Mindfulness-based intervention does not influence cardiac autonomic control or pattern of physical activity in fibromyalgia during daily life: An ambulatory, multi-measure randomized controlled trial*

From the Department of Psychosomatic Medicine, Division of Internal Medicine, University Hospital Basel, Basel Switzerland (P.G., G.D); Institute of Transcultural Health Studies, European University Viadrina, Frankfurt (Oder), Germany (H.W., S.S.); Brain, Mind and Healing Program, Samueli Institute, Alexandria, VA, United States (H.W., S.S.); Institute of Environmental Health Sciences, University Medical Center, Freiburg, Germany (B.S.); Department of Psychosomatic Medicine, University Medical Center, Freiburg, Germany (S.S.). Address correspondence and reprint request to Paul Grossman, Department of Psychosomatic Medicine, University Hospital Basel, Hebelstrasse 2, CH-4031 Basel, Switzerland. Email: [email protected] .