highly significantP = 0.006
For the VO 2 swim adjusted for a mean body mass, the effect of Sex was not significant ( F 1,567 = 0.04, P = 0.87), but line Type × Sex interaction was highly significant (F 1,525 = 7.7, P = 0.006): in A lines VO2swim was higher in females than in males (Tukey–Kramer: t 243 = 2.6, P = 0.04), whereas in C lines the difference was reversed, although not significant ( t 681 = –1.6, P = 0.36, Table. 1 ).