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.
If you have wrist pain, some common causes include: Wrist Tendonitis. Tendonitis is a common problem that can cause wrist pain and swelling. Wrist tendonitis is due to inflammation of the tendon sheath. Treatment of wrist pain caused by tendonitis usually does not require surgery. Wrist Sprains. Wrist sprains are common injuries to the ligaments around the wrist joint.