Sequential use of continuous glucose monitoring, with or without exercise trackers, significantly improves glycaemic control in patients with Type 2 Diabetes: A Randomised Control Trial

Aims: To examine whether sequential Continuous Glucose Monitoring Systems (CGMS), with or without an exercise tracker, would improve glycaemic control in middle-aged patients with Type 2 Diabetes (T2D) Methods : This was a 6-month prospective study. Participants (n=138) were randomised into groups wearing CGMS alone (CGM, n=82) or CGMS with a Fitbit (CGM-Fit, n=76). Median age was 58, and HbA1c, 9.7%. All participants wore three CGMS over six weeks. Results: Overall, time-in-range increased (61% to 71%) and HbA1c significantly reduced by 1.5% in both groups at 3rd-month post-CGMS, independent of weight changes. Between 3 and 6 months, the CGM group experienced a greater HbA1c rebound (+0.7%) than the CGM-fit group (+0.4%). Physical activity levels were maintained in the CGM-fit group but reduced in the CGM group. Conclusions: Sequential CGMS significantly improved HbA1c, with an exercise tracker helping sustain improvements in glycaemic control.