Kinesiology to Industrial Design- help!

I am currently graduating with a bachelor degree in kinesiology but I’ve decided in the last few months that I actually want to design athletic footwear thus needing to take design classes. I have no portfolio so I assume that would need to create one probably within some kind of certificate program? Does anyone have any recommendations for programs on the east coast or in England? I need some direction- any tips would be much appreciated! Thanks!