Hi
Most of the Filippino empty hands from the direct translation of weapon movements.In the southern part of philippines(Mindanao) there are some silat styles ,which teaches the empty hands first.
Yaw-Yan is very famous in Philippines.Although it's commonly known as a kickboxing system ,there is a combat version of that art too.They define their art as arnis without sticks.They are heavily conditioned and contains a lot of unorthodox punches and kicks.If you want more information ,plz check these out
www.yawyan.comwww.yawyanpasay.blogspot.comwww.yaw-yan.comAlso look for 'Dumpag' the unarmed version of Pekiti Tirsia Kali ,which is based on striking ,combat grappling and ground fighting.
Thanks