L’insulino-resistance et l’inflammation de repos majorent-elles le stress oxydant post-exercice chez des adolescentes libanaises en surcharge pondérale ?

Abstract

Introduction The goal of this study was to check if exercise raises oxidative stress markers in overweight teenagers ( n = 29) compared to non obese ( n = 17) ones. Synthesis Blood markers of insulin resistance, inflammation and oxidative stress were measured at rest and/or after a maximal exercise. At rest, the overweight teenagers exhibited an insulin resistance, an inflammation and an oxidative stress. After exercise, plasmatic myeloperoxidase and lipid hydroperoxides were increased only in overweight teenagers. However, the differences between groups disappeared when the values were reported to V ˙ O 2 pic suggesting that exercise intensity consitutes the major oxidative stress factor. Conclusions The relations between rest insulin resistance, inflammation and post-exercise oxidative stress indicate that those parameters contribute in post-exercise oxidative stress.