Core work should include hanging leg raises (to strengthen weak hip flexors) and dumbbell pullovers. (completehumanperformance.com)
Also, it should be an obligatory move for people who have weak hip mobility and flexibility — the sumo deadlift is one of the best exercises you can do to develop your hips and entire posterior chain and improve your overall performance. (fitnessandpower.com)
Having shortened or weak hip rotators contributes to abnormal lumbopelvic posture which translates into potentially destructive excess motion in the lumbar spine. (onnit.com)