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image showing power lifters who were likely to have the ACTN3 functional polymorphism

ACTN3 Gene: Deficiency and Muscle Type

The ACTN3 gene codes for actinin alpha-3, a protein found in fast-twitch muscles. Some people don’t produce this protein, which changes the composition of their muscles. Elite athletes may be limited by this genetic change.

Tendinitis Genes

Do you have problems with your tennis elbow, rotator cuff, knees, or Achilles tendon? Discover how your genes influence the risk of having tendon problems.

PPAR-Delta: Burning off the Fat

PPARδ is a key player in how and when your muscles burn fat for fuel. Genetic variants in the PPARD gene impact how well your muscles utilize fatty acids. These variants also impact how much of a fat-burning benefit you get from exercise.

Exercise Report

Utilize our Athletics Summary Reports with your 23andMe or AncestryDNA genetic data to see which articles may be most relevant to you. These summaries are attempting to distill the complex information down into just a few words. Please see the linked articles for details and complete references. (Member’s article)

Motivation to exercise? It’s genetic.

A study in the journal Behavioral Brain Research paints a fascinating picture of why some people are more motivated to exercise. The study looked at the dopaminergic system to see how people’s genetic variants could alter the ‘reinforcing value’ of exercise.

Athletic Performance Genes

Genes control the formation, composition, and type of muscle fiber. Learn how to optimize your training when genetics comes into play, affecting muscle composition and endurance.