Flaws in the meta-analysis of comparison between different types of exercise training in patients with type 2 diabetes mellitus: A letter to the editor

We carefully read Mannucci et al.'s meta-analysis [1] comparing the effects of different exercise types on type 2 diabetes. In this paper, they compared the effects of different exercises on blood glucose control and cardiovascular risk factors such as BMI, body fat percentage and blood pressure in patients with type 2 diabetes. Although this is an excellent paper, there are still some flaws.