Risks and limits of Sportgene Check

A Sportgene Check (DNA-based sports test) claims to identify genetic predispositions for endurance, strength, recovery, or injury risk. However, the scientific basis is weak: most analyzed SNPs have small effect sizes and explain only a fraction of individual performance. Environment, training, nutrition, and motivation play a much larger role. Moreover, in Germany such tests fall under the Genetic Diagnostics Act (GenDG) – they are not approved as direct-to-consumer tests for medical or elite sports decisions. A key risk is false reassurance: someone labeled a 'sprinter type' might neglect other training modalities. Injury risk scores (e.g., collagen genes) are not sufficiently validated to alter training plans. Conclusion: the benefit is limited, the risk of misinterpretation high. A Sportgene Check should be seen as supplementary curiosity, not a basis for training decisions.