Postural asymmetries were present in adults at all
GMFCS level, but more frequent at lower levels of motor
function and varied in different positions. Normally a
standing position requires more postural ability, and those
at GMFCS level I to III demonstrated more asymmetries
in standing compared to sitting and supine lying. However
the reverse was seen at GMFCS level V with a higher proportion
of postural asymmetries in supine and sitting compared
to supported standing, indicating a lack of postural
support while lying and sitting.