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IMG_NEW_0044 - III Growth In Heieht and Weieht 1r.rr t A...

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III. Growth In Heieht and Weieht A. Growth Curves - 1r.'.rr t_ i Distance curve - measurements taken at intervals are plotted against time to produce a graph ofprogress. Velocity curve - increments in the rate of growth with time. are plotted against time to show the variation in ) ' 'l ili , ,r,t 2 Longitudinal data - growth curve is derived from a single individual or from repeated /\ measurements on the same goup of individuals over a period of many years. _/ \r_ . Cross-sectional data - measurements are made of several children in each age group, urd,*""u tJt these are then combined to form a cross-sectional picture of the various age groups in the community at the time of the investigation. B. Growth In Height Growth is a regular process, it doesn't proceed by stops and starts. Flom birth !o maturity. the most important difference between boys and girls is in the rate of maturity. Girls goy !]p- fa_stpf tha.4_b-pys - they reach 50 percent of their adult height at an earlier age (1.75 vs. 2.0 years), enter puberty earlier, and cease growing earlier. Half way through the foetal period, the skeleton is already three
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