I require form a diabetic client a physician’s approval.
What you need to consider depends quite a bit on the severity and nature of the diabetes. The client may have to get instruction from a diabetes educator about monitoring glucose levels before and after exercise and possibly adjusting the food intake and insulin administration. If neuropathy has developed, the client may have balance problems. Until you know how the client will respond, it will be a good idea to have some juice at the ready in case the client becomes hypoglycemic.
Most of the rest of the training will depend a lot on the base condition as with every other client. Many diabetic clients are in poor health but they can also present as a person in very good shape, particularly when they have type 1 diabetes.
It will be advisable to have a specific conversation with the client about his experience of exercise and its effect on diabetes. Remember that diabetes management is the client’s responsibility, not yours, but you need to know the warning signs of trouble. Here is a link to the Mayo Clinic’s information http://www.mayoclinic.org/diseases-conditions/diabetic-coma/basics/sympt….