Document Detail

Reduced blood flow in abdominal viscera measured by Doppler ultrasound during one-legged knee extension.
MedLine Citation:
PMID:  9931212     Owner:  NLM     Status:  MEDLINE    
The redistribution of blood flow (BF) in the abdominal viscera during right-legged knee extension-flexion exercise at very low intensity [peak heart rate (HR), 76 beats/min] was examined by using Doppler ultrasound. While sitting, subjects performed a right-legged knee extension-flexion exercise every 6 s for 20 min. BF was measured in the upper abdominal aorta (Ao), right common femoral artery (RCFA), and left common femoral artery (LCFA). Visceral BF (BFVis) was determined by the equation [BFAo - (BFRCFA + BFLCFA)]. A comparison with the change in BF (DeltaBF) preexercise showed a greater increase in DeltaBFRCFA than in DeltaBFAo during exercise. This resulted in a reduction of BFVis to 56% of its preexercise value or a decrease in flow by 1,147 +/- 293 (+/-SE) ml/min at the peak workload. Oxygen consumption correlated positively with DeltaBFAo, DeltaBFRCFA, and DeltaBFLCFA but inversely with DeltaBFVis during exercise and recovery. Furthermore, BFVis (% of preexercise value) correlated inversely with both an increase in HR (r = -0.89), and percent peak oxygen consumption (r = -0.99). This study demonstrated that, even during very-low-intensity exercise (HR <90 beats/min), there was a significant shift in BF from the viscera to the exercising muscles.
T Osada; T Katsumura; T Hamaoka; S Inoue; K Esaki; A Sakamoto; N Murase; J Kajiyama; T Shimomitsu; H Iwane
Publication Detail:
Type:  Clinical Trial; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of applied physiology (Bethesda, Md. : 1985)     Volume:  86     ISSN:  8750-7587     ISO Abbreviation:  J. Appl. Physiol.     Publication Date:  1999 Feb 
Date Detail:
Created Date:  1999-03-22     Completed Date:  1999-03-22     Revised Date:  2013-09-26    
Medline Journal Info:
Nlm Unique ID:  8502536     Medline TA:  J Appl Physiol (1985)     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  709-19     Citation Subset:  IM    
Department of Preventive Medicine and Public Health, Tokyo Medical University, Tokyo 160-8402, Japan.
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MeSH Terms
Aorta, Abdominal / physiology,  ultrasonography
Blood Pressure / physiology
Exercise / physiology*
Femoral Artery / physiology,  ultrasonography
Knee / physiology*
Lung / physiology
Oxygen Consumption / physiology
Regional Blood Flow / physiology
Splanchnic Circulation / physiology*
Ultrasonography, Doppler

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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