Bronchodilator response in FOT parameters in middle-aged adults from SCAPIS - normal values and relation to asthma and wheezing.

Forced oscillation technique (FOT) is a measure of respiratory impedance described by DuBois over 60 years ago [1]. Respiratory impedance (Zrs) can be calculated by superimposing sound waves on normal tidal breathing without special breathing maneuvers. Footnotes This manuscript has recently been accepted for publication in the European Respiratory Journal . It is published here in its accepted form prior to copyediting and typesetting by our production team. After these production processes are complete and the authors have approved the resulting proofs, the article will move to the latest issue of the ERJ online. Please open or download the PDF to view this article. Conflict of interest: Dr. Johansson has nothing to disclose. Conflict of interest: Dr. Wollmer reports personal fees from Chiesi Pharma, outside the submitted work; In addition, Dr. Wollmer has a patent Device and method for pulmonary function measurement issued. Conflict of interest: Dr. Sundstrom reports ownership in companies providing services to Itrim, Amgen, Janssen, Novo Nordisk, Eli Lilly, Boehringer, Bayer, Pfizer and AstraZeneca, outside the submitted work. Conflict of interest: Dr. Janson has nothing to disclose. Conflict of interest: Dr. Malinovschi has nothing to disclose.