Training effects on regional blood flow response to maximal exercise in foxhounds

1987 ◽  
Vol 62 (4) ◽  
pp. 1724-1732 ◽  
Author(s):  
T. I. Musch ◽  
G. C. Haidet ◽  
G. A. Ordway ◽  
J. C. Longhurst ◽  
J. H. Mitchell
Keyword(s):  
Blood Flow ◽  
Gastrocnemius Muscle ◽  
Adrenal Glands ◽  
Maximal Exercise ◽  
Regional Blood Flow ◽  
Treadmill Running ◽  
Maximal Heart Rate ◽  
Blood Flow Response ◽  
Flow Response ◽  
Maximal Cardiac Output

The effect of training on the regional blood flow response to maximal exercise was investigated in the foxhound. Training consisted of 8–12 wk of treadmill running at 80% of maximal heart rate 1 h/day for 5 days/wk and resulted in a 31% increase in maximal O2 consumption, a 28% increase in maximal cardiac output, and a 23% decrease in systemic vascular resistance during maximal exercise. Blood flow to the heart, diaphragm, brain, skin, and 9 of 10 muscles investigated was similar during maximal exercise pre- and posttraining; however, blood flow to the gastrocnemius muscle was greater posttraining than it was pretraining. Blood flow to the stomach, small intestine, and pancreas decreased during maximal exercise pre- and posttraining; however, blood flow to the large intestine, spleen, liver, adrenal glands, and kidneys decreased during maximal exercise only posttraining. In addition, a larger decrease in blood flow to the stomach during maximal exercise was found posttraining compared with pretraining. These results demonstrate that blood flow to skeletal muscle, the kidneys, and the splanchnic region of the foxhound during maximal exercise can be significantly altered by dynamic exercise training.

scholarly journals Regional blood flow response to orthostasis in patients with congestive heart failure

1983 ◽  
Vol 1 (6) ◽  
pp. 1391-1395 ◽  
Author(s):  
Steven R. Goldsmith ◽  
Gary S. Francis ◽  
T. Barry Levine ◽  
Jay N. Cohn
Keyword(s):  
Heart Failure ◽  
Congestive Heart Failure ◽  
Blood Flow ◽  
Regional Blood Flow ◽  
Blood Flow Response ◽  
Flow Response

Forearm Blood Flow Response to an Acute Maximal Exercise Bout in Obese and Normal Weight Males

2011 ◽  
Vol 43 (Suppl 1) ◽  
pp. 740-741
Author(s):  
R. Lee Franco ◽  
Bennett A. Fallow ◽  
Chun-Jung Huang ◽  
Edmund Acevedo ◽  
James Arrowood ◽  
...  
Keyword(s):  
Blood Flow ◽  
Maximal Exercise ◽  
Forearm Blood Flow ◽  
Exercise Bout ◽  
Normal Weight ◽  
Blood Flow Response ◽  
Flow Response

Regional distribution of blood flow of dogs during graded dynamic exercise

1987 ◽  
Vol 63 (6) ◽  
pp. 2269-2277 ◽  
Author(s):  
T. I. Musch ◽  
D. B. Friedman ◽  
K. H. Pitetti ◽  
G. C. Haidet ◽  
J. Stray-Gundersen ◽  
...  
Keyword(s):  
Blood Flow ◽  
Maximal Exercise ◽  
Regional Blood Flow ◽  
Regional Distribution ◽  
Work Load ◽  
Work Intensity ◽  
Semitendinosus Muscle ◽  
Blood Flows ◽  
Flow Response ◽  
Semimembranosus Muscle

The regional blood flow response to progressive treadmill exercise was measured with radioactive microspheres in 25 untrained mongrel dogs. Incremental increases in work intensity resulted in corresponding increases in blood flows to the gracilis, gastrocnemius, semimembranosus, and semitendinosus muscles of the hindlimb and to the heart. During maximal exercise, blood flow was greatest in the semimembranosus muscle and lowest in the semitendinosus muscle (342 and 134 ml–1.100 g tissue-1.min-1, respectively). Exercise produced a decrease in blood flow to the temporalis muscle, which was classified as nonlocomotive in function. Blood flows to the stomach, pancreas, and large intestine decreased at the lowest exercise work load and remained diminished throughout the continuum to maximal exercise. Blood flows to the small intestine and spleen were maintained during submaximal exercise but were reduced by 50% at maximal O2 consumption (VO2max). No changes in blood flows to the kidneys, adrenal glands, liver, and brain were found. These results demonstrate that 1) renal blood flow is maintained at resting levels during exercise in untrained dogs; 2) blood flow changes in the various organs of the splanchnic region of dogs during exercise are heterogeneous; and 3) blood flows to the working skeletal muscles of dogs progressively increase with increasing work loads up to VO2max.

