Cited by 493Muscle activation and electromyography studiesRespiratory Support and MechanismsNeuroscience of respiration and sleep

Changes in intra-abdominal pressure during postural and respiratory activation of the human diaphragm

Hodges, Paul W., Gandevia, Simon C.·2000·Journal of Applied Physiology

Abstract

In humans, when the stability of the trunk is challenged in a controlled manner by repetitive movement of a limb, activity of the diaphragm becomes tonic but is also modulated at the frequency of limb movement. In addition, the tonic activity is modulated by respiration. This study investigated the mechanical output of these components of diaphragm activity. Recordings were made of costal diaphragm, abdominal, and erector spinae muscle electromyographic activity; intra-abdominal, intrathoracic, and transdiaphragmatic pressures; and motion of the rib cage, abdomen, and arm. During limb movement the diaphragm and transversus abdominis were tonically active with added phasic modulation at the frequencies of both respiration and limb movement. Activity of the other trunk muscles was not modulated by respiration. Intra-abdominal pressure was increased during the period of limb movement in proportion to the reactive forces from the movement. These results show that coactivation of the diaphragm and abdominal muscles causes a sustained increase in intra-abdominal pressure, whereas inspiration and expiration are controlled by opposing activity of the diaphragm and abdominal muscles to vary the shape of the pressurized abdominal cavity.

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Crossref · 10.1152/jappl.2000.89.3.967

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  • This dual function must involve coordination of the diaphragm and other muscles surrounding the abdominal cavity and may compromise the respiratory motion of the rib cage and abdomen.

    “This dual function must involve coordination of the diaphragm and other muscles surrounding the abdominal cavity and may compromise the respiratory motion of the rib cage and abdomen. 37”

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Authors
Hodges, P. W., & Gandevia, S. C.
Affiliations
UNSW Sydney (AU)
Venue
Journal of Applied Physiology
Published
2000-09-01
Volume
89
Issue
3
Pages
967-976
ISSN
  • 0161-7567 (ISSN-L)
  • 8750-7587
  • 1522-1601
OpenAlex
W2118588173
Cited by
493
References
29
Citations by year
2026: 35 · 2025: 47 · 2024: 22 · 2023: 29 · 2022: 35 · 2021: 26 · 2020: 26 · 2019: 22 · 2018: 21 · 2017: 25 · 2016: 23 · 2015: 17 · 2014: 19 · 2013: 23 · 2012: 13
FWCI
6.24
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Applied Physiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
  • Health Sciences › Medicine › Pulmonary and Respiratory Medicine › Respiratory Support and Mechanisms
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Neuroscience of respiration and sleep
Keywords
intra-abdominal pressure, diaphragm, transversus abdominis, respiratory modulation, core stability, limb movement, coactivation, abdominal muscles, erector spinae, rib cage motion, electromyography, transdiaphragmatic pressure
MeSH terms
Abdomen, Abdominal Muscles, Adult, Diaphragm, Electromyography, Extremities, Humans, Male, Motion, Movement, Posture, Pressure, Respiration, Respiratory Physiological Phenomena, Ribs, Shoulder, Spine, Muscle, Skeletal

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