867983.fig.002a
(a)
867983.fig.002b
(b)
Figure 2: Relative motion index (RMI) was defined as the amount of hip lateral rotation angular motion completed prior to the start of lumbopelvic rotation. The vertical lines indicate the start of hip lateral rotation and lumbopelvic rotation. (a) An example of a smaller RMI. (b) An example of a larger RMI.