I'm trying to accomplish all I can at homewithout a gym membership. I don't have a barbell at this time, so I've been doing dumbell bench presses instead.
But now I want to increase the wieght without going out a buying new equipment. So I had the idea of working the same muscle groups by doing a weighted push up instead. I put a dumbell into a backpack and did pushups, elevating my feet on a pilates ball to add more weight to the lift. However, the dumbell settles on my mid back region, pressing down in that area, which changes the dynamics of the lift.
Is this a viable alternative to a barbell bench press? Am I risking a back injury by having a weight on my mid-back?
Is there a formula for converting a pushup to a bench press? I'm guessing that with a flat push up, you can multiply your body wieght times some figure (.7?) to get the equivelent bench press weight. If you elevate your feet, you get a higher number (.8?).