Fig. 5

Individual example. Adolescent participant walking a in the Andago and b on the treadmill. Stride-to-stride variability of the stride time between a and b is shown in (c; red for the Andago, orange for the treadmill). Variability over 30 strides in hip-knee inter-joint coordination (d and f) and (e) muscle activity of the M. Gluteus Medius. The participant and his parents provided (written) consent for publication