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Preterm newborns (PNEB) present anatomo-physiological characteristics that predispose them to the development of respiratory complications leading to the need of special care in the Neonatal Intensive Care Units (NICU) for monitoring vital functions and performing specialized procedures. The Thoracoabdominal Rebalancing (TOR) method promotes improvement in pulmonary ventilation and restores the balance of respiratory mechanics by normalizing muscle tone, playing an important role in the recovery of the newborn. The objective of this research was to verify the effects of the Thoracoabdominal Rebalancing Method on the cardiorespiratory parameters of premature newborns under non-invasive ventilation admitted to a Neonatal Intensive Care Unit. This is a cross-sectional, observational and quantitative clinical study, in which the sample consisted of 6 PIs admitted to the Neonatal Intensive Care Unit. Values of Respiratory Rate (RR), Heart Rate (HR) and Oxygen Saturation (SpO2) were checked before, during and after the application of the TOR Method during a single visit to each newborn. The data were distributed in Microsoft Office Excel 2010 spreadsheets, where they were organized according to the established objectives, and later submitted to Friedman's test to measure significant changes between the analyzed values. According to the variables analyzed, it was found that the HR was statistically lower after 10 minutes when compared to during the procedure (p=0.030); the RR was statistically lower 10 minutes later when compared to minutes before the procedure (p=0.003); and Sp02 was statistically higher after 10 minutes when compared to 5 minutes earlier (p=0.023). It is concluded, then, that the TOR Method produced positive effects in relation to the cardiorespiratory parameters (HR, RR and SpO2) of premature newborns under Noninvasive Ventilation and did not cause harmful intercurrences to the hemodynamics of PIs. [ABSTRACT FROM AUTHOR]