While i dont have an answer to your question, i was hoping i could tag on another question. When i do RDL’s or SSDL’s my lowerback starts to hurt before my legs even start to feel it. am i using too much weight? is my back just too weak relative to my hamstrings to handle that exercise?[/quote]
I used to have this problem too. My solution was simple: a change in technique, hence the RDL. I would focus on sticking my ass to the rear as far as possible on the decend, imagine trying to touch a wall behind you with your glutes, and keep the bar as close to my body as possible. I feel SLDL do actually target the lower back way more, so RDL’s should be the answer to your problem. Just keep the bar close to your body and stick your ass out so that you feel a “stretch” in the hamstrings.