Strength, Endurance, and Stability of the Tongue and Hand in Parkinson Disease

Weakness and fatigue in the orofacial system often are presumed to contribute to the dysarthria associated with neuromotor disorders, although previous research findings are equivocal. In this study, tongue strength, endurance, and stability during a sustained submaximal effort were assessed in 16 p...

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Bibliographic Details
Published in:Journal of speech, language, and hearing research language, and hearing research, 2000-02, Vol.43 (1), p.256-267
Main Authors: Solomon, Nancy Pearl, Robin, Donald A, Luschei, Erich S
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Biological and medical sciences
Degenerative and inherited degenerative diseases of the nervous system. Leukodystrophies. Prion diseases
Dysarthria - diagnosis
Dysarthria - physiopathology
Elderly people
Female
Hand Strength - physiology
Hands
Humans
Male
Medical sciences
Middle Aged
Motor ability
Neurology
Parkinson Disease - diagnosis
Parkinson's disease
Retrospective Studies
Severity of Illness Index
Stability
Strength
Studies
Tongue
Tongue - physiopathology
Tongues
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Summary:Weakness and fatigue in the orofacial system often are presumed to contribute to the dysarthria associated with neuromotor disorders, although previous research findings are equivocal. In this study, tongue strength, endurance, and stability during a sustained submaximal effort were assessed in 16 persons with mild to severe Parkinson disease (PD) and a perceptible speech disorder. The same measures were taken from one hand for comparison. Only tongue endurance was found to be significantly lower in these participants than in neurologically normal control participants matched for sex, age, weight, and height. Analyses of data from a larger sample comprising the present and retrospective data revealed lower-than-normal tongue strength and endurance in participants with PD. No significant correlations were found between tongue strength and endurance, interpause speech rate, articulatory precision, and overall speech defectiveness for the present and previously studied participants with PD, bringing into question the influence of modest degrees of tongue weakness and fatigue on perceptible speech deficits.
ISSN:1092-4388
1558-9102
DOI:10.1044/jslhr.4301.256