T Nation

Stiff Leg Deadlift vs Good Morning?


#1

I know what the difference is, but what does the stiff legged deadlift do that the good morning doesn't? Don't they pretty much accomplish the same thing?


#2

Yep, but because of the positioning of the bar, you’re stressing the back (spinal erectors, lower back) a bit more than a stiff legged deadlift. ALSo, because you usually can’t go as deep as you can on the good morning, you don’t work the hamstrings as much.

In essence:

SLD = more hamstring involvement

GM = more lower back involvement

I also forgot to say that because you can’t lock out on the good morning like you can on the deadlift, you don’t recruit your glutes as much either.


#3

I treat good mornings as a core exercise, for abdominals, glutes, and erectors, so I used them when i need more stability in my lifts.

I use SLDLs as a strength and size exercise for when i just need stronger legs.

ie: my deadlift is stuck at 405x1. but when i slap on a belt i can do it for 5 reps easily. I need more good mornings and isometric abdominal work.

what if my deadlift is more like 405x4 raw and 405x5 belted. well then i just need to get stronger hams and glutes, SLDLs come into play. SLDLS also help with grip

usually the first example is the problem.

If you are bodybuilding i wouldn’t even suggest doing GMs because the injury potential is too high, and bodybuilding is always maximum muscle stimulation and minimal risk.