Who should you see for sports injuries and exercise plans?

All sportsmen, whether professionl or amateur, are bound to suffer from injuries that require rehabilitation, like retired badminton player Lee Chong Wei in this filepic.

We may be the heaviest nation on this side of the world, preferring to warm our derrieres instead of putting them to work, but there exists a minority who partake in sporting activities for leisure and pleasure.

When this group gets musculoskeletal injuries or problems, which specialist do they consult?