AeT	Aerobic threshold
AnT	Anerobic threshold
$V{T}_1$	Fist ventilatory threshold
$V{T}_2$	Second ventilatory threshold
$S{O}_2$	Oxygen saturation
$V{O}_{2,max}$	Maximal oxygen uptake
HR	Hear rate
BMI	Body mass index
EIAH	Exercise-induced arterial hypoxemia
AHVR	acute hypoxia ventilatory response
$T_{AeT}$	Time to reach the aerobic threshold
$T_{AnT}$	Time to reach the anaerobic threshold
$T_{Des}$	Desaturation time
$T_{Total}$	Total test time
$T_1$	Time to observe the first saturation drop value before AeT
$T_2$	Time to reach the AeT from the first saturation drop value
$T_3$	Time to observe the second saturation drop value after the AeT
$T_4$	Time from the second saturation drop saturation observed to reach the AnT
$R^2$	Coefficient of determination
PPG	Photoplethysmography
$P{O}_2$	Partial pressure of oxygen
A-$aD{O}_2$	Alveolar-arterial $O_2$ difference