THE DYNAMICS OF LINEAR GROWTH IN DISTANCE, VELOCITY AND ACCELERATION

被引:75
作者
GASSER, T
KNEIP, A
BINDING, A
PRADER, A
MOLINARI, L
机构
[1] UNIV HEIDELBERG, INST ANGEW MATH, W-6900 HEIDELBERG, GERMANY
[2] KINDERSPITAL, CH-8032 ZURICH, SWITZERLAND
[3] UNIV HEIDELBERG, SONDERFORSCHBEREICH 123, PROJECT B1, RES PROGRAMME, W-6900 HEIDELBERG, GERMANY
关键词
D O I
10.1080/03014469100001522
中图分类号
Q98 [人类学];
学科分类号
030303 ;
摘要
Growth of body, leg, trunk and arm length from birth to adulthood is studied in the subjects of the First Zurich Longitudinal Growth Study, using a recently developed technique, the 'structural average curve'. In this way truly longitudinal average curves are obtained for velocity, acceleration and distances, and various phases of growth are analysed not only graphically, but also by descriptive parameters in terms of timing, intensity and duration. These phases consist of the pubertal spurt (PS), the mid-growth spurt (MS) and growth in infancy. The overall pattern is the same in all variables studied: velocity drops sharply after birth, followed by a kink between 7 and 12 months, and a more gradual decrease until the MS, which peaks around 7 years. In girls the PS immediately follows the MS, while in boys a 'latency period' of approximately constant growth velocity precedes the PS, which occurs almost 2 years later, and is more intense than in girls. There are no appreciable sex differences in the MS, but the PS is later and more intense for boys, even when accounting for the smaller adult size of girls. When comparing linear variables the PS turns out to be earlier for the legs than for the trunk, whereas the trunk has an earlier MS. The trunk starts high in relative distance and in velocity after birth, whereas the legs have a high velocity throughout childhood. In adolescence the trunk again shows more intense growth. Surprisingly, the growth of the arms in many ways resembles more that of the trunk and not that of the legs.
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页码:187 / 205
页数:19
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