How did the costumes give the actors back problems?

Jumbo, or Super Spandex, whatever you want to call that heavier weight stretch, will stretch from side to side or top to bottom, depending on how you cut the garment.

The costume would dig into their shoulders, wearing them twelve hours or fifteen hours a day, it really just digs in and Patrick was having a lot of back problems at that point. The second thing is that Spandex is unforgiving, so if you have any sort of body issues, they are there. Thirdly, Spandex retains odour. So there is a certain part where if you�re wearing them for a long period of time, you can�t really clean all the smell out, and it becomes a little bit annoying. And it also retains the odour of the dry cleaning fluid. So, it�s a little bit, on a day-to-day basis, unpleasant.