https://care.diabetesjournals.org/content/diacare/39/11/2065.full.pdf
It has also been established that low cardiovascular fitness is a strong and independent predictor of all-cause mortality in patients with type 2 diabetes.Indeed, patients with diabetes are 2 to 4 times more likely than healthy individuals to suffer from cardiovascular disease, due to the metabolic complexity and underlying comorbidities of type 2 diabetes including obesity, insulin resistance, dyslipidemia, hyperglycemia, and hypertension.
In a meta-analysis of 9 randomized trials comprising 266 adults with type 2 diabetes, patients randomized to 20 weeks of regular exercise at 50% to 75% of their maximal aerobic capacity (VO2max) demonstrated marked improvements in HbA1c and cardiorespiratory fitness. Importantly, larger reductions in HbA1c were observed with more intense exercise, reflecting greater improvements in blood glucose control with increasing exercise intensity.
Exercise helps in reducing cardiovascular risk associated with diabetes
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5846677/