Impaired Economy of Gait and Decreased Six-Minute Walk Distance in Parkinson's Disease

<table>Relationship between the Hoehn and Yahr stage and economy of gait (ratio of measured VO<sub>2</sub> to predicted VO<sub>2</sub>). Higher values of the ratio of measured VO<sub>2</sub> to predicted VO<sub>2</sub> are indicative of impaired economy of gait.</table>

Parkinson’s Disease

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Figure 2

Figure 2: Impaired Economy of Gait and Decreased Six-Minute Walk Distance in Parkinson's Disease 