Fagevik Olsén M, Hahn I, Nordgren S, Lönroth H, Lundholm K. Randomized controlled trial of prophylactic chest physiotherapy in major abdominal surgery. Br J Surg 1997;84:1535-8.
Fagevik Olsén M, Larsson M. Breathing exercises with PEP - what happens to the breathing pattern during a session? Nordisk Fysioterapi 2005;9:195-200.
Frischkneckt Christensen E, Nedergaard T, Dahl R. Long term treatment of chronic bronchitis with positive expiratory pressure mask and chest physiotherapy. Chest 1990;97(3):645-50.
Ricksten SE, Bengtsson A, Soderberg C, Thorden M, Kvist H. Effects of periodic positive airway pressure by mask on postoperative pulmonary function. Chest 1986;89(6):774-81.
PEP to normalise increased lung volumes
Herala M, Stålenheim G, Boman G. Effects if positive expiratory pressure (PEP), continuous positive airway pressure (CPAP) and hyperventilation in COPD patients with chronic hypercapnea. Upsala J Med Sci 1995;100:223-32.
Inspiration Muscle Training
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Hulzebos EH, Helders PJ, Favié NJ, De Bie RA, Brutel de la Riviere A, Van Meeteren NL. Preoperative intensive inspiratory muscle training to prevent postoperative pulmonary complications in high-risk patients undergoing CABG surgery: a randomized clinical trial. JAMA 2006;296(15):1851-7.
Secretion elimination with PEP and HiPEP
Elkins MR, Jones A, van der Schans C. Positive expiratory pressure physiotherapy for airway clearance in people with cystic fibrosis. Cochrane Database Syst Rev 2006 Apr 19;(2):CD003147.
Oberwaldner B, Evans JC, Zach MS. Forced expirations against a variable resistance: A new chest physiotherapy method in cystic fibrosis. Pediatr Pulmonol 1986;2:358-67.
Lagerkvist A-L, Sten G, Westerberg B, Ericsson-Sagsjö A, Bjure J. Positive expiratory pressure (PEP) treatment in children with multiple severe disabilities. Acta Paediatr 2005;94:538-42.