Relıabılıty and valıdıty of the supıne-to-stand Test wıth Multiple Sclerosis

Background: Supine-to-Stand Test (SST) requires muscle strength, flexibility, and dynamic balance and can be used as a marker of functional motor competence in patients with Multiple Sclerosis (pwMS). Objectives: To investigate the reliability and validity of SST in pwMS. Methods: Muscle strength was measured using digital goniometer for plantar and dorsiflexor in pwMS (n=44). Manual dexterity was assessed through the 9-hole Peg Test (9HPT). Balance was evaluated using with Berg Balance Test (BBT). Walking speed was assessed using Six-minute Walk test (6MWT). Timed up and go test (TUG), Activity-spesific Balance Confidence scale was used for fear of falling. Quality of life was assessed with MSQOL-54. Results: The test's intraclass correlation was 0.984 (95% CI 0.801-0.995). Significant moderate correlations were found between SST and BBT (r=-0.547, p=0.001), TUG (r=0.619, p\0.05). Additionally, no significant correlation was found between SST and bilaterally 9HPT, MSQOL-54 (p\>0.05). Conclusion: This study establishes SST as a reliable and valid tool for assessing functional motor competence in pwMS.