Original paper
Analysis of Japanese Preadolescent Growth
Kanda, S.; Hatayama, A.
Zeitschrift für Morphologie und Anthropologie Band 63 Heft 1 (1971), p. 1 - 10
9 references
published: Jul 3, 1971
ArtNo. ESP168006301000, Price: 19.00 €
Abstract
The cross-sectional studies of human growth were reported by many authors. That is reason why the collections of cross-sectional data were easier than those of longitudinal data. Moreover, effective methods for analysing the longitudinal data were not available up to present. The present report was studied by the applications of the factor analysis on longitudinal anthropometrical data and concluded that the shapes of individual growth curves were diagnosed by a single figure. The materials used were the annual records of the Japanese pupils in public schools, aged from 6 to 15 years. The four items i. e., stature, weight, chest girth and sitting hight were available for the analysis. The methods applied were the principal component analysis and the varimax rotation method. The two factors were extracted from each item, i. e., they have represented a decreasing and increasing factor loadings respectively. The individual factor scores were calculated on the two factors. The magnitudes of factor scores of two factors decided the levels and those of the increasing factor controlled on the convexities of individual growth curves. The sexual differences of the factor patterns and the similarities of patterns between stature and sitting hight or weight and chest girth were also presented.
Kurzfassung
Der longitudinal angelegten Untersuchung liegen die jährlichen Messungen von Körpergröße, Gewicht, Brustumfang und Stammlänge bei 144 japanischen Schülern beider Geschlechter im Alter von 6 bis 15 Jahren zugrunde. Die Meßdaten wurden mit Hilfe der Hauptachsenanalyse und anschließender Varimax-Rotation untersucht. Bei jeder Variablen wurden zwei Faktoren extrahiert und die individuellen Werte auf den Faktoren berechnet, aus denen sich Wachstumskurven gewinnen ließen. Es waren Geschlechtsdifferenzen in den Faktorenmustern nachweisbar. Zwischen Körpergröße und Sitzhöhe sowie zwischen Gewicht und Brustumfang können ähnliche Faktorenmuster festgestellt werden.
Keywords
human growth • anthropometrical • varimax rotation method • weight • chest girth • sex • school children • Japan