Say NO to fibromyalgia and chronic fatigue syndrome: an alternative and complementary therapy to aerobic exercise. Med Hypotheses. 2004;63(1):118-23. Marvin A. Sackner [*], Emerance M. Gummels and Jose A. Adams Mt. Sinai Medical Center of Greater Miami, Division of Pulmonary Disease and Critical Care Medicine and Department of Neonatology, Miami Beach, FL 33140, USA [*] Corresponding author. Tel.: +305-532-6329; fax: +305-532-0938 E-Mail: mailto:artchive@msn.com Received 28 January 2004; accepted 31 January 2004. Available online 15 April 2004. NLM Citation: PMID: 15193362 Abstract: Increased shear stress to the endothelium increases activity of endothelial nitric oxide synthase (eNOS) with subsequent release of small quantities (nMol) of nitric oxide (NO) into the circulation. It occurs during moderate aerobic exercise mostly as a result of laminar shear stress and with whole body, periodic acceleration as a result of pulsatile shear stress. The latter is administered by means of a new, non-invasive, passive exercise device. Moderate exercise has long been known to alleviate the symptoms of fibromyalgia and chronic fatigue syndrome and in the current study, whole body, periodic acceleration did as well. Since NO through action of eNOS has potent anti-inflammatory properties mainly by suppressing nuclear factor kappabeta activity, it is hypothesized that both diseases have chronic inflammation as their basis. Whole body periodic acceleration can be applied separately or supplementary to aerobic exercise in the treatment of fibromyalgia and chronic fatigue syndrome.