A repeated measures design was used to test subjects with the SWASH (SW) and with no SWASH (NS). The orthoses were fitted by a certified orthotist. Children wore the SWASH at home, during therapy, or at school for at least one week prior to testing. The SWASH was worn for a mean of 2.7 hours (sd = 1.9)/day during the week prior to data collection. Subjects were randomly assigned to be evaluated in the SW or NS condition first. SEMG data were collected bilaterally while subjects were sitting and standing for 10 seconds and while walking 20 feet. Comparisons of sitting and standing data were made between the SW and NS conditions for the middle five seconds. Walking trials required a minimum of four steps at self-selected speeds. SEMG data amplitudes were normalized to a percentage of each child's maximum functional contraction (%MFC) during standing, walking, or sitting. The MFC values were the maximum integrated SEMG amplitude during a 10 ms window of rectified and smoothed (RMS 50) data. Group %MFC integrated SEMG mean amplitudes were compared between the two conditions (SW/NS) for the two muscles (hip ADD and ABD) for the sitting, standing, and walking tasks. Group co-contraction index and ratio (ABD to ADD) scores were compared between SW and NS conditions for walking data. Individual walking data were compared within subjects using point by point %MFC integrated SEMG amplitudes. All comparisons were completed using the Wilcoxin Sign Ranks test due to skewed data distributions.