Study group will be examined for outcome measurements.

Control group will be examined for outcome measurements.

ACL-RSI scale evaluates psychological readiness to return to sports participation after ACL reconstruction and has items related to fear of reinjury/accidental injury during sport activities.

The scale contains 12 questions and each question is scored from 0 to 100 in 10-point increments according to the visual analog scale. The scale score is calculated by adding the scores from all 12 questions and dividing by 12. A high score on the scale indicates a positive psychological response.

Metrics will be measured with Shimmer 3 GSR Development and Consensys GSR Development Kit. Low Frequency (LF), High Frequency (HF), Low Frequency to High Frequency ratio (LF/HF), root mean square of successive differences (RMMSD) will be measured from participants while watching stress evoking videos. Metrics will be measured according to the Task Force guidelines in 1996. RMSSD reflects the integrity of vagus nerve-mediated autonomic control of the heart, HF reflects parasympathetic activity, and LF is proportional to sympathetic activity but influenced by parasympathetic tone. LF/HF reflects sympathetic activity dominancy over parasympathetic activity.

Metrics will be measured with Shimmer 3 GSR Development and Consensys GSR Development Kit. Skin conductance response (SCR) will be measured from participants while watching stress evoking videos. SCR is the measurement of the electrical conductivity of the skin and represents the activation of sweat glands in response to a particular stressor stimuli.

Participants will be tested for their landing with a standardized jump-landing from a box task. Subjects will jump down from the box and land on the ground and then immediately jump vertically upward as high as possible. We will rate for every participant by observing in both the sagittal and the frontal plane of jump- landing technique while the subject was in contact with the ground after landing from the box.

Scoring will be made as "No" (0 points) and "Yes" (1 point) for Items 1-15. For Item16, it will be evaluated as "Excellent" (0 points), "Average" (1 point) and "Hard" (2 points). For item 17, "Excellent" (0 points), "Average" (1 point) and "Bad" (2 points). The total score of 17 items will be evaluated. The higher the score obtained from the test result, the worse the jump landing. LESS scores will be interpreted in four different categories: excellent (LESS score <4), good (4<LESS score ≤5), moderate (5<LESS score ≤6), and poor (LESS score >6).