Quantitative EEG correlates of 'Kriya yoga' benefits for mental health among health care providers.

Abstract

Health care workers (HCWs) experience abounding physical and mental exhaustion mandating a deliverable solution for their mental health care. Kriya yoga (KY) includes several relaxation techniques and offers a stress-alleviating experience. The objective signature of KY benefits needs to be investigated. To study the effects of KY practice on brain oscillations and perceived stress in health care providers. This prospective interventional study was conducted during coronavirus disease 2019 pandemic. HCWs were enrolled to the intervention group (IG) and control group (CG) after obtaining an informed consent. IG visited the yoga center for learning the KY technique. Electroencephalogram (EEG) was recorded in both the groups, at baseline, and at the end of 6 weeks in the EEG Laboratory. Perceived stress scale (PSS) scores and participants' subjective response to KY practice were also collected. Paired t-test and independent t-test were used for statistical comparison wherever applicable. Age and baseline EEG powers among the IG and CG (N = 25) were statistically comparable. Absolute power analysis revealed a statistically significant increase in alpha and delta powers after 6 weeks of KY practice. The PSS scores revealed a statistically significant decrease in perceived stress after KY practice. Furthermore, 83% of the participants reported the subjective calming effects of KY practice. KY practice ensues relaxing effects on the brain, as evident from the EEG absolute power analysis, PSS scores, and participants' subjective response. As KY is a brief technique, it may be encouraged during short break session among the HCWs for promotive health.