Firstly, I'll assume you're not sprinting at the end of the dive because sprinting whether breathing or not => switch to anerobic metabolism = muscle 'burn.'
A couple of things:
- Except in the most extreme cases, no 'burn' at the end of a taxing dive => beware: BO could be around the corner. Exception = increase in Mb stores and anaerobic fitness will delay burn.
- 'burn' = good sign of peripheral vasoconstriction of locomotors even under exercise conditions. Most certainly due to central hypoxia-induced peripheral vasoconstriction, but also apnea/cold-water induced vasoconntriction.
-if you have a poor DR, because of excessively elevated metabolic rate, warm muscles, genetics, training, etc => little to no burn => bad news => risk of BO inversley related to DR, i.e., strong DR => reduced risk of BO.
This means one should opt for strategies that magnify the DR to reduce BO; strategies like minimizing the work rate in the first part of dive, etc.
For sub-max effort dives (i.e., serial dives) a 'burn' is no good.
It all seems complicated but its not. Best way to think of it is like navigating through a mine field: its ok if you know where the mines are! There aren't too many mines.
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