Showing papers by "Gaston Beunen published in 1990"
TL;DR: In order to predict performance in adulthood from measures during adolescence, the following hypothesis is suggested: the best results at adulthood are obtained by those men who were already good performers during adolescence and who were late maturers, while the worst results are obtained during adolescence who were early maturers.
Abstract: Relationships between motor performance, as measured by various fitness tests, and age at peak height velocity have been studied in a sample of 173 Flemish boys, measured yearly between +/- 13 and +/- 18 years and again as adults at 30 years of age. In addition to correlation studies, comparisons were made between boys with an early, average and late age at peak height velocity. To summarize the successive measurements during adolescence, a longitudinal principal component analysis was carried out. The first component can be interpreted as an average percentile level component. During adolescence, three performance tasks, namely speed of limb movement, explosive strength and static strength, are negatively related to age at peak height velocity; thus early maturers performed significantly better than late maturers. However, between late adolescence and adulthood, a cross-over of the average distance curves between 18 and 30 years of age was noted for almost all motor tasks. The late maturers not only caught up the early maturers, but there were significant differences for explosive strength and functional strength in favour of late maturers. In order to predict performance in adulthood from measures during adolescence, the following hypothesis is suggested: the best results at adulthood are obtained by those men who were already good performers during adolescence and who were late maturers, while the worst results are obtained by poor performers during adolescence who were early maturers.
104 citations
TL;DR: The skeletal maturation of youths from several other continental European countries corresponds more closely with the Belgian than with the British data, which probably provide suitable standards for youths of West-European countries.
Abstract: SummaryReference data for skeletal maturity (TW2 method) of the hand and wrist are provided for large representative samples of Belgian boys and girls. The sample of Belgian boys consisted of 21 174 boys aged 12 to 20 years studied in a nationwide cross-sectional and longitudinal study on the physical fitness of secondary schoolboys (1969–1974). The girls' sample consisted of 9698 6–19-year-old Flemish girls studied cross-sectionally (1979–1980). Both samples were multi-stage stratified cluster samples of entire school classes. All skeletal maturity assessments of the boys were made by the same observer (GB). His estimations agreed quite closely with those of the originators of the method. The skeletal age assessments of the girls were made by two observers trained by GB. Both observers showed high intra-observer reliability after training, and during the assessments. Moreover their ratings compared favourably with those of GB and the originators of the method.Smoothed percentile curves of the maturity sc...
75 citations
TL;DR: In this paper, the Kinanthropometry: Roots, developments and future is discussed. But it is not discussed in this paper, as it is in the present paper, with the same authors.
Abstract: (1990). Kinanthropometry: Roots, developments and future. Journal of Sports Sciences: Vol. 8, No. 1, pp. 1-15.
34 citations