Increased oxidative stress in healthy children following an exercise program: a pilot study
- PMID: 20495476
- PMCID: PMC3014577
- DOI: 10.1097/DBP.0b013e3181dea44f
Increased oxidative stress in healthy children following an exercise program: a pilot study
Abstract
Exercise can induce oxidative stress or an imbalance between reactive oxygen species and cellular antioxidant defenses.
Objective: We investigated the effect of a real-life exercise program on systemic oxidative stress measured by urinary concentrations of 8-isoprostaglandin F2alpha (8-iso-PGF2 alpha), a noninvasive index of lipid peroxidation, in a well-characterized pediatric group.
Methods: Healthy but primarily sedentary, 8- to 10-year-old children (n = 6, mean age 8.8 +/- 0.9 years) of equally distributed healthy weight, overweight, and obese categories, participated in a 5-week exercise program (track and field summer camp, 2 hours/day, 1-2 days/week).
Results: By using high-performance liquid chromatography with online electrospray ionization tandem mass spectrometry (LC/ESI/MS/MS), we found a significant (p = .028) increase in group mean urinary 8-iso-PGF2 alpha concentration from 8.163 +/- 6.919 ng/mg creatinine pre-exercise program to 32.320 +/- 16.970 ng/mg creatinine post-exercise program. The increase was also measured at each individual level. We found preliminary evidence that pre- and post-exercise program urinary 8-iso-PGF2 alpha concentrations selectively correlated with children's cardiometabolic characteristics and mood.
Conclusion: Our results warrant further exploration of the relationships between pre/post-exercise oxidative stress marker 8-iso-PGF2 alpha and cardiometabolic characteristics, exercise habits, eating habits, and mood to determine whether increased post-exercise oxidative stress in healthy children is part of their normal adaptation to exercise or mediator of oxidative injury.
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References
-
- US Department of Health and Human Services. Physical Activity and Health: a Report of the Surgeon General. Atlanta, GA: CDC; 1996.
-
- Urso ML, Clarkson PM. Oxidative stress, exercise, and antioxidant supplementation. Toxicology. 2003;189:41–54. - PubMed
-
- Balog T, Sobocanec S, Sverko V, et al. The influence of season on oxidant-antioxidant status in trained and sedentary subjects. Life Sci. 2006;78:1441–1447. - PubMed
-
- Ozbay B, Dulger H. Lipid peroxidation and antioxidant enzymes in Turkish population: relation to age, gender, exercise, and smoking. Tohoku J Exp Med. 2002;197:119–124. - PubMed
