Should I use a filter indoors?

I just started doing a lot of indoor sports photography, and I had realized that I left a filter on one of my lenses. So not knowing too much about using filters indoors, should I? I did take them all off, thinking they might limit me somewhat in poorly lit gymnasiums, but figured I ask the masses here.

Thanks!

They won't affect your light level, so the only thing you might need to worry about is light sources in the frame causing flare and / or reflections in the image. The better the filter. the less likely that is to happen.

Personally, I wouldn't use them, but I don't use them outdoors either (apart from CPL, GND etc)

Yea, I would think maybe reflections from the gym floor might be a problem, but haven't been to very many different gyms yet this season.

Thanks for your reply...