Effect of yogic practices on age related changes in oxygen metabolism and antioxidant-redox status -

Objective: The aim of the study was to evaluate the effect of yogic practice on age related changes in antioxidants and redox status, resting metabolism and energy expenditure. Methods: The study was conducted on 60 healthy male volunteers of three age groups viz 20-29 years, 30-39 years and 40-50 years. In addition to their routine activities, volunteers practiced yogasana, pranayama and meditation for a period of 3 months. Blood samples were collected in fasting condition before and after 3 months of yogic practice for the estimation of biochemical parameters. Results: Oxygen consumption and energy expenditure were decreased with the advancement of age and after yogic practice. Respiratory quotient was increased with the age and decreased after yogic practice. Advancement of age showed progressive shifting of redox status towards the oxidized state, which restored by yogic practice. Lowered levels of reduced glutathione, the ratio of reduced to oxidized glutathione, total antioxidant status, vitamin C and vitamin E as well as the activity of enzymes such as superoxide dismutase, catalase, glutathione reductase and glutathione S-transferase were associated with aging. The regular yogic practice helps to improve in these above mentioned parameters. Hydroperoxides, protein carbonyl, malondialdehyde and glutathione peroxidase levels were found to be higher due to progression of age. These have been decreased after yogic practice. Conclusion: Regular yogic practices have the ability to revert back with the changes in antioxidant and redox status due to advancement of age. © 2013 GESDAV