A Comparison of Hatha Yoga and Mediation on Mental Health Outcomes.

There are knowledge gaps that need to be addressed in understanding the effects of yoga, specifically long-term interventions, on physiological markers, electroencephalography (EEG) and heart rate variability (HRV) and elevated mental health symptoms in young adults. The present study will address the knowledge gaps by evaluating the effect of a 10-week (2x a week; 45-minute per session) Hatha yoga intervention in adults ages 18-25 (n = 45). Participants will be truly randomized to three groups: waitlist control (usual routine), Hatha yoga (experimental group), and meditation (active comparative group). This design will allow the investigators to determine the effects of Hatha yoga on relevant outcome measures. Changes in depression symptoms (BDI), anxiety symptoms (BAI), EEG alpha and theta band power, heart rate variability indices (RMSSD, LF/HF) will be assessed. Compared to the control group, investigators hypothesize that both the Hatha yoga and meditation groups will exhibit an improvement in depression and anxiety symptoms, an increased alpha and theta band power at rest, and an increased RMSSD and decreased LF/HF at rest. Moreover, the investigators hypothesize that the Hatha yoga group will improve body composition, flexibility, muscular endurance and strength, and cardiovascular recovery more than the meditation group.