Hypoglycemic and antioxidant effect of Tai chi exercise training in older adults with metabolic syndrome

Víctor Manuel Mendoza-Núñez,1 Taide Laurita Arista-Ugalde,1 Juana Rosado-Pérez,1 Mirna Ruiz-Ramos,1 Edelmiro Santiago-Osorio2 1Research Unit on Gerontology, FES Zaragoza, National Autonomous University of Mexico, Mexico City, Mexico; 2Hematopoiesis and Leukemia Laboratory, Research Unit on Cell Differentiation and Cancer, FES Zaragoza, National Autonomous University of Mexico, Mexico City, Mexico Introduction: The antioxidant and anti-inflammatory effects of Tai chi (TC) exercise training in healthy older adults has been demonstrated. However, there are no studies on this effect in older adults with metabolic syndrome (MetS).Purpose: The aim of this study was to determine the effect of TC exercise on oxidative stress and inflammatory markers in older adults with MetS.Methods: A quasi-experimental study was carried out with a sample of 110 older sedentary volunteers with clinical diagnoses of MetS: (i) a control group, n = 50, of individuals who do not participate in physical exercise, of which 37 fulfilled the entire study protocol, and (ii) an experimental group, n = 60, of subjects enrolled in a TC exercise training program (eight-form easy), 5 days a week for 6 months, in sessions of 50 min, under the supervision of a qualified instructor, of which 48 fulfilled the entire study protocol. We measured in both groups (pre- and post-intervention) the following cardiovascular parameters: resting heart rate (RHR), diastolic and systolic blood pressure (DBP and SBP), mean arterial pressure (MAP), RHR-SBP product, RHR-MAP product; glycosylated hemoglobin (HbA1c); oxidative stress markers (superoxide dismutase, total antioxidant status, thiobarbituric acid reacting substances, and oxidative stress score); and inflammation markers (TNF-α, IL-6, IL-8, and IL-10).Results: A statistically significant decrease in HbA1c concentration was observed in the TC group compared with the control group (p < 0.05). This group also showed a statistically significant increase in TAS and a decrease in the oxidative stress score (p < 0.05). We did not observe changes in the cardiovascular parameters (RHR, DBP, SBP, MAP, RHR-SBP product, and RHR-MAP product) in the TC experimental group compared to the control group.Conclusion: Our findings suggest that the practice of TC exercise has an antioxidative and hypoglycemic effect in the elderly with MetS. Keywords: Tai chi, oxidative stress, older subjects, metabolic syndrome, HbA1c &nbsp