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> VO2 max are trackable using hand-held

VO2 max is not trackable via hand-held. VO2 max tracking at this point requires going to the lab, putting on a mask that collects expelled gasses and getting on a treadmill. Neither resting heart rate nor peak heart rate track VO2 max.

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Agree, you wont get exact numbers but ignoring the absolute values one can see differences over time to see whats working. When it comes to these numbers i have learned that you dont focus on absolute values but watch them change

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