i can pull 500 for a single but i still cant do a single rep of the glute ham raises
are rdls the same as sldl ?
But you can probably do damn near the entire stack on leg curls (not being a dick by any means)..right? If you can't do a single rep on GH raise it's usually one of two things 1. you're doing the movement improperly (there are a couple of ways to do this) and 2. You have a weak link in your posterior chain.
We're not designed to move in isolation (single joint) but rather in multi-joint and in multi-plains. If you're pulling a 500 deadlift chances are you're pulling with your hips and back which usually means you're not recruiting your hamstrings making it more hip dominant than knee dominant. Make sense?
When you have a weak link in your posterior chain (hamstrings, glutes, low back) it can create all kinds of problems, injury speaking not to mention doing a relatively simple bodyweight exercise such as GH raise. Your weak link is your hamstrings and should be worked simultaneously with glutes and low back.
The difference between RDL and 1RDL's is bi-lateral and uni-lateral (or open chain and closed chain) I prefer 1RDL's simply to balance strengths from one leg to the other. Since we don't walk two legs at a time (unless you hop everywhere) it only makes sense.
If you bodybuild and do isolation make sure you pair it with something thats multi-joint eg: Leg extensions/Single leg squat, leg curls/GH raise or 1RDL.