as pred by Wbal modeling, TTE would be longer.
#NormalizetoMMSS
2/n
A reappraisal of HIIT from the IJSPP #1 dl'd paper (2023) using the work-balance model and better (correct?) anchor to normalize intensity...
Conclusion: Competitive XC skiers have longer TTE and accumulate more Odef2 than recreational XC skiers
t.ly/e95Wl
1/n
During pre-acclimation I noticed a change in perceptual response from <3500m to >4000m. I could feel an increase in cerebral BF as a "throbbing" sensation. This coincides with results from our 2017 study in which W' decreased around this (simulated) altitude.
pubmed.ncbi.nlm.nih.gov/28386237/
1st bsky post!
Pre-acclimation in the lab (1hr/d x 12d @ 3200->5400m) to Renjo la pass, Cho la pass, Gokyo Ri, Kala Pattar and Everest base camp (all ~5400m).
Pre-acclimation definitely works! Had little or no AMS despite a relatively fast ascent profile.
