Investigation of the Relationship Between Core Stability and Reaction Time, Hand-Eye Coordination, Pain, and Functional Status in Individuals With Rotator Cuff Lesions

Test will be applied to assess the endurance of the core muscles. The subjects are positioned in the prone position. The subjects are asked to extend their upper body straight forward from the edge of the table. How long the patient was able to perform the test was recorded in seconds.

Test will be applied to assess the endurance of the core muscles. Participants will be positioned with trunk flexed to 60º, knees and hips to 90º flexion. The evaluator fixes the feet on the ground by supporting them from the toes. When the 60º trunk flexion is broken, the test will be terminated. How long the patient was able to perform the test was recorded in seconds.

Test will be applied to assess the endurance of the core muscles. The subjects were asked to lie on their side, raise their bodies on their forearms and toes and maintain this position(both sides). How long the patient was able to perform the test was recorded in seconds.

Test will be applied to assess the endurance of the core muscles. The subjects put their elbows on the ground as the starting position and open their feet about the width of their hips while keeping their body straight. The tests end when the subjects break the test positions. How long the patient was able to perform the test was recorded in seconds.

Test will be applied to assess the strength of the core muscles. The subjects are positioned in the prone position with their hands shoulder-width apart and elbows and knees flexed. The subjects were asked to raise their body up by extending their elbows. The number of times the patient repeats the movement in 30 seconds is recorded.

Test will be applied to assess the strength of the core muscles. The subjects are asked to flex the trunk while the knees are flexed in the supine position. During the test, the feet of subjects are stabilized. The number of times the patient repeats the movement in 30 seconds is recorded.

In this study, the BlazePod system will be used to measure reaction time. BlazePod is a mobile application-supported system that records response time to visual stimuli with millisecond precision through LED light pods. Prior to the assessment, a pre-test will be conducted to allow participants to adapt to the evaluation process. The right and left sides will be assessed separately. During a 30-second period, the number of extinguished LEDs, the average time to deactivate each LED (in milliseconds), and the number of missed LEDs-defined as those that automatically turn off after the designated waiting period-will be recorded.

Hand-eye coordination will be assessed using the Hand-Wall Toss Test. During the test, participants will be instructed to stand 2 meters away from the wall and throw a tennis ball at the wall with their right hand, catching it with their left hand, and then alternate hands, continuing this sequence for 30 seconds. The total number of successful wall tosses and catches performed without dropping the ball will be recorded.

It is used to assess the severity of pain. Pain severity with Visual Analogue Scale,(0-10) higher scores indicate more pain.

Shoulder function will be assessed using the Shoulder Pain and Disability Index (SPADI). The SPADI consists of two sections-pain and disability-with a total of 13 items. Each item is scored on a scale from 0 to 10, and the results are calculated as a percentage. The total score ranges from 0 to 100, with higher scores indicating worse shoulder functional status.