Differences in mouth occlusion pressure and breathing pattern between arm and leg incremental exercise

Acta Physiologica Scandinavica
M RamonatxoC Prefaut

Abstract

The aim of the study was to compare breathing pattern, mouth occlusion pressure, mean inspiratory flow and the ratio of mouth occlusion pressure to mean inspiratory flow at the same power output and carbon dioxide output during arm and leg incremental exercise. Mouth occlusion pressure was used as an index of inspiratory neuromuscular activity and its ratio to mean inspiratory flow as an index of the 'effective' impedance of the respiratory system. Eight normal subjects performed two incremental exercise tests, one with arms, the other with legs, on different weeks and in randomized order, and on two identical cycle ergometers. The power output was increased by steps of 25 W for arms and 50 W for legs every 4 min until exhaustion. At the same power output, oxygen consumption, carbon dioxide output, ventilation, mean inspiratory flow, mouth occlusion pressure, 'effective' impedance (P < 0.001) and respiratory frequency (P < 0.01) were higher during arm exercise than during leg exercise, whereas inspiratory time (P < 0.05) and expiratory time (P < 0.01) were lower. At the same carbon dioxide output, mouth occlusion pressure, ventilation, 'effective' impedance (P < 0.001) and respiratory frequency (P < 0.01) were higher and expira...Continue Reading

Citations

Dec 19, 2007·European Journal of Applied Physiology·Bruno M SilvaClaudio Gil Soares Araújo
Oct 2, 2003·Respiratory Physiology & Neurobiology·D Paul Sumners, Duncan L Turner
Jan 21, 2003·The Japanese Journal of Physiology·Masahiro ItohKatsuhide Nishi
May 21, 2009·Clinical Physiology and Functional Imaging·Knud Kalsås, Einar Thorsen
Aug 9, 2005·Archives of Physical Medicine and Rehabilitation·Déborah Le Foll-de MoroJean Lonsdorfer
Aug 6, 2005·American Journal of Physiology. Regulatory, Integrative and Comparative Physiology·S KeslacyM Ramonatxo
Jan 20, 2016·Medicine and Science in Sports and Exercise·Shuang QiuJ Andrew Taylor
Aug 19, 1999·Clinical Physiology·M P TulppoH V Huikuri

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