What question did this study set out to answer?

To determine how endurance exercise training influences regional blood flow distribution during maximal exercise in foxhounds.

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

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Training effects on regional perfusion remain model-specific; leaves open human applicability and mechanisms of VO2max gains.

To determine how endurance exercise training influences regional blood flow distribution during maximal exercise in foxhounds.
Foxhounds completed 8–12 weeks of treadmill running at 80% of maximal heart rate for 1 hour per day, 5 days per week.
Hemodynamic measurements and regional blood flow to skeletal muscles, visceral organs, heart, and brain were measured during maximal exercise pre- and post-training.
Endurance training led to a 31% increase in maximal oxygen consumption, a 28% increase in maximal cardiac output, and a 23% reduction in systemic vascular resistance during maximal exercise.
Blood flow increased to the gastrocnemius muscle post-training, while perfusion to the heart, diaphragm, brain, skin, and 9 of 10 other examined muscles remained comparable to pre-training values.
Visceral vasoconstriction increased following training, showing significant reductions in blood flow to the large intestine, spleen, liver, adrenal glands, and kidneys, along with an intensified reduction in stomach blood flow.

Musch et al. (1987) studied this question.

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View Full Paper

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Authors

Training effects on regional perfusion remain model-specific; leaves open human applicability and mechanisms of VO2max gains.

To determine how endurance exercise training influences regional blood flow distribution during maximal exercise in foxhounds.
Foxhounds completed 8–12 weeks of treadmill running at 80% of maximal heart rate for 1 hour per day, 5 days per week.
Hemodynamic measurements and regional blood flow to skeletal muscles, visceral organs, heart, and brain were measured during maximal exercise pre- and post-training.
Endurance training led to a 31% increase in maximal oxygen consumption, a 28% increase in maximal cardiac output, and a 23% reduction in systemic vascular resistance during maximal exercise.
Blood flow increased to the gastrocnemius muscle post-training, while perfusion to the heart, diaphragm, brain, skin, and 9 of 10 other examined muscles remained comparable to pre-training values.
Visceral vasoconstriction increased following training, showing significant reductions in blood flow to the large intestine, spleen, liver, adrenal glands, and kidneys, along with an intensified reduction in stomach blood flow.

Musch et al. (1987) studied this question.

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