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.
Rotator cuff or biceps tendonitis. A shoulder disorder characterized by the inflammation of the shoulder capsule and related tendons. DeQuervain's tenosynovitis. The most common type of tenosynovitis disorder characterized by the tendon sheath swelling in the tendons of the thumb. Trigger finger/trigger thumb. A tenosynovitis condition in which the tendon sheath becomes inflamed and thickened, thus preventing the smooth extension or flexion of the finger/thumb.