Endurance training may have a protective effect on the heart
Findings published in Experimental Physiology suggest that exercise could be just as important for your heart heath as cholesterol and a healthy diet.
Expression of genes used to repair damaged DNA increased in response to endurance exercise, even after just a single session, say scientists. The collaboration between the University of Maryland, the University of Texas Southwestern Medical Center, East Carolina University, the Catholic University of Brasilia and Southern Methodist University shows how physiological stressors like exercise can remodel heart tissue.
These findings are important for understanding how exercise provides a protective effect on the heart. The researchers hope that by understanding this process and basic heart biology, future research may lead to increased life expectancy and drug-free cures for chronic heart problems, including high blood pressure.
The researchers studied the hearts of mice after 30 minutes of running on a treadmill. They looked at how genes were being expressed compared to those in hearts of mice that had not been exercised. The group results are applicable to humans because these genes are regulated in a similar way to those in humans.
Professor Stephen Roth, one of the co-authors, from University of Maryland's Department of Kinesiology, said,
'The genes that are important for genome stability are upregulated in the heart tissue after a single bout of endurance exercise. This may contribute to the protective effects of exercise on cardiovascular health.'
Notes for Editors
1. Full paper title: Acute exercise activates p38 MAPK and increases the expression of telomere protective genes in cardiac muscle DOI: 10.1113/EP086189
Link to paper http://onlinelibrary.wiley.com/doi/10.1113/EP086189/full
2. Experimental Physiology publishes translation and integration of research, specifically manuscripts that deal with both physiological and pathophysiological questions that investigate gene/protein function using molecular, cellular and whole animal approaches. http://ep.physoc.org
3. The Physiological Society brings together over 3,500 scientists from over 60 countries. The Society promotes physiology with the public and parliament alike. It supports physiologists by organising world-class conferences and offering grants for research and also publishes the latest developments in the field in its three leading scientific journals, The Journal of Physiology, Experimental Physiology and Physiological Reports. http://www.physoc.org
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UT Southwestern Medical Center