Depressed oral respiratory mucosal immunity and increased incidence of upper respiratory symptoms are commonly reported after bouts of prolonged exercise. The current study observed the impact of a 24-h continuous overnight ultra-marathon competition (distance range: 122–208 km; ambient temperature range: 0–20°C) on salivary antimicrobial protein responses and incidence of upper respiratory symptoms. Body mass, unstimulated saliva and venous blood samples were taken from ultra-endurance runners (n=25) and controls (n=17), before and immediately after competition. Upper respiratory symptoms were assessed during and until 4-weeks after event completion. Samples were analyzed for salivary IgA, lysozyme, α-amylase and cortisol in addition to plasma osmolality. Decreased saliva flow rate (p
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- immunoglobulin A
- upper respiratory
Gill, S. K., Teixeira, A. M., Rosado, F., Hankey, J., Wright, A., Marczak, S., ... Costa, R. J. S. (2014). The Impact of a 24-h Ultra-Marathon on Salivary Antimicrobial Protein Responses. International Journal of Sports Medicine, 35(11), 966-971. https://doi.org/10.1055/s-0033-1358479