Explain the role sports medicine plays in athletics today?

Sport medicine is the aspect of medicine that is concerned with physical fitness and taking care of injuries associated with sport and exercise. Sport medicine plays very important roles in athletics today. Sport medicine involves professional health providers such as doctors, different types of therapists and athletic trainers. These people work together to ensure that athletes are kept in top form. The roles they perform include:
1. Checking athletes medically to determine if they are fit for the kind of sport they want to get involved in
2.  Prescribing the right exercise regimen 
3. Management of athletes medical conditions
4. Rehabilitation of athletes after injury
5. Prescription of preventive strategies
6. Application on non-surgical methods for some type of injuries
Sport today, relies heavily on the services which sport medicine has to offer.

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.