Here is a video of Swedish body builder, Henrik Lindh, going in to get a Chiropractic adjustment to nearly every major joint in his body.
You can see how a chiropractor looks at the body as a whole and runs starts assessing the spine from the ground up by looking at the feet. Tight hips and pelvic rotation might be seen in a difference in leg lengths between the left and right leg. By manipulating the feet, ankles, knees, hips, lumbar spine, thoracic spine, cervical spine, shoulders, elbows, wrists and fingers the body receive a lot of new proprioceptive information. Proprioception is used by the brain and nervous system to create body awareness. Better proprioception equals better body awareness. Better body awareness equals better posture and movement patterns. Pain in the back tends to occur from our daily habits. Someone who does a lot of sport like this body builder would benefit from having a spinal alignment check monthly as he puts a lot of repetitive physical strain over his whole body. This is so he might avoid a sport injury like sciatica from a herniated disc or arthritis later in life. For more information about Chiropractic check out http://chiroclinic.co.za