The study population included 4 groups of infants; preterm infants born < 300 weeks' gestation with BPD (i.e. oxygen dependence for at least 28 postnatal days 5), preterm infants born < 300 weeks' gestation without BPD, late preterm infants (born at 340-366 weeks' gestation) and term controls.~Pulmonary function testing and spirometry were measured Participants performed CPET on an electronically braked cycle ergometer. During the exercise testing, serial saturation, heart rate and blood pressure measurements were obtained.~The peak oxygen consumption (VO2max) was measured and served as the primary endpoint of the study.
Prospective study comparing hemodynamic and respiratory changes and exercise capacity during Cardio-Pulmonary-Exercise-Testing (CPET) in 4 groups of infants; Three different groups of premature infants and term controls