Why the study?
Does the intensity and duration of acute exercise affect heart cAMP, phosphorylase, and glycogen degradation in rats?
Population
Groups of rats
Comparison
Acute exercise bout vs Resting levels (0 min exercise)
Design
Preclinical
Follow-up
0 to 30 minutes
Authors
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Myocardial glycogen degradation during exercise may proceed independently of cAMP in rats; leaves open phosphorylase a as a reliable marker in humans.
Does the intensity and duration of acute exercise affect heart cAMP, phosphorylase, and glycogen degradation in rats?
In a rat model, myocardial glycogen degradation during exercise occurs independently of cAMP, suggesting that the percentage of phosphorylase in the a form is not a reliable indicator of glycogenolytic rate.
Goldfarb et al. (1986) studied this question.
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