Two recent reviews showed the beneficial effects of lactobacilli and bifidobacteria in the reduction of upper respiratory and gastrointestinal symptoms in endurance athletes. These benefits may play a role in performance and exercise recovery. The effects are dependent on the probiotic strain, dose, supplementation period and form of administration (capsules, sachets, functional foods).

Link: View the Study 1
Link: View the Study 2

1. Leite GSF et al. Probiotics and sports: is it a new magic bullet? Nutrition 2019; 60: 152-160
2. Vitale K and Getzin A. Nutrition and Supplement Update for the Endurance Athlete: Review and Recommendations. Nutrients 2019; 11(6), 1289

Our latest intervention study with marathon runners showed that four weeks of supplementation with Lab4 probiotics reduced the incidence and severity of gastrointestinal symptoms prior to and during a marathon race. The runners supplemented with Lab4 probiotics maintained their running speed during the latter stages of the race.
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Link: View the Study

Pugh JN et al. Four weeks of probiotic supplementation reduces GI symptoms during a marathon race. European Journal of Applied Physiology 2019; 119 (7): 1491-1501

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