ACTN3: Your ‘muscle type’ gene

When you look at a marathon runner next to a powerlifter, you can’t help but think that there must be a fundamental genetic difference between them. You could be right! At the most elite level, there sometimes is a genetic difference in the type of muscles in a marathon runner and a power athlete. And … Read more

Snips about SNPs: ACTN3 (muscle type gene)

The ACTN3 gene codes for a type of muscle fiber found in fast-twitch skeletal muscles. These are the muscle fibers that produce explosive, powerful contractions. Think Olympic sprinters and powerlifters… About 25% of Caucasians have a non-functioning ACTN3 genetic variant. If you carry this variant, it doesn’t mean that you can’t lift weights or run, … Read more