Interrelationship of the Age at Peak Velocity between Height, Chest Girth and Weight Growth in Japanese.
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概要
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Longitudinal growth of height, chest girth and weight was examined in 358 boys and 400 girls born during 1961-1969 and raised in Tokyo. The data consist of two series: Data K (234 boys and 252 girls) assembled by the present authors and Data T (124 boys and 148 girls) by TAKEI (1980). The age at peak velocity (PV age) was calculated for each item of measurement by the individual, and their interrelation of the items was examined. In girls, the menarchial age was also referred to.(1) In average, adolescent spurt occurred first in height, followed by chest girth, and finally weight. Menarche occurred in average at 1.3 years later than the PV age of height (Table 1).(2) The Correlation coefficient of the PV ages was the largest (greater than 0.7) between height and weight, next between weight and chest girth, and smallest between height and chest girth. As for the menarchial age, the PV age of height correlated highly, weight the next, and chest girth correlated the lowest (Table 2).(3) For a detailed analysis of the individual growth pattern, personal time intervals between the PV ages of the three items were calculated to obtain incidence according to 1 year divisions (Tables 3-5). In about 70% of the examinees of both sexes, the chest girth-growth spurt occurred within + 1 year of the height-growth spurt: the examinees passed through adolescence without marked fluctuation of their body type. The incidence of weight-growth spurt occurring one or more years later than height-growth spurt was found to be three times greater in the girls than in the boys. The chest girth-growth spurt occurred closely before and after the weight spurt in a large number of boys and girls.(4) In the majority of the girls, menarche occurred behind the growth spurt of all three items of measurement (Tables 6 and 7).(5) It was an average trend that, in boys, adolescent growth of height and weight first accelerated in step, then was followed by that of girth, while in girls adolescent growth of height first accelerated, then was followed by weight and girth in step. However, the non-abnormal appearance of a few exceptions to the average trend must be taken into consideration in the analysis of the individual patterns of adolescent growth (Tables 4 and 5).
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日本人類学会 | 論文
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