Subjects ( n = @ ) on continuous subcutaneous insulin infusion ( five females , @ males ; median -LSB- range -RSB- age , @ -LSB- range , @-@ -RSB- years ; median -LSB- range -RSB- diabetes duration , @ -LSB- @-@ -RSB- years ; median -LSB- range -RSB- glycated hemoglobin , @ % -LSB- @-@ @ % -RSB- ) exercised until the PLGM system suspended insulin delivery or until the reference blood glucose value ( HemoCue ( ) ; HemoCue GmbH , Groostheim , Germany ) reached the predictive suspension threshold setting .