Sports activities are a regular way of life for many of us, and involve people from all walks of life and ages, from those who have an avid interest to those who just want to keep fit; from the elite professional to the casual participant.
Waist turning in golf
Many sports injuries are the result of overuse (repetitive strain) ie. Playing too hard and too often eg. Golfer's elbow and Tennis elbow, or it can occur via sudden high activity after a period of no exercise (The "Weekend Warrior")
The good news is that although sports injuries are common, those who are fit tend to recover more quickly and easily from their injuries.