My gym has a leg press on which the platform is flat at the bottom and angled at the top? I see folks using it both ways..... which is correct. Personally, I have short legs and the angled top position does not work well for me. I seem to get more quad involvement in the lower position.
Also, I hear a lot of talk about back injuries from the leg press- How is this possible? When I perform this - my back is flat against the seat. Am I wrong?