Reliability and validity of the timed 360° turn test in people with multiple sclerosis. (3rd June 2021)

• Record Type: Journal Article
• Authors: Soke, Fatih; Guclu-Gunduz, Arzu; Ozkul, Cagla; Cekim, Kader; Irkec, Ceyla; Gonenli Kocer, Bilge
• Is Part Of: Physiotherapy theory and practice. Volume 37:Number 6(2021)
• Page Start: 736
• Page End: 747
• Publication Date: 2021-06-03
• Subjects: Multiple sclerosis -- outcome measures -- rehabilitation -- reliability -- validity; Physical therapy -- Periodicals; 615.82
• DOI: 10.1080/09593985.2019.1641867
• Languages: English
• ISSNs: 0959-3985

Abstract

ABSTRACT: Objectives : To investigate (1) the intrarater, interrater, and test–retest reliability of the timed 360° turn test in people with Multiple Sclerosis (MS); (2) the minimum detectable change in the timed 360° turn test times; (3) the concurrent and discriminant validity of the timed 360° turn test times; and (4) the cut-off times that best discriminate people with MS from healthy people and fallers from non-fallers with MS. Method : Sixty-one people with MS (Expanded Disability Status Scale, EDSS, 0–6.5) and 34 healthy people were recruited in this cross-sectional study. The timed 360° turn test was administered along with the Timed Up and Go Test, Berg Balance Scale, Four Square Step Test, and EDSS by two independent raters. Results : The timed 360° turn test showed good intrarater, interrater, and test–retest reliability. Minimal detectable changes were 1.49 s and 1.53 s for the dominant and non-dominant sides, respectively. The timed 360° turn test was strongly correlated with other outcome measures. Significant differences in 360° turn times were found between people with MS and healthy people and between fallers and non-fallers with MS ( p < .001 and p < .001, respectively). The cut-off times of 2.65 s on the dominant side and 2.42 s on the non-dominant best discriminated people with MS from healthy people, while 3.65 s on the dominant side and 3.75 s on the non-dominant best discriminated fallers from non-fallers with MS. Conclusions : The timed 360° turn test is a simple and reliable tool for assessing turning ability in MS.