Efficacy of pursed lips breathing with forced expiration techniques and active cycle of breathing technique on pulmonary mucus clearance in healthy subjects

Saowanee WoravutrangkulSuwannee JarungjitareeChamka SritaraRoongtiwa VachalathitiBenjamas ChuaychooMahidol University. Faculty of Physical Therapy2018-04-182018-04-182018-042010Journal of Physical Therapy Science. Vol.22, (2010), 247-2540915-5287https://repository.li.mahidol.ac.th/handle/20.500.14594/10550[Purpose] To investigate the efficacy of pursed lips breathing with forced expiration techniques (PLB & FETs) and the active cycle of breathing technique (ACBT) on pulmonary mucus clearance in healthy subjects. [Methods] Three healthy subjects volunteered for the study. Pulmonary mucus clearance was measured over 70 minutes on three different days by a radioaerosol technique. Each subject attended three sessions, one each of control (normal breathinh), PLB & FETs and ACBT. [Results] The efficacy of both airway clearance techniques was similar, but better than that of normal breathing. In the central lung zone, PLB & FETs demonstrated a slight enhancement of mucus clearance as compared with ACBT and normal breathing. In the intermediate and peripheral zones, PLB & FETs and ACBT resulted in a relatively high mucus clearance as compared with normal breathing. Overall mucus clearance of normal lungs was remarkably improved by PLB & FETs and ACBT. [Conclusion] Enhanced mucus clearance in healthy subjects, particularly in the intermediate and peripheral lung zone, can be achieved by PLB & FETs and ACBT.engMahidol UniversityPursed lips breathingActive cycleRadioaerosol tracer techniqueForced expiration techniquesBreathing techniquePulmonary mucus clearanceEfficacy of pursed lips breathing with forced expiration techniques and active cycle of breathing technique on pulmonary mucus clearance in healthy subjectsArticleThe Society of Physical Therapy Science