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High training volume is associated with increased prevalence of nonallergic asthma in competitive cross-country skiers

Rikhard Mäki-Heikkilä, Jussi Karjalainen, Jari Parkkari, Heini Huhtala, Maarit Valtonen, Lauri Lehtimäki

Journal of Asthma · 2022

Abstract

Asthma prevalence in the most successful competitive cross-country skiers was 56.1%. Non-allergic asthma was more common in skiers than controls (60.1% vs. 38.7%, p = 0.036). Non-allergic asthma OR 5.05 (95% CI 2.65–9.61), allergic asthma OR 1.92 (1.08–3.42).