Use of the gait deviation index for the evaluation of patients with parkinson's disease

Manuela Galli, Veronica Cimolin, Maria Francesca De Pandis, Michael H. Schwartz, Giorgio Albertini

Research output: Contribution to journalArticlepeer-review


The authors aimed to determine whether the Gait Deviation Index (GDI) could be feasible to characterize gait in patients with Parkinson's disease (PD) and evaluate outcomes of levodopa treatment. Twenty-two PD participants were evaluated with clinical examination and 3-D quantitative gait analysis (GDI was calculated from gait analysis) in 2 states (OFF and ON) after taking levodopa. Twenty age-matched healthy participants (CG) were included as controls. The GDI value in the OFF state was 83.4 ± 11.5 (statistically different from CG) while clinical scales demonstrated a moderate-severe gait impairment of these patients. Significant improvements are evident from clinical scores and by GDI values in the ON state. The mean GDI for the ON state (GDI ON: 87.9 ± 10.4) was significantly higher than in for the OFF state (GDI OFF: 83.4 ± 11.5), indicating a global gait improvement after the treatment. The results show that GDI has lower value as an indicator of pathology in PD patients than in quantifying the effects of levodopa treatment in PD state.

Original languageEnglish
Pages (from-to)161-167
Number of pages7
JournalJournal of Motor Behavior
Issue number3
Publication statusPublished - May 1 2012


  • gait deviation index
  • kinematics
  • Levodopa
  • Parkinson's disease

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Biophysics
  • Cognitive Neuroscience
  • Experimental and Cognitive Psychology


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