Martelo
The Martelo ( Portuguese for hammer) is a kick in the Brazilian fighting dance Capoeira . It is hit with the instep . You can do the kick from the front (port. De frente ), for this you have to take a short step forward with your back leg and then kick. But it can also be done from behind , directly, i.e. from the ginga position . It's stronger from the front, but more unexpected and surprising from behind.
The doleo in Tae-Kwon-Do is very similar to this .