title: Development of valid pulmonary function equations for trained athletes.
abstract: The validity of commonly recommended pulmonary function prediction equations (Bulletin Européen de Physiopathologie Respiratoire, Clinical Respiratory Physiology) was tested with two samples (n1 = 156; n2 = 218) of well-trained athletes. Pulmonary function measures (FVC, TLC, RV, FEF25%-75%, FEV1.0, PEF, RV/TCL ratio, FEV1.0/FVC ratio) were typically very reliable but inaccurately predicted with recommended equations based upon anthropometric characteristics. Newly developed "unisex" regression equations were developed with "dummy" coding of gender (i.e., 0 = female; 1 = male), age, height, weight, and various interactions. The new equations were validated with a subsample of group one, cross-validated with the remaining portion of group one, and then cross-validated again with the 218 subjects from sample two. The newly created pulmonary function prediction equations are more valid for well-trained athletes than the equations in use for the general population.
authors.affiliation: Department of HPER, University of Houston, TX 77004.
authors.forename: J R
authors.initials: JR
authors.lastname: Morrow
authors.forename: P J
authors.initials: PJ
authors.lastname: Van Handel
authors.forename: P W
authors.initials: PW
authors.lastname: Bradley
mesh_terms: D000328:Adult; D000367:Age Factors; D001823:Body Composition; D005260:Female; D006801:Humans; D008297:Male; D010809:Physical Fitness; D011237:Predictive Value of Tests; D012016:Reference Values; D012044:Regression Analysis; D015203:Reproducibility of Results; D012129:Respiratory Function Tests; D013177:Sports