Reliability and validity of the timed 360° turn test in people with multiple sclerosis


Soke F., Guclu-Gunduz A., ÖZKUL Ç., Cekim K., Irkec C. , Gonenli Kocer B.

Physiotherapy Theory and Practice, vol.37, no.6, pp.736-747, 2021 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 37 Issue: 6
  • Publication Date: 2021
  • Doi Number: 10.1080/09593985.2019.1641867
  • Title of Journal : Physiotherapy Theory and Practice
  • Page Numbers: pp.736-747
  • Keywords: Multiple sclerosis, outcome measures, rehabilitation, reliability, validity, PHYSICAL PERFORMANCE, BALANCE DISORDERS, OLDER-ADULTS, INDIVIDUALS, DIRECTION, MOBILITY, SCALES, RISK

Abstract

© 2021 Taylor & Francis Group, LLC.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.