Abdominal muscle activity during speech production.

Journal Article (Journal Article)

Abdominal muscle activity was investigated during resting tidal breathing and speech production in upright and supine body positions in five male and five female young adult subjects. Results showed that patterns of abdominal electromyographic (EMG) activity were highly dependent on body position. Data for resting tidal breathing resembled those of previous investigations and revealed one sex-related finding. Data for speech production indicated that the lateral region of the abdomen was highly active in the upright position and occasionally active in the supine position. In the upright position, lateral EMG levels during speech production were characterized by generally higher levels in the lower than upper lateral sites and were almost always higher than during resting tidal breathing. In the supine position, EMG levels during speech production occasionally exceeded those associated with resting tidal breathing but were substantially lower than those associated with upright speech production. Abdominal EMG activity was most prevalent during loud speech production and during speech produced at low lung volumes. Findings are discussed in relation to current knowledge of respiratory mechanics and neural control.

Full Text

Duke Authors

Cited Authors

  • Hoit, JD; Plassman, BL; Lansing, RW; Hixon, TJ

Published Date

  • December 1988

Published In

Volume / Issue

  • 65 / 6

Start / End Page

  • 2656 - 2664

PubMed ID

  • 3215865

International Standard Serial Number (ISSN)

  • 8750-7587

Digital Object Identifier (DOI)

  • 10.1152/jappl.1988.65.6.2656


  • eng

Conference Location

  • United States