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.
DeQuervainâs tendonitis or tenosynovitis, is a common condition affecting the function of many people. The syndrome is named after Fritz de Quervain, a Swiss physician who described the condition in the late 1800s. Symptoms arise when there is entrapment of the tendons of the thumb by their surrounding sheath at the wrist.