The R577X variant in ACTN3 is the best-studied performance gene. It determines whether fast-twitch muscle fibers express alpha-actinin-3, a protein found exclusively in speed/power athletes. The XX genotype (null) predisposes to endurance; RR/RX to power and sprint performance.
ACE I/D polymorphism associates with aerobic performance and altitude adaptation — the I allele (insertion) with endurance efficiency, D with power sports. PPARGC1A is the master regulator of mitochondrial biogenesis and aerobic adaptation rate.
IL6 and CRP variants govern inflammatory response to training load — determining recovery time requirements and injury risk under high-volume programs. SOD2 antioxidant capacity affects oxidative stress accumulation and long-term tissue resilience.
COL5A1 encodes a component of type V collagen. The TT genotype associates with Achilles tendon injury risk and reduced tendon compliance under load. Combined with training volume data, this variant informs injury prevention protocols for endurance athletes.
The AMPD1 variant affects purine nucleotide metabolism in muscle — influencing fatigue onset, ATP regeneration efficiency, and high-intensity interval performance. Athletes with the Q variant often report faster performance improvement with targeted protocols.
The Val158Met polymorphism in COMT determines dopamine clearance rate in the prefrontal cortex — the "warrior vs worrier" phenotype. Under competitive pressure, this variant influences working memory, decision-making, and stress-related performance degradation.
A structured recommendation for optimal training emphasis — power, endurance, or mixed — based on muscle fiber composition genetics, aerobic efficiency variants, and metabolic profile. Evidence-graded and directly actionable.
Recovery window recommendations based on inflammatory response genetics, oxidative stress capacity, and sleep quality variants. Not generic 48-hour recovery windows — actual genetic context for load management decisions.
Sport-specific nutritional genetics: carbohydrate oxidation efficiency, caffeine pharmacokinetics, iron absorption, and omega-3 conversion. Fueling strategies matched to the metabolic genotype, not population averages.
Connective tissue and structural resilience variants — informing warm-up protocols, load progression rates, and preventive supplementation. The genomic context that makes injury prevention programming evidence-based rather than precautionary.
Whether you're building a training app, a performance platform, or a sports nutrition product — let's discuss how genomic intelligence integrates into your user experience.