Skip Navigation LinksHome > October 2009 - Volume 37 - Issue 4 > Exercise and Respiratory Tract Viral Infections
Exercise & Sport Sciences Reviews:
doi: 10.1097/JES.0b013e3181b7b57b
Articles

Exercise and Respiratory Tract Viral Infections

Martin, Stephen A.1,2; Pence, Brandt D.1,2; Woods, Jeffrey A.1,2,3,4

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Abstract

Prolonged intense exercise causes immunosuppression, whereas moderate-intensity exercise improves immune function and potentially reduces risk and severity of respiratory viral infections. Here, based on available evidence, we present a model whereby moderate exercise-induced increases in stress hormones reduce excessive local inflammation and skew the immune response away from a TH1 and toward a TH2 phenotype, thus improving outcomes after respiratory viral infections.

©2009 The American College of Sports Medicine

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