Muscle Strength Testing in Parkinson’s Disease

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Abstract
Isotonic muscle strength measured by a quantitative technique was decreased in early Parkinson’s disease compared to age-matched controls. Weakness was present both on the affected and unaffected side in hemiparkinsonism. Similar degrees of weakness occurred in limbs with tremor or rigidity. Muscle weakness appears to be a primary symptom of Parkinson’s disease which may relate to disturbed motor programming due to basal ganglia dysfunction.

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