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Irregular arm swing may point to Parkinson's disease
Date:12/10/2009

ameras that captured the exact position of each segment of the body during a walk.

"Images from the cameras were sent to a computer where special software analyzed the data" explained Huang. "When a person walks, the computer was able to calculate the degree of swing of each arm with millimeter accuracy."

Analysis of the magnitude of arm swing, asymmetry and walking speed revealed that the arm swing of people with Parkinson's has remarkably greater asymmetry than people in the control group -- one arm swung significantly less than the other in the Parkinson's patients.

When the participants walked at a faster speed, the arm swing increased but the corresponding asymmetry between them remained the same.

"We believe this is the first demonstration that asymmetrical arm swings may be a very early sign of the disease," said Huang.

While slightly irregular arm swing occurs in people without Parkinson's, the asymmetry is significantly larger in those suffering from the disease.

"Our data suggests that this could be a very useful tool for the early detection of Parkinson's," noted Huang. "There are wide scale efforts to find drugs that slow cell death. When they are found, they could be used in conjunction with this technique to arrest or perhaps cure the disease because they could be given before great damage has occurred."


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Contact: Amitabh Avasthi
aem1@psu.edu
814-865-9481
Penn State
Source:Eurekalert

Page: 1 2

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