In humans, gamma-aminobutyric acid (GABA) is directly responsible for the regulation of muscle tone. Low GABA levels are associated with depression and other widespread anxiety disorders.
To study the association between yoga and changes in mood and anxiety, researchers followed 34 Americans with no significant medical / psychiatric disorders, who were randomised to yoga or walking for an hour thrice a week for three months. Mood and anxiety scales were taken at weeks 0, four, eight, 12, and before each magnetic resonance spectroscopy scan. Researchers compared the brain gamma-aminobutyric acids (GABA) levels of yoga participants with those who spent time walking.
It was found that those who practiced yoga had a significant decrease in anxiety and greater improvements in mood than those who simply walked.
The study suggests that yoga can be effective in improving mood and relieving anxiety.
Source: NDTV
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