Study design
This randomized, cross‐over, exploratory study design included 20 participants (9 young, active participants and 11 older, active participants). Participants had glycemic control assessed via CGMS (iPro2, Enlite Sensors, Medtronic Plc.) for 3 days while performing their normal habitual exercise (EX) and for 3 days while refraining from habitual exercise (NOEX). All participants completed 1 exercise session on each of the 3 days during the EX phase, except 1 young subject who only participated in exercise on days 1 and 3 of the study intervention.The primary outcome of glycemic control was 1‐h PPIG. We also measured 2‐h PPIG, 2‐h PPIG AUC, 24‐h blood glucose maximum, and 24‐h blood glucose standard deviation. Subjects were randomized by phase order using an online randomization tool (Research Randomizer Version 4.0) (Urbaniak & Plous, Flow diagram for study enrollment, participant allocation, and data analysis