Effects of bovine colostrum supplementation on upper respiratory illness in active males

Type Article
Original languageEnglish
Pages (from-to)194-203
JournalBrain, Behavior, and Immunity
Volume39
Early online date04 Nov 2013
DOI
Publication statusPublished - Jul 2014
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Abstract

Bovine colostrum (COL) has been advocated as a nutritional countermeasure to exercise-induced immune dysfunction and increased risk of upper respiratory illness (URI) in athletic populations, however, the mechanisms remain unclear. During winter months, under double-blind procedures, 53 males (mean training load±SD, 50.5±28.9 MET-hweek(-1)) were randomized to daily supplementation of 20g of COL (N=25) or an isoenergetic/isomacronutrient placebo (PLA) (N=28) for 12weeks. Venous blood was collected at baseline and at 12weeks and unstimulated saliva samples at 4 weeks intervals. There was a significantly lower proportion of URI days and number of URI episodes with COL compared to PLA over the 12weeks (p0.05), which does not support previously suggested mechanisms. In a subset of participants (COL=14, PLA=17), real-time quantitative PCR, targeting the 16S rRNA gene showed there was an increase in salivary bacterial load over the 12 weeks period with PLA (p

Keywords

  • URTI, innate immunity, mucosal immunity, microbiome, 16S rRNA, metabolomics