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Genetic testing is currently available for a variety of reasons, from prenatal testing for congenital conditions to verification of a blood relationship. A new use, testing for “sport performance genes,” has hit the marketplace and is becoming popular with parents who envision athletic prowess in their children’s future.
The alpha actinin-3 gene (ACTN3), named the “speed gene,” produces a protein that stabilizes sarcomeres during the contraction of fast-twitch fibers used in intense bursts …
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