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.
De Quervain's tenosynovitis (also called de Quervainâs disease or de Quervainâs syndrome) is a painful inflammation of tendons in the thumb that extend to the wrist. The swollen tendons rub against the narrow tunnel they pass through. That causes pain at the base of the thumb and into the lower arm.