A study of the validity of the Six-Spot Step Test in ambulatory people with Parkinson's disease

Clinical Rehabilitation
John BrincksUlrik Dalgas

Abstract

The aim of this study was to evaluate the concurrent and divergent validity of the Six-Spot Step Test in mild to moderately impaired people with Parkinson's disease. Cross-sectional cohort study. Outpatient clinics. Fifty-eight people with Parkinson's disease. The Six-Spot Step Test, the Timed "Up and Go" test, the mini-Balance Evaluation Systems Test (mini-BESTest), and postural sway were tested on the same day, and the Spearman's Rank Correlation Coefficient (ρ) was used for data analysis. Subjects had a median age of 68 years (Q1-Q3: 62-73), a median Hoehn and Yahr score of 2.5 (Q1-Q3: 2-3), a median Six-Spot Step Test score of 7.9 seconds (Q1-Q3: 6.5-9.2), a median Timed "Up and Go" test score of 7.0 seconds (Q1-Q3: 5.6-7.9), a median mini-BESTest score of 22.5 (Q1-Q3: 19.8-25.0), and a median postural sway score of 27.9 mm2 (Q1-Q3: 15.0-53.5) and 22.5 mm/s (Q1-Q3: 14.6-39.8). Statistical significant correlations were found between the Six-Spot Step Test and the Timed "Up and Go" test (ρ = 0.81) and the mini-BESTest (ρ = -0.64), whereas no significant relations were identified between the Six-Spot Step Test and postural sway (ρ = 0.18, P > 0.05). In patients with Parkinson's disease, the Six-Spot Step Test showed promising ...Continue Reading

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