The Reliability, Validity, and Responsiveness of the Timed 360° Turn Test in Patients With Parkinson's Disease

The Reliability, Validity, and Responsiveness of the Timed 360° Turn Test in Patients With Parkinson's Disease

Difficulty in turning is common after Parkinson's Disease. Patients with Parkinson's Disease take a greater number of steps, longer duration, narrower base of support in turning. Thus, turning ability is systematically investigated in Parkinson's Disease. The aim of this study to invastigate reliability, validity, and responsiveness of the timed 360° turn test in Patients with Parkinson's Disease.

At baseline, the timed 360° turn test, Unified Parkinson's Disease Rating Scale, Hoehn and Yahr Scale, Berg Balance Scale, Functional Reach Test, Timed Up and Go Test, Four Square Step Test and Trunk Impairment Scale was applied to the patients with Parkinson's Disease when the patients were "on" period. The timed 360° turn test was repeated after seven days from the first application when patients with Parkinson's Disease were "on" period to evaluate its reliability.

Inclusion Criteria:

• at least 40 years of age,
• neurologist-diagnosed Parkinson's Disease
• Hoehn & Yahr (H&Y) stages 1 to 4,
• were able to walk 10 m with or without aids

Exclusion Criteria:

• visual, auditory, and orientational problems affecting study results
• orthopedic problems affecting walking,
• other neurologic conditions, cardiovascular, musculuskeletal, and vestibular disease