P01.46. Assessment of autonomic tone at rest and during meditation in a longitudinal study of an eight-week meditation intervention
BMC Complementary and Alternative Medicine June 1, 2012 Gaelle Desbordes, Riccardo Barbieri, Luca Citi et al.
Electrocardiogram recordings from eight healthy adults without prior meditation experience, collected as part of a larger randomized controlled trial, showed that an eight-week mindful-attention meditation intervention increased heart rate variability (HRV) and decreased the LF/HF ratio, indicating improved autonomic function and more predominant vagal tone. These changes were not seen in the control group. A marked increase in respiratory sinus arrhythmia (RSA) occurred during meditation compared to rest. The authors suggest RSA may be a useful marker of the meditative state and encourage further research on HRV measures as indicators of autonomic health after meditation.