There is sufficient literature to back up the fact that core strengthening exercises have a positive impact in the improvement back pain severity scores.
Core muscles of the body include the abdominal wall muscles, back muscles, the pelvic floor muscles and the diaphragm. They are important in maintaining the stability of the spine and exercising your core muscles is a very important aspect of spine rehabilitation programs and also for preventive back programs.
Major core muscles include
Pelvic floor muscles
Transversus abdominis
Multifidus
Internal and External obliques
Rectus abdominis
Erector spinae
Diaphragm
Minor core muscles include
Lattismus Dorsi
Gluteus maximus
Trapezius
Advantages of swimming
Complete all over body work up
Builds endurance, tones up muscles and improves their strength
Helps maintaining a healthy weight and improve cardiovascular fitness