Ortopedická protetika Praha sro - Společnost pro pojivové tkáně

height velocity of body height. The total
length of the PS of sitting height in girls
lasted 3.7 years and its average increment
amounted to 11.0 cm.
Intersexual difference
The velocity curve of sitting height
displays an analogous course of development
in both spurts and both sexes. The
peak of MGS was reached at the same
age (T3 = 7.1 years). Owing to a steeper
deceleration phase and a lesser decrease
of growth velocity girls on average begin
their PS of sitting height about 1.5 years
interval of deviation division
1,1
1,0
0,9
0,8
0,7
0,6
0,5
0,4
0,3
0,2
0,1
0,0
186
Boys
earlier than boys. The acceleration phase
of PS is steeper and remarkably longer in
boys. The difference in reaching maximum
growth velocity of PS (T8) is 2 years.
Subischial length – Boys
(Table 4a, Figure 4a)
Boys reached the maximum average velocity
in MGS at the age of 8.2 years (T3), i.e.
precisely 1 year after reaching the peak of
MGS of sitting height and 0.7 year after reaching
the peak of body height. The point of
average minimal velocity before PS (T6) was
reached at the age of 10.2 years and the cul-
TV-VVS AZDAZ VVS TV
-0,1
6 7 8 9 10 11 12 13 14 15 16
age [years]
Figure 6a: Comparation of growth dynamics of linear traits – boys
LOCOMOTOR SYSTEM vol. 14, 2007, No. 3+4