Hip raise is one the better effective exercise that I usually recommend to my client that they have lower back pain or muscle imbalance in their pelvic. this work out will target your glutes muscle group, lower back erector group, core muscle like hip flexors and hamstring group. Hip raise can also help with pelvic instability by using the stability muscle that will get activated while you are raising your hip.
How to do it: Lie on your back on the floor, bent your knee and have them slightly a part. Make sure your feet are in complete contact on the floor. Breath out when you raise your hip and pause for a few seconds, then lower you hip back to neutral position. repeat 6-8 time and 2-3 sets. if you are having a lower back issue this work out should become as your daily activity routine so you can have a result in time.