Power vs Endurance Predisposition
Your muscle-fiber distribution has already voted. Training in harmony with the majority vote produces faster, more enjoyable gains. Fighting it just produces frustration and slower progress.
What this measures
How your DNA shapes power vs endurance predisposition.
The trade-off between power and endurance is wired into fiber-type biology and the broader aerobic-anaerobic gene set. ACTN3 (fast-twitch performance) and ACE I/D (oxygen delivery efficiency) sit at the center. Carriers of "power-dominant" combinations tend toward sprint and strength dominance; carriers of "endurance-dominant" combinations tend toward sustained-effort dominance.
Carriers of ACTN3 RR + ACE DD genotype are associated with the power-dominant pattern — strong sprint performance, high peak force, faster but less sustainable efforts. Carriers of ACTN3 XX + ACE II genotype are associated with the endurance-dominant pattern. Mixed genotypes (most clients) produce intermediate patterns that lean one way or the other but respond to training in both directions.
Sport selection is the biggest practical lever: distance running, cycling, and triathlon reward endurance-dominant variants; sprinting, weightlifting, jumps, and team sports rich in repeated short bursts reward power-dominant variants. Training time invested toward the variant pattern compounds faster than training time spent against it. Both phenotypes can train both qualities, just with different starting points and different responses.
Most athletes aren't told their wiring leans one direction or the other — they discover it through which sports felt natural and which felt like fighting their body. Which ACTN3/ACE combination you carry decides which direction the wiring actually rewards — and whether your past sport gravitations were preference or biology.
Power vs Endurance Predisposition 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.
In your report
Where Power vs Endurance Predisposition lives inside your Genomic Lifestyle Optimization Report.
Power vs Endurance Predisposition renders as a dark-background card with a color marker calibrated to your specific variants. The card opens with the gene mechanism, shows your result at a glance via that marker, and closes with a practical, mechanism-led recommendation — what to eat, what to time, what cofactors to support.
Want to see what a real Mosaic dark card looks like? Walk through a sample report →
Questions people ask
About Power vs Endurance Predisposition.
- How does my DNA influence power vs endurance predisposition?
- Power vs. endurance, fast vs. slow recovery, injury susceptibility — encoded in ACTN3 (the sprinter gene), ACE (aerobic capacity), COL5A1 (tendon/ligament structure), VEGF (oxygen delivery), and the inflammation-response network. Sport science gets specific when it's informed by your variants.
- What kind of test do I need to see my Power vs Endurance Predisposition result?
- Whole-genome sequencing at 30× clinical depth. Consumer SNP-chip tests like 23andMe or AncestryDNA only read ~0.02% of your DNA and miss most of the variants this analysis needs. Mosaic reads all 3 billion base pairs and produces the full 108-insight report.
- How is Power vs Endurance Predisposition different from clinical lab testing?
- Clinical labs measure downstream biomarkers — blood levels, hormone values, metabolic byproducts — at a single point in time. Genomic insights like Power vs Endurance Predisposition reveal the underlying variant that shapes the biology, which is constant for life. The two are complementary: labs show the current snapshot; genomics shows the long-term tendency and where lifestyle leverage is highest.
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One test. 108 personalized findings. All yours.
Order your Mosaic kit. Receive your raw genomic data and the full Genomic Lifestyle Optimization Report in 15–20 days.