نتایج جستجو برای: secular trend
تعداد نتایج: 129534 فیلتر نتایج به سال:
OBJECTIVE Assessment of short stature in many instances is based on a comparison with the Centers for Disease Control's (CDC) growth curves. The secular trend for height may limit the utility of CDC data for contemporary populations. We investigate the effect of the secular trend on Australian and US populations. DESIGN Describe CDC-defined height SDS distributions of contemporary populations...
The concept of morphological optimization tends to give a answers to the questions on what makes the elite sportsmen successful. This is the reason that all those who professionally perform selection in sport must know in detail conceptual and methodological problems associated with defining morphological taxons. For selective procedures, the zone from the population which encompasses selective...
The secular changes of height and body mass of girls and boys in the Bydgoszcz region in the period between 1935 and 1991 have been presented in this paper. Over the period of 56 years changes of the traits under investigation showed periodical diversification. Between 1935-1946 a regress was observed, between 1952 and 1971 the greatest average secular changes took place, the years from 1972 to...
Growth and body height have always been topics interesting to the public. In particular, the stupendous increase of some 15-19cm in final adult height during the last 150 years in most European countries (the "secular trend"), the concomitant changes in body and head proportions, the tendency towards early onset of sexual maturation, the changes in the age when final height is being reached, an...
Effect of Energy Under-Reporting on Secular Trends of Dietary Patterns in a Mediterranean Population
BACKGROUND Diet is an important factor in the prevention of chronic diseases. Analysis of secular trends of dietary patterns can be biased by energy under-reporting. Therefore, the objective of the present study was to analyse the impact of energy under-reporting on dietary patterns and secular trends in dietary patterns defined by cluster analysis. DESIGN AND METHODS Two cross-sectional popu...
OBJECTIVE This study aimed to evaluate the mean age of menarche, its secular trend in Korean women, and the relationship between malocclusion and the rate of skeletal maturation, as defined by menarcheal age. METHODS We retrospectively collected data on menarcheal age from 931 Korean women born during 1961 - 1997. Subjects were divided by the malocclusion type and birth-year decade into 3 and...
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