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IntroductionThe Lindop Parkinson's Disease Mobility Assessment (LPA) is a Parkinson's disease (PD)-specific clinical scale. The LPA was designed to assess core functional mobility in rehabilitation, including gait and bed mobility. This study aimed to develop a Japanese version of the LPA and evaluate its validity and reliability in PD.MethodsSixty-two people with PD participated in the validation analyses. The Japanese version of the LPA was developed through a standardized translation and cross-cultural adaptation process. Construct validity was examined using Spearman's rank correlations between LPA scores and relevant clinical measures. Internal consistency was assessed using Cronbach's alpha. Inter-rater reliability for video-based assessments was evaluated using intraclass correlation coefficients (ICCs) and quadratic weighted kappa coefficients.ResultsThe total LPA score showed very strong correlations with the axial subscore, MDS-UPDRS Part 3, bradykinesia subscore, and Berg Balance Scale (Spearman's rho = - 0.83, - 0.74, - 0.70, and 0.75, respectively; all FDR-adjusted p ConclusionThe Japanese version of the LPA demonstrated good construct validity and excellent internal consistency and inter-rater reliability for the total score in assessing gait and bed mobility in PD. Further studies are needed to examine its responsiveness and applicability among individuals with more advanced functional impairment.
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