Trial reportEuropean journal of applied physiology2014
Effects of probiotics supplementation on gastrointestinal permeability, inflammation and exercise performance in the heat.
Trial report in European journal of applied physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04530929 (Analysis of the Impact of Used Probiotic Strains and Diet on Body Composition, Cardiopulmonary Efficiency and the Incidence of Gastrointestinal Disorders in Runners), which is not on this map. Cited by 119 papers, 20 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Analysis of the Impact of Used Probiotic Strains and Diet on Body Composition, Cardiopulmonary Efficiency and the Incidence of Gastrointestinal Disorders in Runners
Who cites it
119 citing papers in PubMed, 20 syntheses or guidelines pooled it, 14 citations in OpenAlex.
- Carbohydrate supplementation for endurance exercise in the heat: a systematic review with practical recommendations.Journal of the International Society of Sports Nutrition · 2026Pooled it
- A systematic and critical review of measurement scales for evaluating gastrointestinal symptoms during exercise.Journal of the International Society of Sports Nutrition · 2026Pooled it
- Effect of probiotic intake on athletic ability in healthy people: a systematic review and Bayesian meta-analysis.Frontiers in nutrition · 2026Pooled it
- The Effect of Probiotic Supplementation on Cytokine Modulation in Athletes After a Bout of Exercise: A Systematic Review and Meta-Analysis.Sports medicine - open · 2025Pooled it
- The Influence of Dietary Supplements on Exercise-Induced Gut Damage and Gastrointestinal Symptoms: A Systematic Review and Meta-Analysis.Nutrients · 2025Pooled it
- "Do probiotics mitigate GI-induced inflammation and perceived fatigue in athletes? A systematic review".Journal of the International Society of Sports Nutrition · 2024Pooled it
- A systematic review and meta-analysis of clinical trials on the effects of glutamine supplementation on gut permeability in adults.Amino acids · 2024Pooled it
- It's Dead! Can Postbiotics Really Help Performance and Recovery? A Systematic Review.Nutrients · 2024Pooled it
- Effects of Probiotic Supplementation on Sports Performance and Performance-Related Features in Athletes: A Systematic Review.International journal of environmental research and public health · 2023Pooled it
- Probiotics fortify intestinal barrier function: a systematic review and meta-analysis of randomized trials.Frontiers in immunology · 2023Pooled it
- Effects of Probiotic Supplementation on Immune and Inflammatory Markers in Athletes: A Meta-Analysis of Randomized Clinical Trials.Medicina (Kaunas, Lithuania) · 2022Pooled it
- Effects of Probiotics Supplementation on Gastrointestinal Symptoms in Athletes: A Systematic Review of Randomized Controlled Trials.Nutrients · 2022Pooled it
- Pooled it
- Health Benefits of Probiotics in Sport and Exercise - Non-existent or a Matter of Heterogeneity? A Systematic Review.Frontiers in nutrition · 2022Pooled it
- A systematic review: Role of dietary supplements on markers of exercise-associated gut damage and permeability.PloS one · 2022Pooled it
- Effect of prebiotics, probiotics, and synbiotics on gastrointestinal outcomes in healthy adults and active adults at rest and in response to exercise-A systematic literature review.Frontiers in nutrition · 2022Pooled it
- Impact of Probiotics on the Performance of Endurance Athletes: A Systematic Review.International journal of environmental research and public health · 2021Pooled it
- The Effects of Exercise on Indirect Markers of Gut Damage and Permeability: A Systematic Review and Meta-analysis.Sports medicine (Auckland, N.Z.) · 2021Pooled it
- Search and Selection of Probiotics That Improve Mucositis Symptoms in Oncologic Patients. A Systematic Review.Nutrients · 2019Pooled it
- Association Between Exercise-Induced Hyperthermia and Intestinal Permeability: A Systematic Review.Sports medicine (Auckland, N.Z.) · 2017Pooled it
59 more citing papers are in PubMed but not listed here.
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors at 5 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeThis study aimed to investigate the effects of multi-strain probiotics supplementation on gastrointestinal permeability, systemic markers of inflammation and running performance when exercising in the heat.
methodsTen male runners were randomized to 4 weeks of daily supplementation with a probiotics capsule (45 billion CFU of Lactobacillus, Bifidobacterium and Streptococcus strains) or placebo, separated by a washout period (double-blind, cross-over trial). After each treatment, the runners exercised to fatigue at 80% of their ventilatory threshold at 35 °C and 40% humidity. To assess gastrointestinal permeability, runners ingested lactulose and rhamnose before exercise and post-exercise urine was collected to measure sugar concentrations. Venous blood samples were collected before, immediately after and 1 h after exercise, and core temperature was monitored during exercise.
resultsProbiotics supplementation significantly increased run time to fatigue (min:s 37:44 ± 2:42 versus 33:00 ± 2:27; P = 0.03, d = 0.54). Average core temperature during exercise was similar between trials (probiotic 38.1 ± 0.2 °C, placebo 38.1 ± 0.1 °C; P = 0.77, d = 0.13). Serum lipopolysaccharide concentration increased post-exercise (P < 0.001), while there was a moderate to large reduction in pre-exercise (d = 0.70) and post-exercise (d = 1.24) concentration following probiotics supplementation. Plasma concentrations of IL-6, IL-10 and IL-1ra increased after exercise (P < 0.01), but there was no significant difference between trials (P > 0.05). There was a small to moderate reduction (d = 0.35) in urine lactulose:rhamnose and a small reduction (d = 0.25) in symptoms of gastrointestinal discomfort following probiotics supplementation (both P = 0.25).
conclusionFour weeks of supplementation with a multi-strain probiotic increased running time to fatigue in the heat. Further studies are required to elucidate the exact mechanisms for this performance benefit.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.