Effect of Vitamin D3 Supplementation on Cardiac Autonomic Nerve Function in Male Parkinson's Disease Patients With Hypovitaminosis D

The goal of this clinical trial is to see the effect of vitamin D3 supplementation on cardiac autonomic nerve function in male Parkinson's disease patients with hypovitaminosis D Main questions it aims to answer are: 1. Does vitamin D improves heart rate variability(HRV) in male Parkinson's disease patients ? 2. Does vitamin D improves cardiac autonomic nerve function in male Parkinson's disease patients ? It is a self control trial. Vitamin D3 deficient Parkinson's disease participants will a. undergo through baseline HRV test b. Then they will take vitamin D3 capsule 50000 IU once in a week for 8 consecutive weeks c. Then after intervention with vitamin D supplementation post interventional HRV will be done. Researcher will compare pre intervention(pre test) and post intervention(post test) value of HRV