Repeated Supramaximal Exercise-Induced Oxidative Stress: Effect of β-Alanine Plus Creatine Supplementation.

Background: Carnosine is a dipeptide formed from the β-alanine and histidine amino acids and found in mainly in the brain and muscle, especially fast twitch muscle. Carnosine and creatine has an antioxidant effect and carnosine accounts for about 10% of the muscle's ability to buffer the H(+) ions produced by exercise.

Objectives: The aim of the study was to investigate the effects of beta alanine and/or creatine supplementation on oxidant and antioxidant status during repeated Wingate tests (WTs).

Comparison of oxidative stress and antioxidant capacity before and after running exercises in both sexes.

Background: It has been difficult to determine, from the published literature, whether men or women have higher levels of exercise-induced oxidative stress.

Objective: The aim of this study was to compare variations between the sexes in lipid hydroperoxide (LPO), superoxide dismutase (SOD), catalase (CAT), glutathione reductase (GR), and lactate dehydrogenase (LDH) after 3 different running exercises performed at the same speed.

Methods: Eligible participants were healthy university students of both sexes.

Changes in lipid peroxidation and antioxidant capacity during walking and running of the same and different intensities.

The aim was to investigate the changes in lipid peroxidation, antioxidant enzyme activities, and muscle damage in the same and different exercise intensities during walking and running. Fourteen healthy males participated in this study. The subjects' individual preferred walk-to-run transition speeds (WRTS) were determined.