Key result
Prior swimming exercise in rats reduces post-AMI scar area ~1.6-fold and improves LV function.
Why the study?
Physical exercise training is known to protect against cardiovascular morbidity and mortality, but the structural and molecular aspects underlying this protection in the remodeling heart had not been investigated.
Does prior exercise training improve structural, functional, and molecular outcomes after acute myocardial infarction in rats?
Population
Rats undergoing surgical ligation of the left coronary artery
Comparison
Seven weeks of prior swimming exercise training vs untrained controls
Design
Animal experimental study
Follow-up
Four weeks
Authors
Loading...
Supports exercise preconditioning in rat MI models; extends preclinical data but leaves human translation open.
Does prior exercise training improve structural, functional, and molecular outcomes after acute myocardial infarction in rats?
Effect estimate: 1.6-fold smaller
p-value: p=0.0002
Prior exercise training in a rat model of myocardial infarction reduces scar size, increases arteriole density, and improves heart function during remodeling.
Freimann et al. (2005) studied Acute myocardial infarction. Swimming exercise training vs. Untrained control (sedentary) was evaluated on Scar area (1.6-fold smaller, p=0.0002). Prior swimming exercise training in rats reduced scar area 1.6-fold (p=0.0002) and increased left ventricular shortening fraction 1.9-fold (p=0.003) after acute myocardial infarction.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: