Hi Keerthi,
Your hair growth,it's thickness and speed of regrowth depends only on your genetics and hormones and shaving has nothing to do with it which is a scientific fact.You can clarify the same with a dermatologist as well as on Internet.
What you are talking about is not faster hair growth rather the blunt edge of the shaved hair which makes you feel like it is growing fast ,this is because you must be already having thick,coarse hair.