Current Concepts in Sports Nutrition - Australian Sports Commission

IMMUNE FUNCTION
Kate Bates - National, Oceania, Commonwealth, Cycling Champion.
Nutrition strategies to boost immune function in athletes
Athletes undertaking regular strenuous exercise walk a knife-edge between extreme
physical wellbeing and impaired immune function. Research indicates that athletes are
at increased risk of upper respiratory tract infection during periods of heavy training
and 1–2 weeks following competitive events. This increased risk is most likely due to
the immunosuppressive actions of stress hormones such as adrenaline and cortisol.
Many athletes turn to supplements to boost their immune system. However, research
indicates that immune suppression is multifactorial and no one supplement will
address the problem. The athlete should try a range of useful strategies:
• Manage training loads and daily physical activity associated with work and other
routine activities.
• Manage psychological stress including stress associated with work, family, training
and competition.
• Incorporate sufficient rest.
• Minimise exposure to germs and bugs by practicing good hygiene.
• Ensure adequate (quality) sleep.