Studies have shown a beneficial role of yoga in tre a t i n g type 2 diabetes mellitus. The present study proceeds in the field by providing an active control. We aimed to evaluate the effect of 3 months of yoga on oxidative stress, glycemic status, and anthropometry in type 2 diabetes mellitus. Forty participants were randomized to receive either yoga (n = 20) or sham yoga (n = 20) as a control. Yoga included postures and breathing exercises, and nonaerobic stretching exercise comprised the control. Significant within-group differences in malondialdehyde, vitamin C, superoxide dismutase, fasting blood glucose, glycosylated hemoglobin, body mass index, waist circumference, and blood pressure were evident in both groups. Yoga participants had significantly greater improvement in reduced glutathione compared to controls. No significant differences between groups were observed in any other outcome variables. Yoga and sham yoga had identical effects on oxidative stress, glycemic status, and anthropometry in type 2 diabetes mellitus. Levels of reduced glutathione improved only in the yoga group. This research needs to be confirmed by larger and sufficiently powered studies.
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