These shots are created by freezing the motion not by a high shutter speed but by controlling the duration in which the flashes are fired.
I'm using three flashes for these shots. One behind a sheet of shoot through paper using different colored gels and two flashes on each side of the glass.
The flashes are firing at 1/64 power. Equivalent to about 1/4000 of a second.
1/40-1/80 at f/13, iso 125
Camera: Canon 5D mark iii
Lens: EF 24-105mm f/4
Fashes: 2x 580EX ii and 1x 430EX ii
Radio Triggers: Photix Odin