Results of VC and FEV1 measurements in 283 males aged 18-40 years were the basic for "own standard" calculation. Measured values of VC and FEV1 obtained from males being tested were compared to values resulting from Baldwin, Berglund, Kory, Knudson, Morris, Nikodemowicz, CECA standards and own one. Measured values for VC did not differ from own standard and that of Morris. Measured values for FEV1 did not differ only from own standard, and were greater than all of the compared standards. According to both the standards of the discussed authors and own standard, due values of VC and FEV1 were found for "theoretical males" of 18-40 years and height 150-195 cm. For these "theoretical males" the highest due values of VC were recorded in CECA nomogram, and due values of VC from own standard did not differ from Morris standard. Due FEV1 values from own standard were compatible with due values of CECA. It has been stated that for the assessment of spirometric tests for males aged 18-40 years in Poland, Morris standard should be currently accepted for VC values, and CECA standard for FEV1.
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