In the online documentation you can read this information about the stats of female players in the World Tour:
In the World Tour, women have their power & their speed lowered of 25 points compared to the men. For example, if a woman has a forehand power of 75%, then she'll strike the ball as strongly as a man with a forehand power of 50%.
How does it works exactly?
How can I translate it to female characters in the training club?.