When is Sportgene Training actually useful?

Based on the provided context, there is no direct information about 'Sportgene Training'. In general, genetic tests marketed for sports performance (e.g., ACTN3, ACE variants) have small effect sizes and are polygenic. Their practical utility for training optimization is limited because lifestyle factors dominate. Evidence is mostly marketing-driven; few tests are clinically validated. Such testing may be useful only in research settings or when combined with comprehensive sports medicine assessment. For recreational athletes, the current evidence does not support routine use.