The adolescents in this group who are involved in archery sports will be given 40 minutes of exercise training 2 days a week for 8 weeks. Exercise training will be applied as 5-10 minutes warm-up, 15-30 minutes trunk stabilization exercises, 5-10 minutes cooling down, and stretching exercises. The number of repetitions and difficulty levels of the exercises will gradually increase in the 3rd and 6th weeks.

McGill's tests will be used to examine participants' core endurance. These tests consist of four positions: the trunk anterior flexor test, the right and left lateral plank, and the trunk posterior extensor test. Participants will perform one practice trial that will last a few seconds to confirm position and then one actual test trial will be recorded per position where the maximum time (seconds) participants could hold a static position was measured. The same investigator visually will determine the end of all tests.

The test requires strength, flexibility, and proprioception. It is a measure of dynamic balance that provides a significant challenge to athletes and physically active individuals. The participant performing the test must maintain their balance on one leg while using the other leg to reach as far as possible in 8 different directions. The participant (standing on his/her left leg for example) must reach in 8 different positions, once in each of the following directions: anterior, anteromedial, medial, posteromedial, posterior, posterolateral, lateral and anterolateral. The anterior, posteromedial and posterolateral directions appear to be important to identify individuals with chronic ankle instability and athletes at greater risk of lower extremity injury.

It plans to use the free platform game (Reaction Time) available in the Android app. Test The test is performed using a tablet in a quiet and lighted room, the tablet will be placed on the desktop with a stabilizing stand.Athletes participating in the study will be asked to sit in a chair so that they are comfortable on the table.Test protocols after a verbal explanation, the athletes will be given one trial before the reaction time measurement. Stimuli given 5 times at fixed and random intervals, the average of the 5 trials results in the reaction time in milliseconds.

The participant is asked to touch the middle of the tablet screen with his finger when the blue color appears.When the green color appears, the screen continues to be touched, and when the green color appears, the screen is quickly stopped being touched. All athletes have a dominant and The non-dominant side uses the hands, index fingers.

Outdoor Shooting Performance: A total of 72 arrows, 2 x 36 arrows, will be shot at the distances specified by the International Archery Federation. The series were shot as 6 arrows each. A total of 360 points will be calculated. The higher the score, the better the performance of the athlete. Each athlete used his/her own bow and arrow, and the athlete must complete the shots within certain time limits.