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J Exerc Rehabil. 2014 Dec 31;10(6):362-6. doi: 10.12965/jer.140178. eCollection 2014 Dec.

The effects of ketogenic diet on oxidative stress and antioxidative capacity markers of Taekwondo athletes.

Author information

1
Department of Sports Health Medicine, College of Health Science, Jungwon University, Goesan-gun, Chungcheongbuk-do, Korea.
2
Department of Human Movement Science, Seoul Women's University, Seoul, Korea.
3
Department of Physical Education, Yonsei University, Seoul, Korea.

Abstract

The purpose of this study was to investigate the effects of the ketogenic diet through 3 weeks on oxidative stress and antioxidative capacity markers in Taekwondo athletes. The participants selected for this research were 18 high school taekwondo contestants aged 15-18 who had at least 5 yr of career as contestant. The subjects were randomly assigned to the ketogenic diet (KD) group and the Non ketogenic diet (NDK) group. Body composition and oxidative stress and antioxidative capacity markers (LDH, MDA, ROS, HDL, and SOD) were analysed before and after 3 weeks of ketogenic diet. No significant difference was found between the groups in body composition, ROS and SOD level. The KD group showed an elevated HDL level and NKD group showed an elevated LDH and MDA level after ketogenic diet by 3 weeks. This result suggests that weight loss by 3 weeks of calorie restriction and exercise can cause oxidative stress, and that ketogenic diet can be effective for preventing it. It could also be inferred that ketogenic diet can be effective for increasing blood antioxidative capacity.

KEYWORDS:

Antioxidative capacity; Ketogenic diet; Oxidative stress; Taekwondo

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