Turkish Journal of Geriatrics 2025 , Vol 28, Issue 2
CROSS-CULTURAL ADAPTATION AND VALIDATION OF THE TURKISH VERSION OF THE 25-QUESTION GERIATRIC LOCOMOTIVE FUNCTION SCALE
Barış GÜRPINAR1, Hülya TUNA2, Nursen İLÇİN2
1Izmir University of Economics , Physiotherapy and Rehabilitation, İzmir, Turkey
2Dokuz Eylül University, Faculty of Physical Therapy and Rehabilitation , İzmir, Turkey
DOI : 10.29400/tjgeri.2025.440 Introduction: Locomotive syndrome, characterized by gait disorders, loss of balance, and cognitive difficulties, significantly impacts older adults by increasing morbidity and reducing independence. This study aimed to adapt the 25-item Geriatric Locomotive Function Scale into Turkish and evaluate its validity and reliability.

Materials and Method: The translation process involved forward and backward translations by bilingual experts to ensure linguistic and conceptual equivalence with the original scale. A total of 250 individuals aged ?65 years participated, completing the Turkish version of the scale alongside functional mobility tests; the timed up-and-go, five repetitions of sit-to-stand, two-step, and standing tests. Participants repeated the scale 1 week after the initial evaluation to assess the test?retest reliability.

Results: The internal consistency of the Turkish version was excellent (Cronbach"s alpha = 0.952). Test?retest reliability, assessed 1 week apart, yielded an intraclass correlation coefficient of 0.974, indicating excellent reliability. Concurrent validity was examined by correlating scale scores with functional test results. Significant correlations were observed (p < 0.001), with Pearson"s correlation coefficients of 0.472 for timed up-and-go, 0.504 for five repetitions of sit-to-stand, -0.871 for the two-step test, and -0.518 for the standing test. These findings demonstrate that the Turkish version is a valid and reliable tool for assessing mobility impairment and functional limitation in older adults.

Conclusion: The adaptation and validation of the 25-item Geriatric Locomotive Function Scale into Turkish provide a comprehensive measure for evaluating and monitoring locomotor function, supporting early detection and intervention in this population. Keywords : Geriatric Assessment; Locomotion; Aged