Front squats, deadifts, stiff-leg deadlifts, and dumbbell rows will help you. 5x5 with an 8 rep max, with a fast, powerful concentric motion will get the job done.
Just because you can lift your half of a 250# patient in a controlled testing environment doesn't mean that you're ready for the street. Many lifts are done with unfavorable leverages, and may need to be done from an awkward angle. Think about an obese pt in a bathtub, someone wedged between the bed and the wall, or carrying a stair chair down a staircase that has a small landing, and tight turns.
Just because you can lift your half of a 250# patient in a controlled testing environment doesn't mean that you're ready for the street. Many lifts are done with unfavorable leverages, and may need to be done from an awkward angle. Think about an obese pt in a bathtub, someone wedged between the bed and the wall, or carrying a stair chair down a staircase that has a small landing, and tight turns.