Research
Micronutrients & recovery
Specific probiotic strains improve gut barrier integrity, reducing gut permeability and systemic endotoxemia caused by intense, prolonged exercise.
If you suffer from GI distress during long or intense workouts, consider a probiotic strain known to support gut barrier function. This may help prevent 'leaky gut' and systemic inflammation associated with heavy training.
ModerateSupportsMEDIUM confidence
Specific probiotic strains can improve the integrity of the gut-barrier function in athletes.
Why this rating
Supported by preclinical and some human studies, but strain-specific.
Source
International Society of Sports Nutrition Position Stand: Probiotics
Ralf Jäger et al. · Journal of the International Society of Sports Nutrition · 2019
DOI 10.1186/s12970-019-0329-0
narrative_reviewCited 258×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Specific probiotic strains reduce the frequency, severity, and duration of upper respiratory tract infections (URTI) in athletes, particularly under conditions of high training load or environmental stress.Good
- Athletes have distinct gut microbiota compositions compared to sedentary individuals, characterized by higher diversity and abundance of health-promoting bacteria, influenced by exercise and protein intake.Good
- Probiotic supplementation does not consistently improve athletic performance metrics (e.g., VO2 max, peak power) across all strains and populations.Moderate
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