Pulmonary function as a limiting factor of middle-distance race performance.

Area of Science:

• Sports Medicine
• Pulmonary Physiology
• Exercise Science

Background:

• Exercise-induced bronchoconstriction (EIB) is a prevalent yet underdiagnosed condition.
• The etiology of EIB remains largely unknown.
• This study investigates EIB in the context of a demanding skyscraper race.

Purpose of the Study:

• To determine the prevalence of EIB following a skyscraper race.
• To examine the relationship between EIB and race performance.
• To identify potential predisposing factors for EIB in this population.

Main Methods:

• Participants (n=34) underwent spirometry (FEV1) pre- and post-race.
• Allergy and training data were collected via questionnaire.
• Post-exercise blood lactate was measured to assess exertion.

Main Results:

• Over 40% of participants exhibited a significant FEV1 decrement (>10%) post-race.
• EIB prevalence was not associated with atopy, training, demographics, or exertion levels.
• Individuals with less severe EIB (<10% FEV1 decrement) demonstrated faster race times.

Conclusions:

• Nearly half of skyscraper racers develop EIB.
• EIB in this context is independent of training, demographics, and exertion.
• Slower race performance in EIB responders suggests a negative impact on fitness.