Alveolar-Membrane Diffusing Capacity Limits Performance in Boston Marathon Qualifiers

Kaleen M Lavin, Allison M Straub, Kathleen A Uhranowsky, James M Smoliga and Gerald S Zavorsky

PLOS ONE, 2012, vol. 7, issue 9, 1-7

Abstract: Purpose: (1) to examine the relation between pulmonary diffusing capacity and marathon finishing time, and (2), to evaluate the accuracy of pulmonary diffusing capacity for nitric oxide (DLNO) in predicting marathon finishing time relative to that of pulmonary diffusing capacity for carbon monoxide (DLCO). Methods: 28 runners [18 males, age = 37 (SD 9) years, body mass = 70 (13) kg, height = 173 (9) cm, percent body fat = 17 (7) %] completed a test battery consisting of measurement of DLNO and DLCO at rest, and a graded exercise test to determine running economy and aerobic capacity prior to the 2011 Steamtown Marathon (Scranton, PA). One to three weeks later, all runners completed the marathon (range: 2∶22:38 to 4∶48:55). Linear regressions determined the relation between finishing time and a variety of anthropometric characteristics, resting lung function variables, and exercise parameters. Results: In runners meeting Boston Marathon qualification standards, 74% of the variance in marathon finishing time was accounted for by differences in DLNO relative to body surface area (BSA) (SEE = 11.8 min, p

Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:plo:pone00:0044513

DOI: 10.1371/journal.pone.0044513

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