{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,25]],"date-time":"2026-08-25T03:20:19Z","timestamp":1787628019470,"version":"build-2736575974"},"reference-count":42,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T00:00:00Z","timestamp":1781049600000},"content-version":"vor","delay-in-days":9,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2026,6,1]],"date-time":"2026-06-01T00:00:00Z","timestamp":1780272000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/doi.wiley.com\/10.1002\/tdm_license_1.1"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Brain and Behavior"],"published-print":{"date-parts":[[2026,6]]},"abstract":"<jats:title>ABSTRACT<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>The Exercise\u2010Specific Parkinson's Disease Questionnaire (PDQ\u2010Exercise) is the first patient\u2010reported outcome measure to assess exercise\u2010related challenges in people with Parkinson's disease (pwPD). The aim was to translate and culturally adapt the PDQ\u2010Exercise into Turkish and to evaluate its psychometric properties in pwPD, including structural and construct validity assessed through predefined hypotheses regarding expected relationships with related measures, internal consistency, test\u2013retest reliability, measurement error, and floor\/ceiling effects.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>This cross\u2010cultural adaptation and psychometric validation study involved translating, culturally adapting, and evaluating the psychometric properties of PDQ\u2010Exercise into Turkish. Seventy pwPD were recruited. Structural validity was examined using confirmatory factor analysis (CFA). Construct validity was assessed through correlations with clinical, participation, and quality of life measures. Reliability was assessed through evaluations of internal consistency (Cronbach's alpha and McDonald's omega) and test\u2013retest reliability (ICC) with standard error of measurement (SEM), minimal detectable difference (MDD), and Bland\u2013Altman analysis.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>The initial CFA model demonstrated poor fit to the data. Following theoretically and statistically justified modifications, including the addition of correlated residuals between selected items, model fit improved substantially. The final model showed good fit indices (CFI = 0.991, TLI = 0.981, SRMR = 0.051), although the RMSEA confidence interval indicated some uncertainty (RMSEA = 0.051, 90% CI: 0.00\u20130.145). Construct validity was supported by moderate correlations between PDQ\u2010Exercise and Movement Disorder Society Unified Parkinson's Disease Rating Scale (\u03c1 = 0.545), Oxford Participation and Activities Questionnaire (\u03c1 = 0.514), and Parkinson's Disease Questionnaire\u20108 (\u03c1 = 0.494). PDQ\u2010Exercise demonstrated acceptable internal consistency (Cronbach's alpha = 0.783 and McDonald's omega = 0.788) and excellent test\u2013retest reliability (ICC = 0.985, SEM = 2.6; and MDD = 7.2). The Turkish version of the PDQ\u2010Exercise exhibited a significant floor effect. 28.6% of participants scored the minimum score (0) on the total scale.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>The Turkish version of the PDQ\u2010Exercise demonstrated acceptable psychometric properties in a sample predominantly consisting of individuals with early\u2010stage PD.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1002\/brb3.71447","type":"journal-article","created":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T07:59:00Z","timestamp":1781078340000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Cross\u2010Cultural Adaptation and Psychometric Evaluation of the Turkish Version of the Exercise\u2010Specific Parkinson's Disease Questionnaire"],"prefix":"10.1002","volume":"16","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9479-4435","authenticated-orcid":false,"given":"Melis","family":"Yal\u00e7\u0131n","sequence":"first","affiliation":[{"name":"Graduate School of Health Sciences Dokuz Eylul University  Izmir T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8776-0664","authenticated-orcid":false,"given":"Turhan","family":"Kahraman","sequence":"additional","affiliation":[{"name":"Department of Physiotherapy and Rehabilitation, Faculty of Health Sciences Izmir Katip Celebi University  Izmir T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5143-236X","authenticated-orcid":false,"given":"Berril","family":"D\u00f6nmez \u00c7olako\u011flu","sequence":"additional","affiliation":[{"name":"Department of Neurology Faculty of Medicine Dokuz Eyl\u00fcl University  Izmir T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9481-6083","authenticated-orcid":false,"given":"Arzu","family":"Gen\u00e7","sequence":"additional","affiliation":[{"name":"Faculty of Physical Therapy and Rehabilitation Dokuz Eyl\u00fcl University  Izmir T\u00fcrkiye"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2026,6,10]]},"reference":[{"key":"e_1_2_13_2_1","doi-asserted-by":"publisher","DOI":"10.1002\/mdc3.12556"},{"key":"e_1_2_13_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.tjem.2018.08.001"},{"key":"e_1_2_13_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/ene.14108"},{"key":"e_1_2_13_5_1","doi-asserted-by":"publisher","DOI":"10.1002\/sim.1108"},{"key":"e_1_2_13_6_1","doi-asserted-by":"publisher","DOI":"10.4324\/9780203498187"},{"key":"e_1_2_13_7_1","doi-asserted-by":"publisher","DOI":"10.2466\/pms.1996.82.3c.1139"},{"key":"e_1_2_13_8_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0314058"},{"key":"e_1_2_13_9_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00415\u2010025\u201013348\u2010x"},{"key":"e_1_2_13_10_1","first-page":"65","volume-title":"Individualized Care: Theory, Measurement, Research and Practice","author":"Efstathiou G.","year":"2018"},{"key":"e_1_2_13_11_1","doi-asserted-by":"publisher","DOI":"10.1055\/s\u20100041\u20101725133"},{"key":"e_1_2_13_12_1","doi-asserted-by":"publisher","DOI":"10.3758\/bf03193146"},{"key":"e_1_2_13_13_1","doi-asserted-by":"publisher","DOI":"10.1192\/bja.2020.33"},{"key":"e_1_2_13_14_1","doi-asserted-by":"publisher","DOI":"10.1002\/mds.20213"},{"issue":"11","key":"e_1_2_13_15_1","first-page":"679","article-title":"Parkinson Disease","volume":"102","author":"Halli\u2010Tierney A. 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