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March 1, 1982Journal of Applied Physiology

Abdominal muscle use during quiet breathing and hyperpnea in uninformed subjects

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Key result

Standing and sitting, but not supine posture, involve abdominal muscle contraction during quiet breathing.

  • n=17

Population

17 uninformed subjects

Design

Cross-sectional

Authors

SLStephen H. LoringBeth Israel Deaconess Medical CenterJMJ. MeadThe University of Texas at El Paso

Discussion

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Implication

Posture may alter abdominal recruitment in quiet breathing assessments; challenges relaxation-only models and leaves open mechanistic confirmation.

Study Design

Type

Observational (n=17)

Structured PICO

P
Population
17 uninformed subjects evaluated for abdominal and rib cage displacements during quiet breathing and hyperpnea.
E
Exposure
Observation of abdominal and rib cage displacements with magnetometers during quiet breathing (standing, sitting, supine) and hyperpnea following exercise
O
Outcome
Abdominal muscle contraction (tonic or phasic)surrogate

The study demonstrates that most subjects normally contract their abdominal muscles while standing at rest, challenging the assumption that quiet breathing relies solely on relaxation characteristics.

Cite This Study

Loring et al. (1982) conducted an observational in Healthy subjects (breathing physiology) (n=17). Posture (standing, sitting) and hyperpnea vs. Supine posture and rest was evaluated on Abdominal muscle contraction (tonic or phasic). Most subjects showed evidence of tonic or phasic abdominal muscle contraction during quiet breathing while standing and sitting, but not supine, with greater contraction during hyperpnea.

synapsesocial.com/papers/6aa2f1e88adb575768fdd5eehttps://doi.org/10.1152/jappl.1982.52.3.700
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Activation of the parasternal intercostals during breathing efforts in human subjects1982 · 87 citations
  2. 2Relative contributions of rib cage and abdomen to breathing in normal subjects1975 · 201 citations
  3. 3Contractions of specific abdominal muscles in postural tasks are affected by respiratory maneuvers1997 · 146 citations
  4. 4Respiratory abdominal muscle recruitment and chest wall motion in myotonic muscular dystrophy2001 · 18 citations
  5. 5Effects of abdominal and thoracic breathing on breathing pattern components in normal subjects and in patients with chronic obstructive pulmonary disease.1984 · 60 citations