Fish Oils and Soybean Lecithin Supplementation Modulate Immune Function in Runners

Immune Dysfunction Clinical Trial

Official title: High-EPA and High-DHA Fish Oils and Soybean Lecithin Modulate Inflammation and Neutrophil Properties in Runners Before and After a Half-marathon

Status Completed

Clinical Trial Summary

The purpose of this study was evaluate the comparative effects of FO rich in EPA (FO-EPA) and FO rich in DHA (FO-DHA) on inflammation and neutrophil properties after a prolonged and strenuous exercise. The effect of soybean lecithin on the same parameters and conditions also was evaluated.

Clinical Trial Description

The volunteers were not taking any medication during the study. All individuals signed an informed consent form to the study protocol. Both experimental procedure and informed consent form of this study were in accordance with Guide for the Care and Use of Humans.

All volunteers performed two half-marathons. In the first half-marathon, all participants were not supplemented. Dietary supplementation was initiated immediately after the first race. The volunteers were randomly separated into 3 groups: Soybean lecithin group; Fish oil-DHA group and Fish oil-EPA group. The volunteers ingested 3 g daily of SL or FO-DHA containing 1.5 g DHA and 0.3 g EPA or FO-EPA containing 1.6 g EPA and 0.3 g DHA (EPA:DHA = 5.4:1) during 60 days.

Experimental design:

First race - not supplemented, blood samples were collected before (Phase I) and immediately after race (Phase II).

Second race - dietary supplemented, blood samples were collected before (Phase III) and immediately after the race (Phase IV).

Results were analyzed by two-way analysis of variance (two-way ANOVA) and Tukey post-hoc test. The statistical analysis of the half-marathon effect was performed using nonparametric t tests. Results were considered statistically significant for P<0.05. ;

Related Conditions & MeSH terms

• Immune Dysfunction
• Immune System Diseases

• NCT number: NCT03364699
• Study type: Interventional
• Source: University of Sao Paulo
• Status: Completed
• Phase: N/A
• Start date: March 2013
• Completion date: March 2015