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Related Experiment Videos

Speech breathing in Parkinson's disease

N P Solomon1, T J Hixon

  • 1Department of Speech Pathology and Audiology, University of Iowa, Iowa City 52242.

Journal of Speech and Hearing Research
|April 1, 1993
PubMed
Summary

Parkinson's disease affects breathing, causing faster rates and altered rib cage-abdominal movement during rest and speech. This may indicate reduced rib cage compliance and impaired airflow control in individuals with Parkinson's.

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Area of Science:

  • Neurology
  • Respiratory Physiology
  • Speech Science

Background:

  • Parkinson's disease (PD) is a neurodegenerative disorder affecting motor control.
  • Breathing and speech production rely on complex neuromuscular coordination.
  • Dysfunction in these systems is often observed in PD but requires detailed investigation.

Purpose of the Study:

  • To investigate and compare breathing patterns during rest and speech tasks in individuals with Parkinson's disease and healthy controls.
  • To examine the effects of Parkinson's disease on respiratory kinematics, spirometry, acoustics, and pressure dynamics.
  • To explore potential differences in breathing function related to medication timing in Parkinson's disease patients.

Main Methods:

  • Recruitment of 14 male subjects with Parkinson's disease and 14 healthy male controls.
  • Collection of kinematic, spirometric, acoustic, and pressure data during tidal breathing, reading aloud, and monologue production.
  • Data acquisition at two time points within the drug cycle for Parkinson's disease subjects.

Main Results:

  • Subjects with Parkinson's disease exhibited faster resting breathing rates and greater minute ventilation.
  • Parkinson's disease patients showed reduced rib cage contribution to lung volume change during tidal breathing.
  • During speech, Parkinson's disease subjects initiated breaths with smaller rib cage and larger abdominal volumes, producing fewer words per breath group.

Conclusions:

  • Findings suggest reduced relative compliance of the rib cage to the abdomen in individuals with Parkinson's disease.
  • Results support the hypothesis of inadequate airflow valving during speech in Parkinson's disease.
  • Breathing alterations in Parkinson's disease may contribute to speech difficulties.

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