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Depression: 21st Century Solutions + The Dark Side of Wheat

Abstract Title:

Effect of Tai Chi exercise on DNA damage, antioxidant enzymes, and oxidative stress in middle-age adults.

Abstract Source:

J Phys Act Health. 2009 Jan;6(1):43-54. PMID: 19211957

Abstract Author(s):

J A Goon, A H Noor Aini, M Musalmah, M Y Yasmin Anum, W M Wan Nazaimoon, W Z Wan Ngah

Article Affiliation:

Department of Biochemistry, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia.

Abstract:

BACKGROUND: The biochemical mechanisms involving oxidative stress to explain the relationship between exercise and healthy aging are still unclear.

METHODS: Tai Chi participants and matched sedentary volunteers age 45 and above were enrolled. Glutathione peroxidase (GPx), superoxide dismutase (SOD), and catalase (CAT) activities; levels of DNA damage using the comet assay; and malondialdehyde (MDA) and advanced glycation end products (AGE) were determined at 0, 6, and 12 months.

RESULTS: Tai Chi subjects had decreased normal and increased mildly damaged DNA with elevated GPx activity after 6 months (n=25). Plasma MDA and AGE concentrations decreased significantly after 12 months (n=15) accompanied by increased SOD activity. This may be attributed to the hormesis effect, whereby mild induction of oxidative stress at the first 6 months of exercise resulted in stimulation of antioxidant defenses. These parameters were unchanged in the sedentary subjects in the first 6 months (n=27) except for elevated SOD activity. After 12 months, the sedentary subjects (n=17) had decreased normal DNA and increased severely damaged DNA with unaltered MDA and AGE levels while SOD and GPx activities were significantly elevated.

CONCLUSION: Regular Tai Chi exercise stimulated endogenous antioxidant enzymes and reduced oxidative damage markers.

Study Type : Human Study

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Depression: 21st Century Solutions + The Dark Side of Wheat

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