The value of the vertical jump is that it show's a player's ability to burst off the line of scrimmage with lower body strength. That's why the drill is important for linebackers and defensive linemen despite the fact that they, in theory, are not jumping around much trying to defend passes.
Wrist tendonitis, also called tenosynovitis, is a common condition characterized by irritation and inflammation of the tendons around the wrist joint. Many tendons surround the wrist joint. Wrist tendonitis usually affects one of the tendons, but it may also involve two or more.
So if your doctor told you you have Arm Tendonitis, we need to look a little closer. If you have pain in your wrist and/or forearm, you possibly have Wrist Tendonitis or Tennis Elbow (or Golfer's Elbow). If you have pain in your inner elbow and/or biceps area, then you likely have Biceps Tendonitis.