Hi Jamesmayur.
Most physios with undergraduate training in India have problems meeting the NZ Physio Board requirements for registration in NZ.
The WINTEC course would give you a qualification completely outside physiotherapy. It would not improve your chances of registration in here or many other countries such as Australia. And it would not be considered part of physiotherapy practice although it would be broadening your skills.. However if you wanted to pursue an exercise physiology career this sort of course would do.
WINTEC is not a University. It is a polytechnic which in NZ means a lower level of education than a university. Personally I would be more inclined to apply for a more prestigious institute. In Auckland both AUT (Auckland University of Technology) and Auckland University offer post graduate courses in sport and exercise science. AUT is where one of the schools of physiotherapy is housed so you would have that link. Auckland University is one of our top universities and they do some excellent research in the exercise science area - including some rehabilitative science. Have a look at their programmes
If you want to pursue a physiotherapy career then you would be better off going to one of the physiothereapy schools. In which case consider either Otago university in the South Island or AUT physiotherapy school post grad qualifications. Have a look on their websites and you will see what post grad degrees and course that make up these degrees are available. While it is difficult for to get registration to practice in NZ temporary registration is much more easily attained that you can apply for when enrolling in a course. We have a lot of Indian physios completing higher degrees at these schools and the experience generally seems favourable.
One word of warning: when you have completed your post graduate qualification there may still be hurdles to permanent registration as the board is interested in your basic competencies in cardiopulmonary, neurological and musculoskeletal physiotherapy. However NZ post grad physio courses have good international standing in physiotherapy