Physical therapy programs to strengthen core muscle groups that support the low back, improve mobility and flexibility, and promote proper positioning and posture are often used in combinations with other interventions. (ninds.nih.gov)
Every obstacle you face out on the obstacle course will require well - trained core muscle groups. (blog.powersystems.com)
The plank is one of the best exercise for core conditioning — it engages all major core muscle groups, including the transverse abdominus, rectus abdominus, external obliques and glutes. (fitnessandpower.com)