Gene Explorer / ACTN3
ACTN3
TraitSportsModerate evidenceBackground
Your muscle fiber type skews toward power or endurance.
ACTN3 influences fast-twitch muscle fibers. One common variant is more typical in sprinters and power athletes; another pattern shows up more in endurance athletes. Neither decides your fitness - training still dominates - but it is a fun read on how you are built.
Also known as: sprinter gene, alpha-actinin-3
Associated with
- muscle
- sprint
- endurance
- athlete
- fitness
Educational only. Significant findings should be reviewed with a clinician.
Educational reference only — not a diagnosis. Discuss significant findings with a clinician.