Reference values and modelling of lung function development as a transcendent function of age, body height and mass.
We present new lung function reference values based on an investigation of 1024 healthy subjects aged 6-81 years. The dependent variables, i.e. VC, FEV1, RV, FRC, TLC, PEF, MEF50 and MEF25 are expressed as transcendent functions of age, body height and mass. A single equation covers the age range from 6 to 81 years and reflects certain phenomena such as growth, maturation, ageing, sex differences and the undermass-overmass effect. This allows a more accurate determination of individualized reference values and normal limits.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000375:Aging / Q000502:physiology*; D001824:Body Constitution; D001827:Body Height; D001835:Body Weight; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D012016:Reference Values; D012119:Respiration; D012129:Respiratory Function Tests; D012727:Sex Characteristics