A new trial published in the Diabetes Technology & Therapeutics suggests that the Hedia Diabetes Assistant (HDA), an insulin bolus calculator with an integrated exercise feature, can be safely used by people with type 1 diabetes (T1D) to manage blood sugar during moderate-intensity workouts. The risk of hypoglycemia may often complicate these workouts.
The randomized, controlled crossover study enrolled 20 adults with T1D for more than one year. These patients were using multiple daily insulin injections and had HbA1c levels between 6.0% and 8.6%. 
Participants were randomized to either use HDA or their usual diabetes management approach before and after a 45-minute moderate-intensity cycling session. The participants were then switched to the opposite method.
The primary outcome, time in range (TIR) over 24 hours, showed no significant difference between HDA and habitual management (mean difference -2.3%). Time above range was slightly higher with HAD (3.93%), and time below range was modestly reduced (-0.87%). 
The incidence rate of hypoglycemic episodes was lower when using HAD (-0.56). The safety analysis revealed fewer adverse events.