737-P: A Wearable Device (CGM and Activity Tracker) RCT for Postpartum Women with a History of Gestational Diabetes—Preliminary Findings on Anthropometry Measures and Self-Reported Lifestyle Behaviours

Background: Women with a history of gestational diabetes mellitus (GDM) have a 7-fold increased risk for subsequent development of type 2 diabetes mellitus (T2DM). Continuous glucose monitoring systems (CGMS) and exercise trackers have not been thoroughly explored in any Asian postpartum diabetes prevention studies. Objective: The Integrated Hyperglycaemia Incentivised Postnatal Surveillance (I-HIPS) study aims to investigate the efficacy of a personalized lifestyle intervention programme using wearables along with physical activity (PA) and diet modification to achieve healthy weight loss in postpartum women with history of GDM. Methods: Women were randomized to receive the intervention or standard medical care. The intervention group received a CGM sensor and exercise tracker, along with nutrition, exercise and personalized goal-setting workshops. Anthropometric measures (weight, BMI and waist circumference (WC)) and PA assessed using the International Physical Activity Questionnaire were examined between the two arms at the 6-month follow-up. Changes in dietary behaviors in the intervention group were assessed using a validated 6P tool. Results: Twenty-six recruited women had completed the 6-month follow-up. At 6-month, compared with the controls, women receiving intervention achieved a mean difference in the reduction of weight by 0.5 kg, BMI by 0.2 kg/m2 and WC by 0.8cm (p>0.05). The intervention group had increased PA (mean difference: +990 MET mins/week), compared to the controls (mean difference: +298 MET mins/week) (p>0.05) at 6-month. Between baseline and 6-month, women in the intervention group showed a reduction in the frequency of snack and beverage intakes (p=0.01). Conclusion: Preliminary findings suggest a trend toward better health outcomes in the intervention group with improved dietary behaviour.