Document Type : Research Paper I Open Access I Released under CC BY 4.0 license


1 MSc of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Mazandaran, Iran

2 Professor, Department of Exercise Physiology, Faculty of Physical Education and Sport Sciences, University of Mazandaran, Iran


The aim of the present study was to determine the effect of creatine supplementation along with two types of recovery (in-and-out of water) on C-reactive protein (CRP) and malondialdehyde (MDA) as systemic inflammatory indices and lipid peroxidation and also swimming record in trained female swimmers. In this semi-experimental study, 16 trained female swimmers were divided randomly into two groups: in-water active recovery and out of water active recovery. They performed 6 bouts of 50m sprint swimming with 120s rest intervals actively in-out of water, in-and-out of water before and after 6 days of creatine supplementation. The three-way analysis of variance showed that 6 bouts of sprint swimming significantly increased MDA and CRP (P=0.001). Although the recovery type (in-and-out of water) had no significant effects on MDA, CRP and sprint swimming performance, creatine supplementation significantly reduced MDA (P=0.018) and improved swimming performance (P=0.006) in both recovery groups. It seems that specialized and non-specialized recovery strategies do not affect inflammation and stress inhibition resulted from HIIT, but creatine supplementation can reduce the systemic stress resulted from HIIT and maintain sprint swimming performance.



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