Gastrointestinal Symptoms Clinical Trial
— WHOMLFOfficial title:
The Effect of Probiotics on the Relationship Between the Gut Microbiota and Gastrointestinal Symptoms During Endurance Exercise'
Verified date | September 2020 |
Source | Hogeschool Leiden, University of Applied Science |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
A double-blind randomized, placebo-controlled study will be performed with experienced endurance athletes to assess the effect of probiotics supplementation on the occurrence and intensity of the gastrointestinal symptoms, on performance and on the composition and function of the gut microbiota. The duration of the supplementation period, with Ecologic® PERFORMANCE supplements, is fourteen weeks. Standardized maximum exercise tests on a treadmill are performed before and after the supplementation period, as well as two performance tests (before) and one performance test (after). During the performance tests, the load is first submaximal for 1 hour, after which a time trial of 30 minutes will be performed. The measurements before and after the supplementation period are performed on individual days with at least 48 hours of relative rest in between. During the supplementation period, training diaries, a Profile of Mood States (POMS) questionnaire and a few questionnaires about dietary habits will be completed.
Status | Completed |
Enrollment | 42 |
Est. completion date | May 2, 2020 |
Est. primary completion date | May 2, 2020 |
Accepts healthy volunteers | Accepts Healthy Volunteers |
Gender | Male |
Age group | 18 Years to 45 Years |
Eligibility |
Inclusion Criteria: - Dutch nationality; maximal oxygen uptake (V ?O_2max) = 45 mL?kg-1?min-1 (based on an incremental exercise test you are considered trained); - an average training frequency of at least three times per week; - a low risk profile based on a health-history form (the form is attached to the participant information letter); - occurrence of exercise-induced gastrointestinal symptoms. Exclusion Criteria: - smoking; - a diagnosis of gastrointestinal disorders (e.g. Crohn's disease, celiac disease, diagnosed with irritable bowel syndrome); - use of antidepressants in the 6 months prior to the start of the study; - use of antibiotics, antivirals, antifungals, antiparasitic agents, prebiotics/probiotics supplements (foods are allowed) in the 6 months prior to the start of the study. |
Country | Name | City | State |
---|---|---|---|
Netherlands | Vrije Universiteit Amsterdam | Amsterdam |
Lead Sponsor | Collaborator |
---|---|
Karlijn te Poele | MyMicroZoo, Universiteit Leiden, VU University of Amsterdam, Wageningen University and Research, Winclove Bio Industries BV |
Netherlands,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Other | Temperature | Body temperature in degrees celcius during endurance exercise, calculated by core temperature and skin temperature | Before and after 14 weeks of supplementation | |
Other | Training diary | Training load (in arbitrary units) calculated by modality, training volume (in km), training intensity (average HR) and a subjective measure of training intensity perception (RPE-scale 1=very, very light -10=maximum) | During the 14 weeks supplementation period | |
Other | Profile of Mood States Questionnaire | Summed outcome score of the weekly completed Profile Of Mood States questionnaire (with 32 questions with scale 0-4; 0=not at all - 4=extremely). | During the 14 weeks supplementation period | |
Primary | Performance maximal running | Distance in km on a 30 minute running time trial, preceded by two times 30 minutes submaximal exercise. | Before and after 14 weeks of supplementation | |
Primary | Performance maximal running maximal incremental exercise test | Maximum speed on a maximal rincremental exercise test | Before and after 14 weeks of supplementation | |
Primary | Gastrointestinal symptoms | Severity (scale 1-10) of gastrointestinal symptoms during and directly after a running performance test. (1 = none and 10 = worst symptoms ever) | Before and after 14 weeks of supplementation | |
Secondary | The influence of probiotics on the composition of the gut microbiota in trained endurance athletes that experience gastrointestinal symptoms. | Differences in changes in composition of the gut microbiota in the stool sample. | Before and after 14 weeks of supplementation | |
Secondary | The influence of probiotics on the composition of the gut metabolites in trained endurance athletes that experience gastrointestinal symptoms. | Differences in changes in the gut metabolites in the stool sample | Before and after 14 weeks of supplementation |
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