Growth: relationship between height and lung volume changes
Body
proportions change from birth to the end of the adolescent
growth spurt (ref. 1).
On this account regression equations for lung volumes,
even after logarithmic transformation,
are not entirely satisfactory for the age range from early
childhood to early adulthood.
In
Europe, the prediction equations used most often are probably
those of Zapletal, and in the United States of America
those of Polgar (ref. 2).
Neither is quite satisfactory over the entire 6-18 yr
age range, which can be demonstrated by findings in 1189
Dutch boys and girls. In both boys and girls predicted
values are systematically too high, and somewhat too low
at about the start of the adolescent growth spurt with
either of these popular sets of prediction equations.
The trend cannot be remedied by modifying the constants
in the respective equations; it is due to the fact that
only standing height is taken into account in these models.
It would seem that in one way or another account should
also be taken of age or sexual maturity (ref. 2).
See also:
Reference values for adults
SpirXpert software