Preventing Type 2 Diabetes Among Midlife Women: A Feasibility Study Comparing a Combined Sleep and Lifestyle Intervention With a Standard Lifestyle Intervention.

Purpose: The purpose of this pilot study was to evaluate the feasibility, acceptability, and initial efficacy of adding a sleep extension intervention to a well-established diabetes prevention intervention among midlife women with short sleep duration at risk for type 2 diabetes.

Methods: For this 2-group comparative design, 26 women with prediabetes or metabolic syndrome and sleep duration <7 hours were recruited from the community to participate in an 8-session diet and physical activity lifestyle intervention alone (L-alone) or L-alone plus a behavioral sleep intervention (L+Sleep). Body mass index (BMI), waist circumference, and other outcomes were compared at baseline and 3 and 6 months using analysis of covariance.

Results: Incorporating a sleep intervention into lifestyle changes proved feasible and acceptable to midlife women at risk for type 2 diabetes. Significant decreases in BMI and waist circumference over time were observed in both groups, but comparative efficacy of L+Sleep versus L-alone yielded few group differences. Exploratory analysis indicated that women who increased their sleep to ≥7 h/night, regardless of group assignment, lost more weight than women who continued to report sleeping <7 h/night.

Conclusion: Adding sleep extension to a lifestyle change intervention proved feasible and satisfactory to participants, but initial efficacy did not differentiate the 2 intervention groups.