  ![**Functional alignment of markers in *pirouette en dehors* performed by a professional ballet dancer**. The standard Vicon Plug-in Gait marker notations are used (reproduced with permission from Volchenkov and Bläsing, [@B00]).](fncom-00-00000-g0000){#F0}  ![**Functional alignment of markers in *pirouette en dehors* performed by a 