Hemodynamic and regional blood flow response to milrinone in patients with severe congestive heart failure: A dose-ranging study

1987 ◽  
Vol 114 (1) ◽  
pp. 97-105 ◽  
Author(s):  
Patricia G. Fitzpatrick ◽  
Michael P. Cinquegrani ◽  
Arthur R. Vakiener ◽  
Judith G. Baggs ◽  
Theodore L. Biddle ◽  
...  
Keyword(s):  
Heart Failure ◽  
Congestive Heart Failure ◽  
Blood Flow ◽  
Regional Blood Flow ◽  
Severe Congestive Heart Failure ◽  
Blood Flow Response ◽  
Flow Response ◽  
Dose Ranging

scholarly journals 127 REGIONAL BLOOD FLOW RESPONSE TO CHANGES IN ARTERIAL CARBON DIOXIDE TENSION (PaCO2) IN NEWBORN LAMBS

1978 ◽  
Vol 12 ◽  
pp. 385-385 ◽  
Author(s):  
Savitri P Kumar ◽  
Angela Karathanos ◽  
Andrew M Rabin ◽  
Ruth M Cortner ◽  
Jonathan P Knisely ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Blood Flow ◽  
Regional Blood Flow ◽  
Carbon Dioxide Tension ◽  
Arterial Carbon Dioxide Tension ◽  
Blood Flow Response ◽  
Arterial Carbon Dioxide ◽  
Flow Response

Training effects on the regional blood flow response to exercise in myocardial infarcted rats

1992 ◽  
Vol 262 (6) ◽  
pp. H1846-H1852 ◽  
Author(s):  
T. I. Musch ◽  
C. T. Nguyen ◽  
H. V. Pham ◽  
R. L. Moore
Keyword(s):  
Blood Flow ◽  
Predominantly White ◽  
Regional Blood Flow ◽  
Regional Distribution ◽  
Treadmill Running ◽  
Endurance Capacity ◽  
Flow Response ◽  
The Individual ◽  
Induced Changes ◽  
Response To Exercise

The regional blood flow (BF) response to submaximal exercise was determined for sedentary and trained myocardial infarcted (MI) rats. Training consisted of treadmill running (10% grade, 30 m/min) for 1 h/day, 5 days/wk for 12-14 wk and produced decreases in resting heart rate and increases in maximal O2 uptake and endurance capacity. BF determined at 2 and 6 min of exercise (via radiolabeled microspheres) demonstrated that trained rats maintained greater BF to organs found in the abdominal region when compared with their sedentary counterparts. BF to the total hindlimb musculature at 2 min of exercise was greater in sedentary rats when compared with their trained counterparts and was the consequence of greater BF to 10 of the 27 muscle or muscle parts investigated. At 6 min of exercise, BF to the total hindlimb musculature was similar between trained and sedentary rats, as BF in 9 of 27 muscles or muscle parts investigated decreased from 2 to 6 min of exercise for the sedentary group. In general, the BF patterns within and among the individual muscles of the hindlimb were different between the two groups. Trained rats tended to maintain greater BF to the predominantly red muscles, whereas the sedentary rats maintained greater BF to the predominantly white muscles at 6 min of exercise. In conclusion, the training-induced changes in BF found in this study are similar to those found previously for normal rats, and they demonstrate that endurance training produces changes in the regional distribution of BF during exercise in MI rats.

AGING ALTERS THE REGIONAL BLOOD FLOW RESPONSE TO SUBMAXIMAL EXERCISE IN RATS WITH CHF

2003 ◽  
Vol 35 (Supplement 1) ◽  
pp. S39
Author(s):  
K E. Eklund ◽  
K S. Hageman ◽  
D C. Poole ◽  
T I. Musch
Keyword(s):  
Blood Flow ◽  
Regional Blood Flow ◽  
Submaximal Exercise ◽  
Blood Flow Response ◽  
Flow Response

AGING ALTERS THE REGIONAL BLOOD FLOW RESPONSE TO SUBMAXIMAL EXERCISE IN RATS

2003 ◽  
Vol 35 (Supplement 1) ◽  
pp. S398
Author(s):  
T I. Musch ◽  
K E. Eklund ◽  
K S. Hageman ◽  
D C. Poole
Keyword(s):  
Blood Flow ◽  
Regional Blood Flow ◽  
Submaximal Exercise ◽  
Blood Flow Response ◽  
Flow Response

Determinants of VO2max in rats after high-intensity sprint training

1989 ◽  
Vol 66 (1) ◽  
pp. 195-201 ◽  
Author(s):  
M. R. Hilty ◽  
H. Groth ◽  
R. L. Moore ◽  
T. I. Musch
Keyword(s):  
High Intensity ◽  
Maximal Exercise ◽  
Citrate Synthase ◽  
Blood Gases ◽  
Treadmill Running ◽  
Maximal Heart Rate ◽  
Sprint Training ◽  
Sedentary Control ◽  
Maximal Cardiac Output ◽  
The Right

The hemodynamic response to maximal exercise was determined in rats that were subjected to high-intensity sprint training (HIST) and rats that served as sedentary controls. Training consisted of five 1-min bouts of treadmill running at work loads (15% grade, 97 m/min) in excess of the animals' maximal O2 uptake (VO2max) interspersed with 90 s of rest. Training was performed 6 days/wk for 6 wk. After the training regimen, all rats were acutely instrumented with catheters in the right carotid artery and right ventricle. O2 uptakes, hemodynamic parameters, arterial and mixed venous O2 concentrations, blood gases, and acid-base status were determined at rest and during submaximal and maximal exercise. Results demonstrated that VO2max of HIST rats was significantly greater than that found for sedentary control rats. This increase in VO2max was due to an increase in maximal cardiac output (Qmax), since maximal arteriovenous O2 difference was similar between trained and sedentary rats. The increase in Qmax was due to an increase in maximal stroke volume (SVmax), because maximal heart rate in trained rats was similar to that in sedentary control rats. Citrate synthase and phosphofructokinase activities measured in the white gastrocnemius, plantaris, and soleus muscles of trained and sedentary rats were similar. These results suggest that the increase in VO2max produced with HIST in rats is strongly linked to an increase in central cardiac function as indicated by an increase in Qmax and SVmax.

Sign in / Sign up

Export Citation Format

Share Document