Pain, Muscle Strength, Motor Imagery, Body Awareness on Function and Individuals With Chronic Lateral Epicondylitis

Fuction will be evaluated with Patient-Rated Tennis Elbow Evaluation. The Patient-Rated Tennis Elbow Evaluation (PRTEE), is a 15-item questionnaire designed to measure forearm pain and disability in patients with lateral epicondylitis. The PRTEE allows patients to rate their levels of tennis elbow pain and disability from 0 to 10, and consists of 2 subscales:

Pain subscale - 5 items (0 = no pain, 10 = worst imaginable) Function subscale (0 = no difficulty, 10 = unable to do) Specific activities - 6 items Usual activities - 4 items

The rest, activity and night pains of the participants will be evaluated with a 10 cm Visual Analog Scale before the treatment and at the end of the 4-week application. "0" means no pain, "10" means excruciating pain. Results will be recorded in cm.

Motor imagery will be assessed through a left/right judgment task in which participants will need to recognize whether hand images correspond to their left or right side using the Recognise™ application (Neuro Orthopaedic Institute, Adelaide, Australia). For this test, participants will be seated comfortably in front of a table, with both elbows flexed at 90◦ and both index fingers placed on the bottom of the screen of an electronic tablet. Forty images of hands (20 on each side) in multiple postures, angles and skin colors will be randomly displayed in the center of the screen of the device. Participants will be given standard instructions to decide as quickly and accurately as possible whether each image is of the right or left hand by clicking on the 'left' (with left fingers) or 'right' (with right fingers) buttons shown at the bottom of the screen.

The maximal grip strength of the patients will be measured with a hydraulic hand dynamometer.

The Body Awareness Questionnaire will be used to assess body awareness. The questionnaire consists of 18 questions. Participants will be asked to score each statement on a scale ranging from 1 (1: Not true at all) to 7 (7: Completely true) and the total score will be obtained by summing the score given for each statement.