Effect of a 12-Week Aerobic Exercise Training on Serum Fetuin-A and Adipocytokine Levels in Type 2 Diabetes

Objective We aimed to evaluate the effect of 12-week aerobic exercise training on fetuin-A levels in type 2 diabetes mellitus and examine the relationships between fetuin-A and adipocytokine levels and cardiovascular risk factors. Methods The study included 32 patients with type 2 diabetes mellitus who were assigned to an exercise or a control group. The exercise group underwent 12 weeks of exercise (consisting of a 5-min warm-up, 60-min aerobic bicycle training performed at 70% of the maximal heart rate, a cool-down period, 5 times/week). Adiponectin, resistin, and fetuin-A serum levels were measured using enzyme-linked immunosorbent assay. Leptin serum levels were measured by a radioimmunoassay. Results Exercise for 12 weeks significantly reduced serum fetuin-A (643.1 +/- 109.4 to 448.7 +/- 92.5 mu g/mL, P<0.05), leptin (11.9 +/- 7.2 to 8.6 +/- 5.7 ng/dL, P<0.05), and resistin (3.2 +/- 1.5 to 2.2 +/- 1.4 ng/mL, P<0.05) levels, but increased adiponectin (6.9 +/- 1.9 to 8.1 +/- 1.7 mu g/mL, P<0.05) levels. In the exercise group, Delta fetuin-A positively correlated with differences in weight (r=0.654, P=0.046), body mass index (r=0.725, P=0.002), waist circumference (r=0.898, P=0.013), and adiponectin levels (r=0.662, P=0.035). Conclusions Aerobic exercise significantly decreased serum fetuin-A levels in type 2 diabetes mellitus, which can be attributed to weight loss and related to increased adiponectin levels.