Thirty-three highly trained individuals were randomly assigned to the probiotic or placebo group using double blind procedures. The groups received either the multispecies probiotic formulation Ecologic® Performance (1x1010 CFU/gram) or placebo once per day for 12 weeks. Immune system markers were determined at baseline and after 12 weeks, both at rest and immediately after exercise. Participants completed a daily diary to identify any infectious symptoms.
Before supplementation, 10 subjects in the placebo group and 12 subjects in the probiotic group experienced one or more URTI symptoms over the prior three months. After 12 weeks of treatment, 11 subjects on placebo and 5 subjects on probiotics experience one or more URTI symptoms during the study period. The proportion of subjects who experienced one or more URTI symptoms during the study period was 2.2-fold higher in the placebo group than in the probiotics group (placebo 0.79, probiotics 0.35; p=0.016).
Taking together, probiotic supplementation on a daily basis enhance resistance to URTI in athletes and offer thus a potential interventions strategy during heavy exercise training periods, especially in the winter months.
Ecologic Performance is a b2b formulation. The information in this article should not be used by consumers to diagnose, cure or prevent any diseases.