Reliability and Validity of Athletes Disability Index Questionnaire

Objective: The purpose of this study was to evaluate validity and reliability of a new proposed questionnaire for assessment of functional disability in athletes with low back pain (LBP). Design: Validity and reliability study. Setting: Elite athletes participating in different fields of sports. Participants: Participants were 165 male and female athletes (between 12 and 50 years old) with LBP. Interventions: Athlete Disability Index (ADI) Questionnaire which is developed by the authors for assessing LBP-related disability in athletes, Oswestry Disability Index (ODI), and the Roland-Morris Disability Questionnaire (RDQ). Main Outcome Measures: Self-reported responses were collected regarding LBP-related disability through ADI, ODI, and RDQ. Results: The test–retest reliability was strong, and intraclass correlation value ranged between 0.74 and 0.94. The Cronbach alpha coefficient value of 0.91 (P

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