ABSTRACT
BACKGROUND: growth is a remarkable index of health and can be influenced by genetic and environment conditions. The pattern of growth is unique for every nation and worldwide studies have demonstrated separate national standards. In the case of Iran, there is not enough information in this field. METHODS: This study was undertaken on 7-12 years old children from Arak. The data for each individual such as age, height, weight and body mass index (BMI) were recorded. Differences in the data between two sexes were tested by means of the paired sample t- test and the mean BMI was compared with sex- and age-specific reference values from the National Center for Health Statistics of the Centers for Disease Control (CDC) 2000 growth chart using independent sample t-tests. Levels of P < 0.05, P < 0.01 and P < 0.001 were recorded as significant. RESULTS: In this study, males were significantly taller and heavier than females at the same age (P < or = 0.01) except for length at age 10 and weight at age 12. The BMI curves were between 50th and 25th percentiles of CDC. CONCLUSIONS: The present study shows the effect of socioeconomic background that had been also considered in other studies in Iran. There is a need for ethnic specific growth charts and BMI cut-off points for underweight, overweight and obesity in children of each ethnic subgroup of Iranian population.
Subject(s)
Growth Charts , Growth and Development/physiology , Nutritional Status/physiology , Sex Characteristics , Child , Female , Humans , Iran/epidemiology , Iran/ethnology , MaleABSTRACT
Anthropometric indices that are indicators of nutrition status in children and adults can be affected by racial and geographic factors. The aim of present study was to investigate the relation of skull size and brain volume of Arak University of Medical Sciences students with their age, weight, height and body mass index. The present study was a cross-sectional study on 18-26 years old students of Arak University of Medical Sciences (150 female and 136 male) in 2009-2010 educational year. Sampling methods were probability and multi-stage methods which were performed using students' educational file and interviewing the subjects. Questions regarding anthropometric data (height, weight, age, body mass index and skull index) were included in the personal questionnaires. Data was analyzed and evaluated statistically using SPSS statistical software. Mean height was 177.27+/-6.41 cm in males and was 166.61+/-5.35 cm in females. Mean weight of males was 73.33+/-9.11 kg and mean weight of females was 55.55+/-7.28. Mean BMI was 23.20+/-2.43 and 21.27+/-2.69 in males and females, respectively. Mean skull index was 1.99+/-0.26 in males and 2.20+/-0.3 in females. Mentioned data were significantly different between males and females. Also mean age of females was less than males. Positive relations were found between skull volume and height, weight, age and BMI in both sexes and this relation is stronger regarding BMI. The present study, supporting the other studies in this field, confirms the relation between skull index and body mass index and indicates the effect of race. Considering the studied population which are students of Arak University of Medical Sciences and are from different regions of the country, similarities between results of this study and studies from Iran and studies conducted in a special region reveals that factor of race is affected by geographical factors.
Los índices antropométricos que son indicadores del estado nutricional en niños y adultos pueden ser afectados por factores raciales y geográficos. El objetivo del presente estudio fue investigar la relación entre el tamaño del cráneo y el volumen del cerebro con la edad, peso, talla e índice de masa corporal en los estudiantes de la Universidad de Ciencias Médicas de Arak. Se realizó un estudio transversal en estudiantes de 18-26 años de edad en la Universidad de Ciencias Médicas de Arak (150 mujeres y 136 hombres) en el año educativo 2009-2010. Los métodos de muestreo fueron probabilidad y métodos de etapas múltiples que se llevaron a cabo utilizando el archivo escolar de los estudiantes y entrevista a los sujetos. Preguntas sobre los datos antropométricos (talla, peso, edad, índice de masa corporal y el índice del cráneo) se incluyeron en los cuestionarios personales. Los datos fueron analizados y evaluados estadísticamente mediante paquete estadístico SPSS. La altura promedio fue 177,27 +/- 6,41 cm en hombres y 166,61 +/- 5,35 cm en las mujeres. La media de peso de los hombres fue 73,33 +/- 9,11 kg y 55,55 +/- 7,28 de las mujeres. El IMC promedio fue 23,20 +/- 2,43 y 21,27 +/- 2,69 en hombres y mujeres, respectivamente. La media del índice craneal fue de 1,99 +/- 0,26 en hombres y 2,20 +/- 0,3 en las mujeres. Los datos mencionados fueron significativamente diferentes entre hombres y mujeres. Además la media de edad de las mujeres fue menor que en los hombres. Las relaciones positivas se encontraron entre el volumen craneal y la altura, peso, edad y el IMC en ambos sexos y esta relación es más fuerte en relación con el IMC. El presente estudio, da apoyo a los otros estudios en este campo, confirma la relación entre el índice craneal y el IMC, y se indica el efecto de la raza. Teniendo en cuenta la población estudiada que son los estudiantes de la Universidad de Ciencias Médicas de Arak en diferentes regiones del país, las similitudes entre los resultados...
Subject(s)
Young Adult , Body Mass Index , Cephalometry/methods , Anthropology, Medical/methods , Students, MedicalABSTRACT
BACKGROUND: Indisputable population exposure to widespread electromagnetic fields, has grown concerns over the probable health effects of these fields. OBJECTIVE: The present study was aimed to examine the possible effects of 50 Hz extremely low frequency electromagnetic field (ELF-EMF) exposure on the number and quality of mice blastocysts. MATERIALS AND METHODS: In present study, 66 NMRI pregnant females divided into two treated and non-treated groups. The treated group exposed to ELF-EMF (50 Hz and 6×10(-3) T). Subsequently, embryos were collected by flushing the uterine horn and Fallopian tubes on the day 3 of gestation. Number of trophoectoderm (TE) and Inner Cell Mass (ICM) cells in blastocysts were determined after differential nuclei staining using a modified method. Furthermore, number of all flushed blastocysts calculated in each group. RESULTS: There was no significant difference in mean number of blastocysts in treated (6.64±1.34) and none treated (8.22±1.59) groups. In treated group, there were significant decreased in total cell number of blastocysts (p=0.000), number of ICM cells (p=0.000), and number of TE cells (p=0.001) whereas the ratio of ICM/TE cells increased (p=0.002). CONCLUSION: The data indicate that ELF-EMF is able to affect cellular composition of blastocysts, but it can't omit total volume of blastocysts.
