Table 3 Genotyping frequency in the Spanish population and elite endurance athletes
Symbol | Gene | Polymorphism | Genotypes (2 or 1 = “optimal” endurance genotype) | Frequency in Spanish population (%) (*) | Frequency in Spanish elite endurance athletes (%) |
|---|---|---|---|---|---|
CYP2D6 | Cytochrome P450 family 2 subfamily D member 6 | c.506-1G>A | 0 = AA–1 = GA–2 = GG | 4–27–69 | 1–14–85 |
GSTM1 | Glutathione S-transferase mu | Functional(+)/null(−) | 0 = −–1 = + | 82–18 | 71–29 |
GSTP | Glutathione S-transferase pi | Ile(I)105Val(V) | 0 = GG–1 = GA–2 = AA | 41–45–14 | 6–31–63 |
GSTT | Glutathione S-transferase tetha | Functional(+)/null(−) | 0 = −–1 = + | 64–36 | 28–72 |