6MWT	Six-Minute Walk Test
ACT	Asthma Control Test
ANOVA	Analysis of variance
AQLQ	Asthma Quality of Life Questionnaire
ATS	American Thoracic Society
AX	Area of reactance
BD	Bronchodilation
COPD	Chronic obstructive pulmonary disease
ERS	European Respiratory Society
FeNO	Fraction of exhaled nitric oxide
FEF25–75%	Forced expiratory flow at 25–75%
FEV1	Forced expiratory volume in the first second
FOT	Forced oscillometry technique
Fres	Frequency of resonance
FVC	Forced vital capacity
GINA	Global Initiative for Asthma
HRCT	High-resolution computerized tomography
ICS	Inhaled corticosteroids
IgE	Immunoglobulin E
IL4α	Interleukin 4 receptor alpha
IL5	Interleukin 5
IL5Rα	Interleukin 5 receptor alpha
IOS	Impulse oscillometry technique
LABA	Long-acting beta ggonists
mMRC	Modified Medical Research Council Dyspnea Scale
MBNW	Multiple breath nitrogen washout
MRI	Magnetic resonance imaging
PET	Positron emission tomography
RV	Residual volume
SBNW	Single breath nitrogen washout
SAD	Small airway dysfunction
SF-12	12-Item Short Form Health Survey
SNOT22	Sino-Nasal Outcome Test-22
SPECT	Single-photon emission computed tomography
SVC	Slow vital capacity
TSLP	Thymic stromal lymphopoietin
TLC	Total lung capacity
X5	Reactance at 5 hertz
ΔX5in-esp	Difference in X5 between inspiration and expiration
R5–R19/20	Resistance at 5–19/20 hertz