Effect of exercise on levels of cyclo-oxygenase mediators in exhaled breath condensate in elite athletes.

Aim: Physical exercise requires adaptation from the airways, which includes bronchodilation. Prostaglandins are involved in airway regulation and their plasma level changes during exercise. The purpose of this study was to investigate the effect of symptom-limited exercise on the levels of prostaglandin E(2) (PGE2) and thromboxane B2 (TXB2) in the airways of elite sportsmen.

Relation between bronchial and cardiac vagal tone in healthy humans.

A generally increased vagal nervous activity was suggested to exist in bronchial asthma; however, this contention has never been fully tested. Before studying vagal activity in asthma, we raised the question if there existed any relation between vagal outflows to different target organs in the physiologic state. The specific aim of this study was to determine the relation between the resting level of bronchial and cardiac vagal activity in healthy volunteers.