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Cited by 363Muscle activation and electromyography studiesNeuroscience of respiration and sleepMuscle Physiology and Disorders

Activation of the human diaphragm during a repetitive postural task

Open access
Hodges, Paul W., Gandevia, S. C.·2000·The Journal of Physiology
DOI 10.1111/j.1469-7793.2000.t01-1-00165.xmPMC PMC2269747
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Abstract

The co‐ordination between respiratory and postural functions of the diaphragm was investigated during repetitive upper limb movement. It was hypothesised that diaphragm activity would occur either tonically or phasically in association with the forces from each movement and that this activity would combine with phasic respiratory activity. Movements of the upper limb and ribcage were measured while standing subjects performed repetitive upper limb movements ‘as fast as possible’. Electromyographic (EMG) recordings of the costal diaphragm were made using intramuscular electrodes in four subjects. Surface electrodes were placed over the deltoid and erector spinae muscles. In contrast to standing at rest, diaphragm activity was present throughout expiration at 78 ± 17% (mean ± s.d.) of its peak inspiratory magnitude during repeated upper limb movement. Bursts of deltoid and erector spinae EMG activity occurred at the limb movement frequency (≈2.9 Hz). Although the majority of diaphragm EMG power was at the respiratory frequency (≈0.4 Hz), a peak was also present at the movement frequency. This finding was corroborated by averaged EMG activity triggered from upper limb movement. In addition, diaphragm EMG activity was coherent with ribcage motion at the respiratory frequency and with upper limb movement at the movement frequency. The diaphragm response was similar when movement was performed while sitting. In addition, when subjects moved with increasing frequency the peak upper limb acceleration correlated with diaphragm EMG amplitude. These findings support the argument that diaphragm contraction is related to trunk control. The results indicate that activity of human phrenic motoneurones is organised such that it contributes to both posture and respiration during a task which repetitively challenges trunk posture.

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  • The literature suggests that the diaphragm has a dual role in both respiration and mechanical stabilisation of the spine via increased intra-abdominal pressure.

    “The literature suggests that the diaphragm has a dual role in both respiration and mechanical stabilisation of the spine via increased intra-­ abdominal pressure. 36”

    From Physiotherapy assessment of breathing pattern disorder: a qualitative evaluation (2023) · cites this paper as [36]

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Research works printed but not linked: 11

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Authors
Hodges, P. W., & Gandevia, S. C.
Affiliations
Neuroscience Research Australia (AU)
Corresponding author
Hodges, Paul W.
ORCID
Venue
The Journal of Physiology
Publisher
Wiley
Published
2000-01
Volume
522
Issue
1
Pages
165-175
ISSN
  • 0022-3751 (ISSN-L)
  • 1469-7793
DOI
10.1111/j.1469-7793.2000.t01-1-00165.xm
PMC
PMC2269747
OpenAlex
W2140207838
Cited by
363
References
37
Citations by year
2026: 33 · 2025: 35 · 2024: 17 · 2023: 21 · 2022: 21 · 2021: 16 · 2020: 15 · 2019: 19 · 2018: 19 · 2017: 13 · 2016: 14 · 2015: 17 · 2014: 15 · 2013: 13 · 2012: 7
FWCI
4.51
Type
journal article
Language
en
Open access
Licence
onlinelibrary.wiley.com/termsAndConditions#vor (vor)
Locations
  • The Journal of Physiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Health and Medical Research Council
  • National Medical Research Council
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Muscle activation and electromyography studies
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Neuroscience of respiration and sleep
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Muscle Physiology and Disorders
Keywords
diaphragm, repetitive upper limb movements, costal diaphragm, trunk control, deltoid muscle, erector spinae
MeSH terms
Adult, Arm, Diaphragm, Electromyography, Humans, Male, Movement, Posture, Respiratory Physiological Phenomena, Ribs

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