Ankle dorsiflexion, not plantarflexion strength , predicts the functional mobility of people with spastic Hemiplegia

Sheung Mei Shamay Ng, Christina W.Y. Hui-Chan

Research output: Journal article publicationJournal articleAcademic researchpeer-review

19 Citations (Scopus)

Abstract

Objective: To determine the relationships between affected ankle dorsiflexion strength, other ankle muscle strength measurements, plantarflexor spasticity, and Timed "Up & Go" (TUG) times in people with spastic hemiplegia after stroke. Design: A cross-sectional study. Setting: A university-based rehabilitation centre. Participants: Seventy-three subjects with spastic hemiplegia. Main outcome measures: Functional mobility was assessed using TUG times. Plantarflexor spasticity was measured using the Composite Spasticity Scale. Affected and unaffected ankle dorsiflexion and plantarflexion strength were recorded using a load-cell mounted on a foot support with the knee bent at 50° and subjects in supine lying. Results: TUG times demonstrated strong negative correlation with affected ankle dorsiflexion strength (r = -0.67, p ≤ 0.001) and weak negative correlations with other ankle muscle strength measurements (r = -0.28 to -0.31, p ≤ 0.05), but no significant correlation with plantarflexor spasticity. A linear regression model showed that affected ankle dorsiflexion strength was independently associated with TUG times and accounted for 27.5% of the variance. The whole model explained 47.5% of the variance in TUG times. Conclusion: Affected ankle dorsiflexion strength is a crucial component in determining the TUG performance, which is thought to reflect functional mobility in subjects with spastic hemiplegia.
Original languageEnglish
Pages (from-to)541-545
Number of pages5
JournalJournal of Rehabilitation Medicine
Volume45
Issue number6
DOIs
Publication statusPublished - 14 Jun 2013

Keywords

  • Ankles
  • Functional mobility
  • Rehabilitation
  • Stroke
  • Walking

ASJC Scopus subject areas

  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

Cite this