Evaluation of Muscle Performance in Patients with Vitamin D Deficiency: Preliminary Study

Aim: Vitamin D deficiency is very common in general population and has potentially harmful effect on musculoskeletal system. We aimed to show the effect of vitamin D de. ciency on the muscle performance by using isokinetic test. Meterial and Methods: This study includes 12 women with vitamin D de. ciency for patient group and 12 healthy women for control group. We compared knee muscles performance of these two groups by using isokinetic test. Results: The mean age was 40.71 (26-57) years in patients and 41.43 (28-58) years in healthy group. There was no statistical difference between two groups at knee. exion and extension pick-torque values in 60 degrees/s velocity and fatigue index in 180 degrees/s velocity (respectively, p1=0.86, p2=0.12, p3=0.42). Conclusion: Vitamin D de. ciency has no effect on muscle performance. Further invastigations that evaluating larger populations are needed.