Exericse and Positive DNA Change
The 9:30am class Saturday will be doing CrossFit Open workout 12.3 – Must be warmed up and ready to begin by 9:45am! Regular classes at 8:30 and 10:30.
Kurt and Sarah’s son, Colton, already has some good fitness genes.
Check out this article from Time that summarizes a study that showed how exercise positively alters our DNA. We’ve known for some time that exercise can reduce the “aging” of DNA, but this study was interesting in showing how acutely our our cells “turn on” genes that allow our muscles to adapt to exercise. Thanks to Bill G-R for the heads up on the article.
From the Article:
Exercise does a lot of good things — it burns calories, helps keep your weight in check and lowers your risk of heart disease, stroke and diabetes. Now add one more thing to the list: physical activity can change your DNA. Unlike the aberrations and genetic mutations caused by carcinogens and toxins, exercise-induced alterations to DNA are more like tune-ups, helping muscles to work better and more efficiently. What’s more, these changes occur even after a single 20-minute workout.
Using the biopsied samples, researchers compared the activity in a series of muscle-related genes before and after exercise. More genes were turned on in the cells taken after the exercise and the participants’ DNA showed less methylation, a molecular process in which chemicals called methyl groups settle on the DNA and limit the cell’s ability to access, or switch on, certain genes. By controlling how much methylation goes on in certain cells at specific times, the body regulates which genes in the DNA are activated — that’s what differentiates the development of an an eye cell, for example, from that of a liver cell.
Methylation also helps to prime muscle cells for a bout of exercise, getting them to pump out the right enzymes and nutrients the muscle needs to get energy and burn calories while you’re pounding the pavement during that mile-long jog. “We are trying to get at the early messages that the muscle is [receiving in order] to say, ‘Something is happening here, we need to coordinate so we can get more enzymes and more machinery on board so we can cope with the demands of this exercise,’” says Zierath.
Legitness of the Week
- Criselda and Boie hit their first handstand hold on the wall!
A.) Push Press
B.) Weighted Pullup
2012 CrossFit Open WOD 12.3
As many rounds as possible in 18 minutes of:
15 Box jumps
12 Push Press 115#/75#
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