If you have lower back pain, instead of working on your abs (or rather than just working on your abs) something you should consider is working on your hip joints, with standing hip exercises while balancing on one foot.
The Easy Standing Hip Flexor Stretch - Pilates Tonic Chattanooga
14 Hip Exercises: For Strengthening and Increasing Mobility
Standing hip rotation - Thrive Now Physiotherapy
Hip Flexor Strengthening Exercises for STRONG Hips - Vive Health
Hip Strengthening Exercises
Advanced Standing Exercises, Hip Replacement
Beginner Standing Hip Exercises For Seniors — More Life Health
Standing Sway Exercises to Improve Balance
6 Best Hip Flexor Exercises With Bands (+Sample Workout)
8 Easy Hip Flexor Stretches That Your Can Do Anywhere
Increase Mobility & Strength - Beginner Hip Exercises for Seniors
Standing Hip Abduction - Video Guide
Standing Hip Extension with Theraband
The 3 Best Hip Stretches To Improve Hip Mobility
Hip Strengthening Exercises For Seniors
