Study Characteristics and Results.

aParticipants performed one 2 hour supervised exercise session and an additional one 1 hour unsupervised session per week. Attendance for the unsupervised session was 52–89%.bAlthough reported as a RCT, groups were randomly assigned by a diabetologist to either exercise programme. It is not clear if the controls were selected randomly or those who didn’t attend the exercise session were designated as controls.cControl participants are the same for both interventions. These participants therefore appear twice in this table, explaining a total of 452 participants across all studies in this table.dWeighted mean (for two control groups).eRandomisation occurred before consent was sought.fParticipants could undertake an additional unsupervised exercise session at home.gMedian.