topicProbiotic Athletes Respiratory Health Randomized Trial
claimMoreover, repeated exhaustive exercise and high training loads may lead to a transiently depressed immune function, associated with an increased risk of upper respiratory tract infection (URTI).
evidence level1
citationHeimer M (2022)
sourceHealth Benefits of Probiotics in Sport and Exercise - Non-existent or a Matter of Heterogeneity? A Systematic Review.
topicProbiotic Athletes Respiratory Health Randomized Trial
claimConclusion The effects of probiotics on immune system, URTI, and GI symptoms in athletes, healthy adults and recreationally active individuals remain inconclusive.
evidence level1
citationHeimer M (2022)
sourceHealth Benefits of Probiotics in Sport and Exercise - Non-existent or a Matter of Heterogeneity? A Systematic Review.
topicProbiotic Athletes Respiratory Health Randomized Trial
claimBackground The use of probiotics in sports has been growing in recent years, as up to 50% of athletes suffer from training- and performance-limiting gastrointestinal (GI) problems.
evidence level1
citationHeimer M (2022)
sourceHealth Benefits of Probiotics in Sport and Exercise - Non-existent or a Matter of Heterogeneity? A Systematic Review.
topicProbiotic Athletes Respiratory Health Randomized Trial
claimIn most cases, probiotic supplementation is effective in two major types of exercise: probiotics show strain and duration-specific effects both on endurance-based and intermittent-exercise associated sport.
evidence level4
citationTeglas T (2025)
sourceProbiotic supplementation for optimizing athletic performance: current evidence and future perspectives for microbiome-based strategies.
topicProbiotic Athletes Respiratory Health Randomized Trial
claimThe supplementation can reduce inflammatory process activity and stress-related factors, e.g., anxiety, depression, in intermittent exercise-associated sports.
evidence level4
citationTeglas T (2025)
sourceProbiotic supplementation for optimizing athletic performance: current evidence and future perspectives for microbiome-based strategies.
topicProbiotic Athletes Respiratory Health Randomized Trial
claimIn endurance-based sports, probiotics enhanced lipid metabolites, including short-chain and polyunsaturated fatty acids, modulated the maximal oxygen capacity, and reduced gastrointestinal symptoms.
evidence level4
citationTeglas T (2025)
sourceProbiotic supplementation for optimizing athletic performance: current evidence and future perspectives for microbiome-based strategies.
topicProbiotic Athletes Respiratory Health Randomized Trial
claimThe association between microbiota and physical activity is currently a key focus in sports performance research, and the effects of probiotics administration on athletes represent a relatively new area of research.
evidence level4
citationTeglas T (2025)
sourceProbiotic supplementation for optimizing athletic performance: current evidence and future perspectives for microbiome-based strategies.