Power Performance
Fast-twitch fiber percentage and neural firing rate determine explosive strength—how quickly you can generate force in a sprint, jump, or lift. Understanding your bias toward power or endurance lets you emphasize the right training instead of forcing square pegs into round holes.
What this measures
How your DNA shapes power performance.
Power output — the ability to generate force quickly — depends on fast-twitch fiber dominance, the rate of force development, and the energy systems that fuel explosive efforts. ACTN3 in fast-twitch fibers, AMPD1 (which handles ATP regeneration during high-power work), and IGF2 (associated with muscle mass) shape the power phenotype.
Carriers of the ACTN3 RR genotype are associated with stronger fast-twitch performance, faster sprint times, and higher peak power output. Carriers of the XX genotype are associated with less power potential but better endurance capacity. AMPD1 deficiency variants are associated with reduced ATP regeneration under high-power demand — and earlier muscle fatigue in explosive efforts.
Explosive training (sprints, plyometrics, Olympic lifts, heavy compound movements with intent) develops the rate-of-force-development side regardless of variant. Creatine supplementation provides a consistent ~5–10% boost in maximal power output across most variant patterns. Adequate protein, carbohydrate timing, and full recovery between explosive sessions matter more than total volume.
The athlete who jumps higher and sprints faster than their training suggests they should isn't lucky. Which ACTN3/AMPD1/IGF2 combination they carry decides where natural power capacity sits — and which training direction earns the strongest return.
Power Performance is one specific finding in this system. Your Genomic Lifestyle Optimization Report shows where your variants place you on the athletic performance spectrum — and what you can do about it: it renders as a dark card with a color marker calibrated to your variants, opening with the gene mechanism and closing with a practical, mechanism-led recommendation.
Want to see what a real Mosaic dark card looks like? Walk through a sample report →
In context
Power & Endurance: the 3-insight cluster.
Power Performance is one finding in a tightly-related cluster. Mosaic sequences the other 2 alongside it so you see the whole biology — not an isolated data point.
Questions people ask
About Power Performance.
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