Inter- and Intraindividual Variability of the Acute Glucose Response to Exercise in Healthy Adults and People Living With Type 1 Diabetes: A Cross-over Replicate Trial

"After a 12h overnight fast, baseline measurements are collected. Participants are then provided with a standardized breakfast meal (60g carbohydrate). After consumption of the breakfast, participants remain seated seated for 30 minutes, before cycling on a cycle ergometer for 30 minutes at an intensity equivalent to 10% above the first ventilatory threshold (VT1). Sixty minutes of rest sitting on a chair will follow the 30-minute cycle.~During the total 120 minute test, various measurements are collected at regular intervals, including: blood glucose measurements via finger prick, CGM measurements, RPE, HR, measures of heart rate variability (HRV) (RMSSD (Root Mean Square of Successive Differences) and SDNN (Standard Deviation of NN intervals)), and intensity of any hypoglycaemia-related symptoms using a Visual Analogue Scale (VAS)."

The procedure for the resting condition visits is identical to that of the exercise condition, with the only difference being that the 30-minute cycling session will be replaced by an additional 30 minutes of seated rest. This will ensure that the total duration of the session and the timing of all measurements will remain consistent across conditions.