At the Michigan Challenge Balloonfest Demonstrations in the past couple years, we have had Adult fencing, rapier, rapier, demonstrated, as well as the adult Armored or Heavy demonstrations. The SCA has fighting for both adults and youth. The regulations vary from Kingdom to Kingdom. The common rule is as always - Safety First!
For information on the web, you can go to the Kingdom's website http://www.midrealm.org/marshal/, the SCA's website http://sca.org/chivarts.html, or on women fighters in the SCA http://swordmaiden.com/