Women's Lifestyle Balance Study

The goal of this pilot study is to determine whether the efficacy of an existing lifestyle improvement program can be increased by adding a sleep extension and sleep hygiene intervention. Improved sleep can improve weight loss through two possible routes: lessening fatigue may potentiate physical activity (PA), and decreasing appetite may potentiate diet improvements. A sample of 24-30 women will be assigned to either the Centers for Disease Control's (CDC's) standard PreventT2 program or the same program with an additional integrated sleep intervention. Both programs will involve 8 group sessions administered over 3 months, and all women will be followed for a total of 6 months. The primary outcome is weight loss, and secondary outcomes include sleep quality and duration, physical activity, caloric intake, and physiological indicators of cardiovascular and diabetes risk (HbA1c, HOMA-IR, lipids, blood pressure). The combined program has the potential to significantly improve weight loss in those at risk for diabetes and cardiovascular disease (CVD).

Inclusion criteria

• Female (or self-identify as female)
• Age 30-70 years
• BMI 25-38 (or 23-38 if Asian or other Pacific Islander)
• Time in bed <= 7 hours on a typical weeknight
• Meets diagnostic criteria for prediabetes and/or metabolic syndrome

Exclusion criteria

• No regular access to telephone or email (for maintaining contact);
• No access to smartphone, tablet, or laptop computer (for using Fitbit);
• Having a condition that limits physical activity, such as brisk walking;
• Having a diagnosis of type 1 or type 2 diabetes or been previously treated with diabetes medications;
• Having a cardiac event or cardiac surgery in the past year;
• Having a metabolic condition that prevents weight loss;
• Working night shift (Midnight - 4 AM)
• Inability to complete the baseline assessment (REDCap survey and Fitbit tracking of activity, diet, and sleep for 7 days)