What are the effects of exercise on musculoskeletal system?

That depends on the exerise or sport. For example, if you run a lot you may get bad knees from the pressure of you running. Running is a high impact exercise. If you swim it doesn't affect your skeletal system as much. You may be sore in the morning if you swim a long way but that will be your muscles growing. Swimming is a low impact sport and so is cycling.

Tennis is bad for both the skeletal and the muscular system because if you play tennis regularly you may get tennis elbow and you get bad knees from running quickly then stopping suddenly. This is why most tennis players have bad joints when they are older.

Running and tennis are the sports most likely to give you Arthritis in your ankles, knees and possibly your shoulders. So, a low impact sport is good. Swimming 100m is the equivalent of running 400m. So, if you want to have good joints swimming is the way to go.

For in-depth information about all the benefits of exercise, see the page link, further down this page, listed under Related Questions.