Can NutriCare | INFINITY DNA-Test help with Sport?

The NutriCare | INFINITY DNA Test is marketed as a comprehensive DNA test for nutrition and sport. However, the scientific basis for direct sport recommendations from single genetic variants is weak. While GWAS studies have identified associations between certain SNPs (e.g., ACTN3, PPARGC1A) and muscle fiber type or endurance, the effect sizes are small and often not reproducible. Moreover, most of these tests lack clinical validation and overstate practical relevance. A DNA test may provide a rough indication, but it cannot replace individual performance diagnostics or coaching by professionals. The evidence is best described as 'marketing' or 'mixed'. For serious athletic optimization, proven methods like lactate testing, heart rate variability, and experienced coaches are far more reliable.