Muscle Oxygen Training

Perhaps someone has wondered whether HRVTs based on DFA a1 are still aligned with established standards when tested at altitude. It's no...

Although there have been 2 published studies examining DFA a1 behavior after either long duration low (ultramarathon) and short duration hi...

 Confirmation of this method is seen here Much has been written and discussed regarding the agreement between the first HRV a1 threshold (a ...