Reliability and validity of alternate step test times in subjects with chronic stroke

Mandy M L Chung, Rebecca W Y Chan, Ying Ki Fung, Shirley S M Fong, Stefanie S L Lam, Charles W K Lai, Sheung Mei Shamay Ng

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)


Objective: (i) To investigate the intra-rater, inter-rater and test-retest reliability and minimal detectable change of the Alternate Step Test (AST) when assessing people with chronic stroke. (ii) To quantify the correlation between AST times and stroke-specific impairments. Design: Cross-sectional study. Setting: University-based rehabilitation centre. Participants: A convenience sample of 86 participants: 45 with chronic stroke, and 41 healthy elderly subjects. Methods: The AST was administered along with the Fugl-Meyer Lower Extremity Assessment (FMA-LE), the Five Times Sit-To-Stand Test (FTSTS), limits of stability (LOS) measurements, Berg Balance Scale (BBS) scores, Chinese-translated Activities-specific Balance Confidence Scale (ABC-C) ratings, and the Timed "Up and Go" test (TUG). Results: Excellent intra-rater, inter-rater and test-retest reliability were found, with a minimal detectable change of 3.26 s. AST times were significantly associated with FMA-LE assessment, FTSTS times, LOS in the forward and backward directions and to the affected side, BBS ratings and TUG times. Conclusion: AST time is a reliable assessment tool that correlates with different stroke-specific impairments in people with chronic stroke.
Original languageEnglish
Pages (from-to)969-974
Number of pages6
JournalJournal of Rehabilitation Medicine
Issue number10
Publication statusPublished - 1 Jan 2014


  • Balance
  • Rehabilitation
  • Stepping
  • Stroke

ASJC Scopus subject areas

  • Medicine(all)
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation


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