A recent study from Denmark did show that strength and overall physical capacity does make a difference in lifting. They measured pressure in the abdomen and on the spine in judo and jujitsu fighters while lifting patients. The fighters are used to throwing their opponents down while putting their own bodies in a twisted and bent position. Yet they rarely hurt their backs.

So there's something to be said for being in good shape and strong before lifting patients. An overall physical conditioning program may be best (for you and your patients). Whenever possible, use a lifting device. Otherwise, try and team up with a co-worker to maximize your safety. Proper lifting is also important. Make sure you are fully trained before starting work. Let your supervisor know you'd like training in this area.