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.
Tendonitis is a painful inflammation or irritation of a tendon, strong bands of tissue attaching muscles to bones. Tendonitis may be caused by an injury, or may develop over time through overuse. What causes tendonitis? Tendonitis is most often caused by repetitive, minor impact on the affected area, or from a sudden more serious injury. There are many activities that can cause tendonitis including: Gardening