Fig. 6
Sitting balance before and after training. a. Trajectories of the centre of pressure from the force platform during the test of limits of stability for 2 participants before and after training. The participants leaned in each of 8 directions with simultaneous visual feedback of the instantaneous centre of pressure and the targets at the perimeter of a circle. b. Trajectories of the centre of pressure from the same two participants during the test of quiet sitting with eyes closed. c. Group data showing the change in limits of stability before (Before), in the middle of (Mid), and at the end of training (After) for the 8 people with complete sets of data. The score in cm is the sum of the maximum fore-aft and medial-lateral excursion, with higher numbers indicating an improvement. Uninjured 51 ± 5 cm (n = 7; age = 35 ± 15 years, not shown). d. Group data showing the change in sway speed at the same time points as in c. Lower numbers indicate an improvement. Filled circles represent the individuals with motor incomplete injuries. The horizontal dashed line in d. indicates the mean sway speed for the uninjured participants (n = 7; age 35 ± 15 years)