Many exercisers—and fitness trainers—obsess over “strict” form during resistance training. The problem with that is disagreement over what constitutes proper form. And not everyone keeps up with the latest research. Proper squat technique, for example. Review the brief discussion at the link here for one view of the differing weight-bearing squat variations.
Exercise is medicine. And relief for certain ailments can come from unusual, seemingly unconnected exercise movements. However, the back—especially the lower back—is part of the body’s core. It is often neglected as part of core conditioning, though. Visit this link for a review of exercise movements which strengthen the back and, ultimately, the core.