10 years ago, we knew that in order to encourage women and girls to participate and excel in sport, we needed to give them female only spaces, female role models, female focussed coaching so they look around and feel like they belonged there and were not measured against men, either by men, by the coaches or by themselves.
There are many situations where mixed sports, mixed activities and mixed trainings are great.. but to encourage more women and girls to take part in sport, to stay in sport and to believe in themselves, women only spaces help.
I live in Switzerland. Junior football has always been a mixed sport. 10 years ago, when asked if girls could play, the answer from all clubs near me, was yes.. girls are very welcome, and if they wish, they can play in the age group below... we do not have enough girls for their own teams / leagues.
The result was a very small number of incredibly motivated girls who endured being ignored at training by their team mates and subjected to physical abuse on the pitch by players and verbal abuse from opposition parents, they were often scattered between teams because no one wanted more than one girl on their team.
It took some very determined parents and coaches to push hard for all girls teams, often falling out with club management, moving between clubs, gathering momemtum, carving out time on pitches, registration in leagues, often getting beaten every week, and now girls / women's football is growing.