Key Takeaway
10 weeks of bovine colostrum supplementation improved immune function and reduced upper respiratory symptoms in cyclists during intense training.
Summary
This double-blind, placebo-controlled study examined the effects of bovine colostrum supplementation on immune parameters and illness in elite cyclists.
Athletes supplementing with colostrum showed better maintenance of immune function during heavy training and fewer days of upper respiratory illness compared to placebo.
Methods
- Double-blind RCT
- 29 competitive cyclists
- 10 weeks supplementation
- 10g/day bovine colostrum vs whey protein
Key Results
- Maintained salivary IgA levels during training
- 44% fewer upper respiratory symptoms
- No effect on performance measures
- Good tolerability
Limitations
- Relatively small sample
- No direct pathogen testing
- Self-reported illness symptoms