Here you have a link where you can download a PDF about sport and diabetes.Unfortunately and as with a large part of literature is aimed at doctors, however it is not very difficult to understand and I will be delighted to solve doubts:
I see some limitations such as presupposing that diabetics have unlimited glycemia strips (we have already talked about this in other posts).
Anyway, it is worth reading, sport is the most effective agent in reducing insulin resistance (which is the basis of type 2 diabetes).Demonstrated that it is more effective than metformin and the already glitazon withdrawal.
All the best