HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text Free Full Text (PDF) Free Submit a response Alert me when this article is cited Alert me when eLetters are posted Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Osada, T. Articles by Iwane, H. Search for Related Content PubMed PubMed Citation Articles by Osada, T. Articles by Iwane, H.

Vol. 86, Issue 2, 709-719, February 1999

Reduced blood flow in abdominal viscera measured by Doppler ultrasound during one-legged knee extension

Takuya Osada¹, Toshihito Katsumura¹, Takafumi Hamaoka¹, Shigeru Inoue¹, Kazuki Esaki¹, Ayumi Sakamoto^1,2, Norio Murase^1,2, Junichi Kajiyama², Teruichi Shimomitsu¹, and Hisao Iwane^1,

¹ Department of Preventive Medicine and Public Health, Tokyo Medical University, Tokyo 160-8402; and ² Tokyo Metropolitan Health Promotion Center, Tokyo 160-0021, Japan

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 (BF_Vis) was determined by the equation [BF_Ao  (BF_RCFA + BF_LCFA)]. A comparison with the change in BF (BF) preexercise showed a greater increase in BF_RCFA than in BF_Ao during exercise. This resulted in a reduction of BF_Vis 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 BF_Ao, BF_RCFA, and BF_LCFA but inversely with BF_Vis during exercise and recovery. Furthermore, BF_Vis (% 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.

abdominal visceral blood flow; dynamic knee extension-flexion exercise; pulmonary oxygen consumption; Doppler ultrasound

---

Deceased.

This article has been cited by other articles:

				G. A. Selkirk, T. M. McLellan, H. E. Wright, and S. G. Rhind Mild endotoxemia, NF-{kappa}B translocation, and cytokine increase during exertional heat stress in trained and untrained individuals Am J Physiol Regulatory Integrative Comp Physiol, August 1, 2008; 295(2): R611 - R623. [Abstract] [Full Text] [PDF]

				N. D. Paterson, J. M. Kowalchuk, and D. H. Paterson Kinetics of V.02 and femoral artery blood flow during heavy-intensity, knee-extension exercise J Appl Physiol, August 1, 2005; 99(2): 683 - 690. [Abstract] [Full Text] [PDF]

				D. W. Wray, A. Uberoi, L. Lawrenson, and R. S. Richardson Heterogeneous limb vascular responsiveness to shear stimuli during dynamic exercise in humans J Appl Physiol, July 1, 2005; 99(1): 81 - 86. [Abstract] [Full Text] [PDF]

				A. W. Sheel, P. A. Derchak, D. F. Pegelow, and J. A. Dempsey Threshold effects of respiratory muscle work on limb vascular resistance Am J Physiol Heart Circ Physiol, May 1, 2002; 282(5): H1732 - H1738. [Abstract] [Full Text] [PDF]

				A W. Sheel, P A. Derchak, B. J Morgan, D. F Pegelow, A. J Jacques, and J. A Dempsey Fatiguing inspiratory muscle work causes reflex reduction in resting leg blood flow in humans J. Physiol., November 15, 2001; 537(1): 277 - 289. [Abstract] [Full Text] [PDF]

				J. A. Otte, E. Oostveen, R. H. Geelkerken, A. B. J. Groeneveld, and J. J. Kolkman Exercise induces gastric ischemia in healthy volunteers: a tonometry study J Appl Physiol, August 1, 2001; 91(2): 866 - 871. [Abstract] [Full Text] [PDF]