Impact of a 4‐week intensive track and field training intervention on glycaemia in adolescents with type 1 diabetes: The ChilDFiT1 study

Aim To investigate the safety and efficacy of track and field training compared with intensification of insulin treatment only in adolescents with type 1 diabetes (T1D). Materials and Methods Eighteen adolescents (seven females) with T1D were included (age 15.1 ± 1.1 years, HbA1c 7.3% ± 1.0% [56.3 ± 10.9 mmol/mol]). After a 4‐week observational control phase, participants were randomized to either stand‐alone intensive glycaemic management (IT; telemedicine or on‐site visits, three times/week) or additionally performed track and field exercise (EX; three 60‐minute sessions/week) for 4 weeks. Glycaemia was assessed via continuous glucose monitoring during observational control and intervention phases. Results Time in range (70‐180 mg/dL; 3.9‐10.0 mmol/L) significantly improved from the observational control phase to the exercise intervention phase in EX (69% ± 13% vs. 72% ± 11%, P = .049), but not in IT (59% ± 22% vs. 62% ± 16%, P = .399). Time below range 1 (54‐69 mg/dL;