Tai chi (TC) has beneficial effects on blood pressure (BP) and levels of gaseous cellular signaling molecules in the blood of patients with essential hypertension (EH). In a Chinese study, 24 EH patients were assigned to a tai chi exercise group (HTC), while another 16 formed the control hypertension group (HP) who received no intervention. Sixteen healthy volunteers matched for age and gender were recruited as controls (NP). The HTC group performed TC for 60 minutes per day, six days per week for 12 weeks. By week 12, systolic blood pressure (SBP), diastolic blood pressure (DBP) and mean arterial pressure (MAP) had decreased significantly in the HTC group. Over the same time period in the HTC group, levels of blood lipids were found to have improved significantly, while plasma levels of the vasoactive gaseous signalling molecules nitric oxide (NO), carbon monoxide (CO) and hydrogen sulfide (H2S) had increased. Correlations were observed between changes in SBP and MAP and changes in NO, CO and H2S. No changes were observed in the HP and NP groups. (Effects of Tai Chi exercise on blood pressure and plasma levels of nitric oxide, carbon monoxide and hydrogen sulfide in real-world patients with essential hypertension. Clin Exp Hypertens. 2014 Feb 3. [Epub ahead of print]). http: / / www.ncbi.nlm.nih.gov / pubmed / 24490621

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