The "Abdominal Circulatory Pump": An Auxiliary Heart during Exercise?

Frontiers in Physiology
Barbara UvaB Kayser

Abstract

Apart from its role as a flow generator for ventilation the diaphragm has a circulatory role. The cyclical abdominal pressure variations from its contractions cause swings in venous return from the splanchnic venous circulation. During exercise the action of the abdominal muscles may enhance this circulatory function of the diaphragm. Eleven healthy subjects (25 ± 7 year, 70 ± 11 kg, 1.78 ± 0.1 m, 3 F) performed plantar flexion exercise at ~4 METs. Changes in body volume (ΔVb) and trunk volume (ΔVtr) were measured simultaneously by double body plethysmography. Volume of blood shifts between trunk and extremities (Vbs) was determined non-invasively as ΔVtr-ΔVb. Three types of breathing were studied: spontaneous (SE), rib cage (RCE, voluntary emphasized inspiratory rib cage breathing), and abdominal (ABE, voluntary active abdominal expiration breathing). During SE and RCE blood was displaced from the extremities into the trunk (on average 0.16 ± 0.33 L and 0.48 ± 0.55 L, p < 0.05 SE vs. RCE), while during ABE it was displaced from the trunk to the extremities (0.22 ± 0.20 L p < 0.001, p < 0.05 RCE and SE vs. ABE respectively). At baseline, Vbs swings (maximum to minimum amplitude) were bimodal and averaged 0.13 ± 0.08 L. During e...Continue Reading

References

Nov 1, 1976·The American Journal of Physiology·D E FixlerL D Horwitz
Jan 1, 1974·Physiological Reviews·L B Rowell
Apr 1, 1995·Brain and Cognition·V J SamarM R Raghuveer
Oct 1, 1996·Respiration Physiology·D M AinsworthK Snedden
May 1, 1997·Journal of Applied Physiology·C A HarmsJ A Dempsey
Mar 2, 1999·Journal of Biomechanics·J CholewickiS M McGill
Nov 7, 1999·European Spine Journal : Official Publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society·J CholewickiS M McGill
Aug 24, 2000·Journal of Applied Physiology·P W Hodges, S C Gandevia
Jun 21, 2001·Respiration; International Review of Thoracic Diseases·A Aliverti, P T Macklem
Dec 18, 2001·The Journal of Physiology·P W HodgesS C Gandevia
Oct 23, 2002·Journal of Applied Physiology·Jason J HamannPhilip S Clifford
Sep 1, 1960·Journal of Applied Physiology·R L JOHNSONR E FORSTER
Mar 1, 1955·The American Journal of Physiology·A C GUYTONB N KAUFMANN
Jul 13, 2004·Journal of Applied Physiology·Michael E Tschakovsky, Don D Sheriff
Jul 29, 2006·Journal of Applied Physiology·Kenneth C BeckBruce D Johnson
Feb 7, 2007·Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society·R von BorriesH Nazeran
Jan 27, 2009·Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology·Markus RoosPaul Erne
May 15, 2009·PloS One·Andrea AlivertiPeter T Macklem
Sep 4, 2010·Journal of Applied Physiology·Andrea AlivertiPeter T Macklem

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Citations

Jul 14, 2016·Breathe·Andrea Aliverti
Jun 13, 2018·Frontiers in Physiology·Antonella LoMauro, Andrea Aliverti
Mar 13, 2020·Journal of Applied Physiology·William S CheyneNeil D Eves
Jun 18, 2017·Frontiers in Physiology·Sara J AbdallahDennis Jensen

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