n = 28; female, n = 12) there were no significant
differences in the spatiotemporal parameters between
male and female subjects. The overall mean
and standard deviation of angular excursions for the
subjects along with one standard deviation envelope
are shown in Figs. 3-5. The limb rotation angles
are the average of nine cycles from each of the
40 subjects (total of 360 gait cycles). Zero percent
corresponds to the heel strike and 100% corresponds
to the next heel strike of the same limb. The
percent standard deviations for the flexionextension
motion at the hip, knee, and ankle were
smaller than those for the ab-/adduction or internal
and external rotations. The joint angle data also
were further divided according to sex. Except for
hip ab-/adduction, there were no significant differences
between the male and female groups for any
of the joint angle patterns.