Romatoid Artritli Bireylerde Hareket İmgeleme Anketi-3 ve Kinestetik ve Görsel İmgelemeAnketi-20'nin Psikometrik Özelliklerinin Araştırılması

Abstract

Ozan Buyuksimsek, G., Investigation of the Psychometric Properties of the Movement Imagery Questionnaire-3 and the Kinesthetic and Visual Imagery Questionnaire-20 in Individuals with Rheumatoid Arthritis, Hacettepe University, Graduate School of Health Sciences, Rheumatological Physiotherapy and Rehabilitation Program, Master of Science Thesis, Ankara, 2026. The primary aim of this study was to examine the validity and reliability of the Turkish versions of the Movement Imagery Questionnaire-3 (MIQ-3) and the Kinesthetic and Visual Imagery Questionnaire-20 (KVIQ-20) in individuals with rheumatoid arthritis. The secondary aim was to examine the motor imagery skills of individuals with rheumatoid arthritis. A total of 149 individuals were included in the study, consisting of individuals with rheumatoid arthritis (n = 109) aged between 20 and 65 years and healthy individuals (n = 40) aged between 22 and 65 years. Test-retest reliability (ICC), internal consistency (Cronbach's alpha), Bland-Altman analysis, and construct validity were evaluated. In addition, known-groups/discriminant validity and convergent-discriminant validity with selected clinical, psychosocial, and cognitive measures were examined using Spearman correlations. The test-retest reliability of the MIQ-3 was ICC = 0.809 and its internal consistency was Cronbach's alpha = 0.930, with factor analyses supporting a single-factor structure. ROC analysis showed that the MIQ-3 had low discriminative performance that did not reach statistical significance (AUC = 0.604; p = 0.053). The KVIQ-20 total and subscale scores exhibited high reliability (Cronbach's alpha = 0.938-0.965; ICC = 0.753-0.912), and confirmatory factor analysis indicated a good fit for a two-factor structure. ROC analysis revealed that the KVIQ-20 total and subscale scores showed statistically significant discriminative performance between the healthy and clinical groups (AUC = 0.644-0.768). In the known-groups analysis, the KVIQ-20 total and subscale scores significantly distinguished healthy individuals from individuals with rheumatoid arthritis (p ≤ 0.007), whereas the MIQ-3 total score did not reach significance in this distinction (p = 0.052). A high degree of convergent association was found between the MIQ-3 and KVIQ-20 (rs = 0.750; p < 0.001). According to the Kruskal-Wallis test results, no significant differences were found among individuals with rheumatoid arthritis in terms of MIQ-3 total score and KVIQ-20 total, visual, and kinesthetic subscale scores (p > 0.05). In conclusion, the Turkish versions of the MIQ-3 and KVIQ-20 are reliable measurement tools in individuals with rheumatoid arthritis; with stronger validity evidence for the KVIQ-20, the MIQ-3 assesses motor imagery at a global level, whereas the KVIQ-20 evaluates it together with its visual and kinesthetic subscales.