AIM: Changes in IL-6, TNF-a, and TNF-a receptors - sTNFRI and sTNFRII - were evaluated in a group of professional cyclists treated with immunomodulator AM3 (Inmunoferón®) for 6 months of training and competition. METHODS: Sixteen male professional cyclists with a similar training program participated in the study which was designed as a randomized, placebo-controlled, double-blind clinical trial. Venous blood samples were collected in basal conditions, before beginning the supplementation program, and after 90 and 180 days of training and competition season. RESULTS: No significant differences in biochemical parameters or in IL-6 were evidenced between placebo and AM3-treated groups throughout the study. Plasma TNF-a levels significantly decreased (P<0.05) after 90 days of training in the AM3 treated group. TNF-a receptors increased during training season in both placebo and AM3 treated groups, although the increase was significantly higher (P<0.05) in the AM3 group with respect to the placebo group. CONCLUSION: The changes produced by regular training and competition were modified throughout the season by AM3 treatment which could reduce the inflammatory response to excessive exercise.
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