Table 3. VO_2peak changes (∆ VO_2peak, mL · kg^-1 · min^-1) according to the ACE I/D and the ACTN3 R577X genotypes between 15 and 19 year-old age groups of female (n =17) and male (n = 41) skiers. All data are presented as means (± SD).

	Young female skiers ∆ VO2 peak	Young male skiers ∆ VO2 peak
ACE I/D genotypes
II	2.0 (2.4) (n = 7)	5.3 (5.5) (n = 10)
ID	6.2 (5.7) (n = 5)	3.2 (5.0) (n = 26)
DD	3.3 (5.5) (n = 5)	5.0 (6.2) (n = 5)
ACTN3 R577X genotypes
RR	3.7 (2.6) (n = 5)	3.8 (4.8) (n = 16)
RX	3.7 (5.3) (n = 12)	3.4 (5.5) (n = 21)
XX	-	7.6 (4.8) (n = 4)