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Diaphragmatic function during immersion to midneck level was studied in upright mongrel dogs, using constant electrophrenic stimulation. Effectiveness of diaphragmatic contraction was analyzed in terms of inspired volume (VT) (with airways open), and change in intrathoracic pressure (Pmus) (with the respiratory system occluded). Hydrostatic compression of the immersed body decreased functional residual capacity (FRC) to 55% base-line value (FRCO), resulting in a 2.8-fold increase in Pmus. In spite of this Pmus increase, VT often decreased during immersion, averaging only 83% VTO (base-line value in air). Hence, immersion was associated with a marked stiffening of the respiratory system. The Pmus increase during immersion persisted after restoration of FRC to FRCO, and was related to diaphragmatic length being greater in water than in air under condition of iso-lung volume. In all, there were three factors affecting diaphragmatic function during immersion: FRC reduction, change in thoracic configuration, and stiffening of the respiratory system.
V D Minh, and
G F Dolan, and
P G Linaweaver, and
P J Friedman, and
R G Konopka, and
B B Brach
March 1977,
Undersea biomedical research,
V D Minh, and
G F Dolan, and
P G Linaweaver, and
P J Friedman, and
R G Konopka, and
B B Brach
September 2013,
Aviation, space, and environmental medicine,
V D Minh, and
G F Dolan, and
P G Linaweaver, and
P J Friedman, and
R G Konopka, and
B B Brach
January 1993,
Environmental medicine : annual report of the Research Institute of Environmental Medicine, Nagoya University,
V D Minh, and
G F Dolan, and
P G Linaweaver, and
P J Friedman, and
R G Konopka, and
B B Brach
January 1991,
Canadian journal of anaesthesia = Journal canadien d'anesthesie,
V D Minh, and
G F Dolan, and
P G Linaweaver, and
P J Friedman, and
R G Konopka, and
B B Brach
July 2017,
Physiotherapy theory and practice,
V D Minh, and
G F Dolan, and
P G Linaweaver, and
P J Friedman, and
R G Konopka, and
B B Brach
February 1987,
Journal of applied physiology (Bethesda, Md. : 1985),
V D Minh, and
G F Dolan, and
P G Linaweaver, and
P J Friedman, and
R G Konopka, and
B B Brach
May 1986,
Journal of applied physiology (Bethesda, Md. : 1985),
V D Minh, and
G F Dolan, and
P G Linaweaver, and
P J Friedman, and
R G Konopka, and
B B Brach
June 1980,
Journal of applied physiology: respiratory, environmental and exercise physiology,
V D Minh, and
G F Dolan, and
P G Linaweaver, and
P J Friedman, and
R G Konopka, and
B B Brach
June 2017,
Journal of physiological anthropology,
V D Minh, and
G F Dolan, and
P G Linaweaver, and
P J Friedman, and
R G Konopka, and
B B Brach
June 1999,
Archivos de bronconeumologia,
