Is it possible for stress echo cardiogram on treadmill to cause a lower back strain, sprain, or injury?

Back strain. Running on a treadmill is a typical form of cardiac stress testing. If you were unlucky enough to strain your back, perhaps the amount of your walking and exercise didn't adequately prepare you for running on a treadmill. But given the brief duration of actual exercise on the treadmill i suspect you may have been pretty sedentary?