Signs and Symptoms Clinical Trial
Official title:
Evaluation of the Impact of a Probiotic-based Formula on Digestive Symptoms, General Symptoms and Mood in Ultra Runners
Randomized, prospective, double-blind, placebo-controlled study in ultramarathon runners to evaluate the effects of suplementation with i3.1 probiotic formulation on the relief of common digestive symptoms associated to intense physical exercise. Secondary study outcomes aim to evaluate the effect of the probiotic formulation on fatigue, discomfort and muscle pain, as well as anxiety and mood.
Gastrointestinal symptoms (GIS) are a common feature of intense exercise, especially in ultra-endurance events. The main objective of this study is to evaluate the impact of a 3-strain probiotic formulation comprising Lactiplantibacillus plantarum and Pediococcus acidilactici on digestive symptoms in a maximum of 300 runners registered in an organized ultra-marathon event. A randomized, prospective, double-blind, placebo-controlled study will be conducted. Once recruited, participants will be allocated to recieve either the probiotic or placebo (at a ratio 2:1) for 4 weeks prior to race day. During follow-up, study participants will fulfill several questionnaires at specific time points (baseline, week -3, -2, -1, -24 h previous to the race, as well as 24 h and 7 days after the race). This will be documented through a specifically designed, web-based platform. Digestive symptoms will be evaluated through validated questionnaires: modified from Pfeiffer et al (2012; main outcome) and the Gastrointestinal Symptoms Rating Scale (GSRS). Secondary objectives will comprise anxiety, mood, other symptoms (muscle pain, fatigue, respiratory symptoms), and performance in the ultra-marathon. ;
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