Turkish translation and transcultural validity and reliability of an assessment tool for spasticity: Leg Activity Measure (Leg A)

Abstract

ABSTRACT Background The Leg Activity Measure is the only self-report measure that has been published to date that takes into account both the influence on quality of life and passive and active function in the literature. Aims The purpose is to examine the translation, cross-cultural adaptation validity and reliability of the Turkish version of the Leg Activity Measure (Tr-LegA). Methods Neurological patients (n = 52) with lower limb spasticity (aged 47.09 ± 14.74 years) were enrolled. The study consisted of two stages. At the first stage, the scale was translated into Turkish and culturally adapted. Validity and reliability analyses were conducted at the second stage. Construct validity was evaluated by exploratory factor analysis (EFA). The Rivermead Mobility Index (RMI), Nottingham Health Profile (NHP), and Functional Independence Measure (FIM) were used for convergent validity. The reproducibility (test-retest reliability) was assessed by the intraclass correlation coefficient (ICC). Furthermore, the standard error of measurement (SEM) was calculated. Results EFA suggested one factor for the Passive Function and two factors for the Active Function and Impact on Quality of Life Scales (QoL). Tr-LegA Passive and Active Function Scales were correlated with the total RMI, NHP, and FIM (p < 0.05). Tr-LegA Impact on Quality of Life Scale was correlated with the RMI and NHP (p < 0.05). Tr-LegA Passive Function Scale (ICC = 0.997), Tr-LegA Active Function Scale (ICC = 0.996), and Tr-LegA Impact on Quality of Life Scale (ICC = 0.976) had good reliability. Only Passive Function Scale had a significant floor effect (25%). Conclusions Tr-LegA is a valid and reliable multidimensional scale for passive and active function and quality of life in patients with lower limb spasticity. The clinical trial number NCT05182411.