Just want to do a check on form/technique.
I’ve incorporated heavier good mornings into my routine (along with stiff leg deads and pullthroughs). My back tends to be my weak point and my primary goal over the next while is to get it stronger.
I am struggling to do 3 reps of GM at 150lbs but I can go do stiff leg deads with multiple sets of 6-8 reps at 225 comfortably.
I’m thinking it is related to technique or maybe I should stick with the GM’s at a lower weight and build up to it. Here’s what I believe is proper GM form (taken mostly from t-Mag article):
To do good mornings, approach a loaded Olympic bar as if you were going to do a conventional squat (feet shoulder-width apart, bar resting on the traps). Now, instead of squatting down, bend forward at the waist as far as you can. Push the glutes back. Keep the knees slightly bent. Do the movement slowly and deliberately. Concentrate on the hamstrings. Try to actually flex your glutes, as this will help focus the stress away from the spinal erectors.Keep your head up and maintain a slight upward arch in the back.
It seems there are numerous forms of good mornings Arched-Back, Rounded back, GM/Squat combo, etc.
How far over should I be bending if trying to go heavy? 30deg? 45deg? 90deg? To build lower back strength should I be doing something else? When I see people say their GM is 60% of their Squat is that bent at 90deg? That would seem very tough to me.