I think so, yes. Shoulders, mid section and hips go together.
The glutes will help with hip tilt. With good hip tilt your abs, obliques and lower back (core) will actually be in a position where they can work properly and get stronger. Stronger core will help your hips be more level. This should go right up the chain, helping your posture/shoulders from the bottom up.
Rounded shoulders and slumped posture kind of make you lean forward. If you can learn to squeeze your upper back and control your scaps it should unround your shoulders. This should help your posture, and help your hip situation from the top down.
This lady has good hip tilt, good upper back posture and good shoulder mobility.
This lady has poor shoulder/upper back mobility or stability and you can see how she cheats, tilting her hips in APT to try to make up for whack posture.
With whack bracing, extended abs and APT the upper back and neck can get into extended, vulnerable positions. With everything working together, the body is stronger and safer.
You can figure this stuff out alone, but a good PT should be able to get you on the right track, right away. Like skipping the trial and error. Anatomy and kinesiology are a lot to take on.
Once you’re moving better, a trainer can make sure you’re lifting right. Getting stronger with good posture will help ingrain what the PT showed you.
Following the advice and videos provided by @FlatsFarmer I managed to go along way towards correcting the same issues. I’ve slacked off and can see the bad habits are creeping back but it is an issue you can improve, you have to be extremly consistant with them.
I was doing most of them daily, especially the stretches. Strenghtening exercises more like every other day. Seeing as though most of the exercises you can do on your living room floor it’s easy to do them whilst watching tv etc.
A combination of exercise plus a consious effort to stay in better posture and you will see improvement.
I agree with what kd has said. You can get started with some easy stuff like cuban rotations for upper back and clam shells for your glutes and see some temporary changes really quick.
When you’re just getting started you can do easy, small moves daily or twice a day even.
From there you gotta not slack. And sometimes find more challenging moves because the easiest stuff can stop being effective after awhile.
And then be careful to lift weights correctly so you don’t lift yourself back into bad alignment.
