Abstract
This study was made to investigate the relationship between the
growth of body height and the development of speed, change of
direction, explosiveness and quickness in girls from childhood to
adolescence. 2,552 active girls aged from 4- to 15-year-old were
tested in this study. Motor abilities that indicated speed, change
of direction, explosiveness and quickness were assessed with 20
m dash velocity, Pro Agility test velocity, standing long jump,
side steps, vertical jump and rebound jump index. To obtain the
allometric equation “y = bxa”, record of motor abilities was
plotted on a logarithmic graph along with body height. When
the transition point was not taken into account, the values of
coefficient “a” of the 20 m dash velocity, Pro Agility test velocity,
standing long jump, side steps, vertical jump and rebound
jump index were 0.923, 0.874, 1.619, 2.032, 1.598 and 1.921,
respectively. When the transition point was taken into account,
it was shown as a two-phase linear function with one transition
point in each measurement item. However, the value of coefficient
“a” up to the transition point exceeded value of coefficient “a”
from the transition point in all motor abilities. In addition, body
height at the transition point ranged from 122.1 cm to 128.3 cm.
Results of this study suggested that speed, change of direction,
explosiveness and quickness develop markedly up to a height of
about 125 cm, but later develop slowly.
