Yoga Combined With Health Education for Risk Reduction of Metabolic Syndrome: A Randomized Controlled Pilot Feasibility Study

Objective: The primary treatment for adults with risk factors for metabolic syndrome is lifestyle change, though adoption of traditional lifestyle programs is often limited. This pilot study tested the feasibility of conducting a randomized clinical trial comparing a novel targeted yoga program coupled to lifestyle education versus lifestyle education alone among adults with metabolic syndrome risk factors. Design and methods: Patients from primary care clinic were pre-screened electronically and further screened for metabolic syndrome. Consented participants were randomized to either a 12-week yoga program with lifestyle education or lifestyle education alone. Participants in the yoga arm received weekly 30 to 45 min of face-to-face yoga instruction, followed by 30 to 45 min of lifestyle education, and written instructions for home yoga practice and lifestyle changes. The lifestyle education was based on (EDU) the Group Lifestyle Balance Program that is adapted from the Diabetes Prevention Program. Participants in EDU only group received a weekly standardized curriculum matched in attention and time to the yoga with EDU arm. The primary outcome was to assess the feasibility of conducting a randomized trial by assessing recruitment rate and adherence to the protocol. Secondly, we aimed to collect preliminary data on changes in cardiometabolic factors including insulin resistance (IR) as measured by Homeostatic Model Assessment of Insulin Resistance (HOMA-IR), blood pressure, fasting lipids, body weight and composition, habitual physical activity, and dietary intake from baseline to 12-week intervention. Results: We identified 238 adults at high risk for metabolic syndrome medical records review utilizing an electronic recruitment tool. Among eligible individuals, 67 (28%) were enrolled and 56 (84%) completed the 12-week assessment. The median attendance was 8 of 12 sessions for the yoga with EDU and 9 of 12 sessions for the EDU arm. Self-reported median frequency of home practice was 2.8 (IQR 1.4) times per week among the yoga with EDU group and 3.3 (IQR 1.1) times per week among the EDU group. Participants in the yoga with EDU arm versus EDU alone demonstrated a non-significant decrease in HOMA-IR (-0.21 (S.D. 0.99) versus 0.02 (S.D. 0.74), p=0.29). Both groups had similar changes in blood pressure, lipids, weight, body composition, energy intake, and physical activity from baseline to 12 weeks. Conclusions: It is feasible to implement yoga combined with EDU and conduct a prospective trial to assess effectiveness on cardiometabolic risk reduction in adults with metabolic syndrome.