[Secular trends in anthropometrical measurements observed in three to 11-year-old French children between 1953 and 2005].
This study covers a fifty-year period between 1953 and 2005 and looks at secular trends in stature, weight and sitting height sizes among French boys and girls between the ages of 3 and 11. A special modelling in function to the age and variable for each child was established so that a comparison could be made in the kinetic growth patterns over these same two periods. Statistical analysis shows a significant increase in growth, of 0.8cm per decade in stature, characterised by a certain increase in the lower limbs and the weight (0.8kg per decade) together with a proportional increase on the body mass index. Positive secular trends of this anthropometric nature are generally thanks to improved eating and sanitary habits and this study enables us to build and elaborate new standards in growth patterns essential for monitoring auxological development in 3 to 11-year-old children in the years 2000 and onwards.
[Show abstract] [Hide abstract] ABSTRACT: The aim of this study was to look for any secular trend in the stature of Balkan populations from the time of World War II (1939–1945) to the Balkans War (1991–1995). The research was based on the examination of exhumed skeletons of 202 men killed in World War II in the area of the Republic of Slovenia, and 243 men killed in the Bosnian War in Bosnia and Herzegovina. The length measurements of the right and left humerus, femur, tibia and fibula were taken. Since the results revealed no significant differences and the left-sided bones were more complete and recurrent in the sample, the bones of the left side were used in the analysis. Since the increase in height depends mostly on the increase in length of the long bones, with an average absolute change of about 0.28 cm for humerus, 0.55 cm for femur, 0.49 cm for tibia and 0.20 cm for fibula per decade in our case, these results suggest a significant increase of the height of the Balkans population. The difference of the sum of the average femur and tibia length for the study period was 4.13 cm. Recalculated average length increase of the sum length of femur and tibia per decade was 0.88 cm for the left side. Our study revealed that there was a trend towards increased long bone lengths, at least in the male population analyzed.0Comments 1Citation
- "With the length of the leg bones being the best indicator of a person' s height , the increase in the length of femur and tibia allowed the estimation of the increase in height and secular trend for the investigated period. Namely, statistical analysis showed a signifi cant increase in growth of French children (0.8 cm per decade in stature), characterized by increased length of the lower limbs . An overall positive secular trend in height was recorded in urban China between 1985 and 2010, with the average rate being 2.4 cm and 1.7 cm per decade for boys and girls, respectively. "
- [Show abstract] [Hide abstract] ABSTRACT: Abstract Objective. To test if secular growth acceleration occurs during fetal life. Methods. ANOVA Kruskal-Wallis and Mann-Whitney U test have been used for the biometric characteristics comparison of nowadays fetal population with those three decades ago and to test the hypothesis about the existence of secular growth acceleration during fetal life. For this purpose we first calculated mean values of particular biometric parameters for the whole pregnancy. During the period 2002-2009 biparietal diameter, fetal length and abdominal circumference measurements in singleton uncomplicated pregnancies between 22 and 41 gestational weeks were obtained. Gestational age was estimated according to Naegele's rule and confirmed with an early ultrasound examination. Pregnancies with fetal cromosomopathies and malformations were excluded as well as those resulting in perinatal death. Results. There were no statistically significant differences of the examined fetal biometric parameters measured by ultrasound between contemporary fetal population and those from 35 years ago. Conclusion. Our investigation did not undoubtedly prove that significant changes of fetal biometric parameters occurred in the last three decades. It is possible that secular growth acceleration does not exist in prenatal period but also the observed time period could have been to short for this phenomenon to manifest.0Comments 0Citations
- [Show abstract] [Hide abstract] ABSTRACT: Mean Age At Menarche In France Decreased From 12.78 Years In 1979 To 12.6 Years In 1994.The Aim Of This Study Was To Determine Mean Age At First Menstruation In Young French Adolescent Girls In Order To Study The Secular Trend. Age At First Menstruation Was Noted To The Nearest Month During Recording Of Anthropometric Measurements In Three Secondary Schools In The Aisne Administrative Department, France, In Classes In Years 7, 8, 9 And 10. A Total Of 339 Girls Aged 11 To 15 And A Half Years Were Examined. The Majority Were From A Social Background Of Workers, Employees And Middle Managerial Staff. Mean Age At First Menses And Standard Deviation Were Calculated Using The Probits Method. In Our Survey, Mean Age Was 12.5 ± 0.08 Years (X(2) Γ =14 = 16.7, P>0.05), Indicating That It Had Remained Stable For More Than 15 Years. A Secular Decline Has Already Been Observed In Belgium, Britain, Hungary, Scandinavia And The United States. In All These Countries, Age At Menarche Has Reached A Stable Level At Around 13 ± 0.5 Years.0Comments 3Citations