Key result
Competitive marathon running linked to a ~9% post-race drop in FVC and increased residual volume.
Why the study?
Does competitive marathon running alter pulmonary function in runners?
Population
13 runners (11 males and 2 females)
Comparison
Competitive marathon running vs Baseline measurements
Design
Cohort
Follow-up
1 day post-race
Authors
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Transient post-marathon FVC reduction with RV increase is reversible within 24 h; leaves open performance or repeated-exposure implications in larger cohorts.
Observational (n=13)
Does competitive marathon running alter pulmonary function in runners?
Effect estimate: 0.48 L (8.6%) reduction
Competitive marathon running causes a transient reduction in forced vital capacity and an increase in residual volume, likely due to small airway closure at increased lung volumes.
Maron et al. (1979) reported an observational. Competitive marathon running vs. Baseline (1-2 weeks prior) was evaluated on Forced vital capacity (FVC) (0.48 L (8.6%) reduction). Competitive marathon running resulted in an average 0.48 L (8.6%) reduction in post-race forced vital capacity accompanied by an equivalent increase in residual volume.
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