When is Sportgene Alltag actually useful?

When is a sports gene test actually useful in everyday life? From a scientific perspective, the answer is cautious. Most direct-to-consumer DNA tests for athletic performance analyze single variants like ACTN3 or ACE, but their effect sizes are small and easily overshadowed by training, nutrition, and recovery. GWAS studies show that polygenic traits such as vertical jump or sprint speed cannot be predicted by a single marker. The evidence for personalized training based on such tests is weak, and manufacturers often overstate the benefits. A potential use could be motivational: if the results encourage more physical activity, they may have indirect value. However, they should not guide serious athletic decisions or medical advice. For children and adolescents, extra caution is needed due to the risk of misinterpretation. In summary, sports gene tests are at best a fun extra, not a reliable tool for everyday life.