Why the study?
Does chronic treadmill exercise training alter arteriolar adrenergic vasoreactivity in young and old male Fischer 344 rats?
Population
Young and old male Fischer 344 rats
Comparison
Chronic treadmill exercise training vs Sedentary control
Design
Preclinical
Key result
Exercise training in old rats attenuated age-augmented alpha-adrenergic vasoconstriction in skeletal muscle arterioles through an endothelial alpha-receptor-NOS-signalling pathway.
Authors
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Hypothesis-generating for exercise effects on aged vascular adrenergic signaling; requires human studies before clinical translation.
Does chronic treadmill exercise training alter arteriolar adrenergic vasoreactivity in young and old male Fischer 344 rats?
Exercise training attenuates age-related increases in alpha-adrenergic vasoconstriction in skeletal muscle arterioles, highlighting a potential mechanism for its cardiovascular benefits.
Donato et al. (2006) studied Ageing. Exercise training vs. Sedentary was evaluated on Arteriolar adrenergic vasoreactivity (responses to noradrenaline, isoproterenol, and forskolin). Exercise training in old rats attenuated age-augmented alpha-adrenergic vasoconstriction in skeletal muscle arterioles through an endothelial alpha-receptor-NOS-signalling pathway.
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