Ok this is my first post so i'll make it a longer one :-). As i have some problems with my lower back(spine) and whole spine in general some time ago i started working out more and stretching. By the way i am 25, so i am still rather young :-). Also all my life i've been in sports, swiming,tennis but mostly football(soccer in usa :-) ). So soccer playing might made some problems in my lower back/pelivs area because you mostly use that part of body running, passing and shoting with legs.
So here is the deal, i read a lot on the net about training muscles and similar stuff, learned a lot about muscles in body especially in that pelvis area. I read about posture problems and similar stuff, so i found on this link http://www.exrx.net/ExInfo/Posture.html aobut common postural deficencies, so i defined myself as Posterior Pelvic Tilt and stuff that goes with it, kyphosis etc. And i started doing exercies in gym (weights) and also at home for my back, deadlifts... I did what it says on this page, worked hamstrings and gluetas stretched back but didn't get result i was aiming at, it semed that what it did is pull my pelvis back and spine with it and all in all my posture somewhat was even more kyphotic i would say.
There is some more info, when i got my x-ray of spine before, my lumbar spine is excessively hyperextended. Also my belly was/is proturding but it got more like that since i started regulary going to the gym and doing stretching. I was told by some fisiotherapist when i aske about this and illiopsoas that this muscle is pulling my lumbar spine so that's why it's flexed. So ok i figured, my quadriceps r short, illiopsoas is also and that's the problem, so i have to stretch it. I did stretches of both for some time, combined with those hamstring/gluteus exercises, thinking that should defenitly help, but it didn't. What it seemed to me is that my back was rounder when i sat. longer and my posture was worse. I also did masages of my back and manual stretching of back muscles done by phisio. but as i said it all looked to me that my hamstrings were pulling more and my gluetus maximus also and it just didn't felt good. So i started thinking, this must be wrong, maybe my illopsoas is tight beacuse my gluteus are strong(they are, i have big butt :-) ) and that's why my belly is proturding because illopsoas is antagonist of glut. maximus right? so when i stretched illopsoas i really just helped my gluteus shorten. I read that you can stretch muscle to 1.6 of his original lenght, so if i use my logic, when you stretch agonist muscles his antagonist could shorten beacuse there isn't much force against it (mast and ship theory). Also if antagonist is stronger then agonist then there is imbalance right? So i can see that my glut.max is big and strong but i cannot see my illopsoas and messure imballance, but i could assume that my gluteus is stronger and causing problems. But i cannot be sure, i wouldn't like to work my psoas and make even more problems, but then again i did lot's of stretching of it and when i did it never seemed right, it even hurt sometimes when i was sitting or when my phisio. palpated it and then help me stretch it.
So most i could get from my doctors chiros or phisio was, work your abs, work your back, stretch but nothing specific, i could do all that but it seems i could never get it right, i would like to work on my week links, to get my body in perfect shape, perfect balance as it can be and then work all muscles to maintian it as long as i can but i fail to get it.
So it seems i should work quadriceps and psoas, to counter balance hams and gluteus, but my quad also seem rather strong, so i really don't know what is the problem in the end :-). How could i know it for sure? Maybe i should work lower back, multifidus muscles to counter psoas that is pulling my lower back, but then again it would still pull if gluteus is too strong, a lot of dilema for me :-).
So if someone did have nerv to read all this, to understand it and maybe give some advice on this lower back/pelvis chain problem i would really apriciate it.