PH-Chucky, think of it this way: If you jump into a pool down to 1 meter, you just increased your pressure by 10% in less than a second. That's about 3000' of air pressure change in less than a second, or >180 000' feet per minute.
So anyone worried that a 1000' pressure change in 60 seconds could be a problem should certainly be careful getting into the bath. I'd suggest slowly lowering yourself into the bathtub over 2 minutes minimum, preferably 3.
Can't be too careful.