aim: This test measures upper body strength and power, by throwing a Power Ball for maximum distance.
equipment required: 2 or 3 kg power ball, tape measure, foam pad for kneeling on, clear open area for testing.
weights: males use 3 kg, females 2 kg, and all youth the 2 kg power ball.
procedure: The athlete starts by kneeling with the back erect, facing the direction they are going to throw. The thighs should be parallel and the knees at the start line. Starting with the ball grasped with both hands at the sides, and held out in front of the body. The ball is brought back over the head, then in one motion the ball is pushed forward and up (optimally at about 45 degrees). Several practices may be required to get the best trajectory for maximum distance. You must not throw favoring one
arm or rotate about the
spine. The athlete is permitted to fall forward over the line after the ball is released. The knees are not to leave the ground, or the toes used to gain extra traction. Three attempts are allowed. (see Powerball Video Examples)
scoring: The measurement is recorded in feet and inches to the nearest
inch, measuring from the outer edge of the launch line to
the central point where the Power Ball first lands. The best result of three throws is recorded.
target population: sports in which upper body body power
is important, such as Volleyball.
advantages: this test is easy and quick to perform for an individual, with the equipment required relatively cheap.
disadvantages: several people are needed to conduct this test smoothly: one to mark results, another to check technique and another to collect and return the balls. If testing a large group of subjects, it can be time consuming to put all of them through this test.
comments: The angle the ball is thrown is important. You may want to explain to the subject about the optimal angle for maximal distance, and to allow some practice attempts.