I would be looking at the sign Mars is in moreso than whether or not it is retrograde. --Mars in Pisces and in general water signs gives fluidity of movements.
--Mars in air signs can give aeriness and lightness of movements. People who can leap to great heights when dancing.
--Mars in earth signs can give precision and excellence in choreographed well rehearsed movements.
--Mars in fire sign can give impulsiveness and explosiveness in movements. Mars in Aries does well with dances that mimic fighting.
Mars retro is still Mars. Could do well in dances that are choppy, controlled, restrained; there are many modern dance styles that are suitable for Mars retro.
ETA: I would also pay attention to the ascendant when it comes to movement. I am Pisces rising, and even though I have Mars in Virgo, I prefer fluid movements and freeform dancing and I hate practicing dance routines. Therefore my ascendant supersedes my Mars when it comes to movements.