Core muscle endurance was evaluated with extensor muscle endurance test, flexor muscle endurance test and lateral muscle endurance test.

Hand Grip Strength was evaluated with Jamar hand dynamometer. Upper extremity functional performance was evaluated with health ball throwing test.

Reaction time was evaluated with Fitlight Trainer. Agility performance was evaluated with Pro-agility test. Cardiovascular endurance was evaluated with the 3-minute step test.

Four different tests were used to evaluate core stabilization. Sorensen test was performed for extensor muscle endurance. For the Sorensen test, young athletes were laid supine in a fixed bed of 76 cm height and 61 cm width; and asked to extend their body over the pelvis and keep the position as long as they could. Core flexor muscle endurance was measured in the position of body flexion of 60°, and knee and hip flexion of 90° and athletes were asked to keep the position as long as possible. To evaluate the general core muscle power, young athletes were asked to lie prone and lift their body on forearm and toes and keep the position as long as possible. For the lateral core muscle endurance athletes were asked to get into left and right decubitus position respectively and lift their body on forearm and toes and keep the position as long as possible. All tests were performed by a chronometer and test was terminated as the position was lost and the time passed was recorded

Hand grip strength was measured by Jamar hand dynamometer. Measurement was taken three times for both right and left sides while the subject was sitting on a chair, shoulder in adduction and elbow at 90 degree flexion. Twenty seconds of rest was given between the two measurements. Mean value of three results were calculated and recorded as kPa

Health ball throwing test was used to evaluate upper extremity open kinetic chain and explosive power. Subjects were told to hold the 3 kg health ball and throw it horizontally to the furthest possible point using two hands. The distance between the starting point and the first contact point on the floor was recorded as centimeters. Test was repeated three times and mean values were recorded.

Reaction time and dynamic postural control was evaluated with ''Fitlight TrainerTM'' (Fitlight Trainer Corporation, Thensvej, Risskov, Denmark). Athletes were asked to turn out the LED lights placed on the wall that were randomly turned on and the total number of the LED lights they turned off and their reaction time were noted as seconds