Females had a little larger muscle fibre cross-sectional
area than castrates, but the difference was not significant (pN0.05)
in line with Miller, Garwood, and Judge (1975) and Ruusunen and
Puolanne (2005). Other researchers have reached contradictory
results or have not found any difference in muscle fibre size between
the genders (e.g. Bee, 2004).