08/27/2024
ACTN3 XX
ACTN3 XX Genotype and Running Performance
In the context of MLS football players, the ACTN3 XX genotype might negatively affect running performance, particularly in activities requiring explosive power, such as sprinting or rapid changes in direction. Players with the XX genotype may have a lower proportion of fast-twitch muscle fibers, which are crucial for high-intensity, short-duration activities. This could result in reduced sprinting speed and less effective performance in explosive movements, potentially putting them at a disadvantage in specific game scenarios.