Biological Identification of Skulls in Indonesian and Thai Populations: Ancestry Estimation, Sex Determination, Stature Estimation, and Age Estimation / Identificación Biológica de Cráneos en Poblaciones de Indonesia y Tailandia: Estimación de Ascendencia, Determinación del Sexo, Estimación de Estatura y Estimación de Edad

SUMMARY: This review article will present an overview of biological profiles in forensic utilities. The biological profile of the skull in the existing literature can help to identify humans, especially if the condition of the victim found is a result of mutilation or a bomb explosion. When it comes to the precision of identifying skeletal remains, the human skull is frequently cited as being first in the estimation of age and ancestry and second in terms of sex and stature. It can be an alternative to assessing the following biological parameters: sex, age, stature, and ancestry. The implementation of biological profiles in the identification process is very important considering that some cases require the assistance of forensic anthropology. This review article shows the importance of the value of skulls. The method that can be applied is craniometry which can be used to determine sex, age, stature, and estimated ancestry. Different results will occur depending on the completeness of the skull. Therefore, estimation formulas have different accurate results. Discriminant function analysis has been performed on various measurement sets and its discriminant power has been validated by many researchers. Geometric morphometric analysis has become the main tool for shape analysis and many attempts have been made to use it in analyzing skulls. Several methods supported by technology have also been developed. It is hoped that the review article will show significant differences in results between studies in Thailand and Indonesia, even though they are in the same racial group.

Este artículo presenta una descripción general de los perfiles biológicos en las utilidades forenses. El perfil biológico del cráneo en la literatura existente puede ayudar a identificar a los humanos, especialmente si la condición en la que se encuentra la víctima es el resultado de una mutilación o la explosión de una bomba. Cuando se trata de la precisión en la identificación de restos óseos, el cráneo humano se cita con frecuencia como el primero en la estimación de edad y ascendencia y el segundo en términos de sexo y estatura. Puede ser una alternativa para evaluar los siguientes parámetros biológicos: sexo, edad, estatura y ascendencia. La implementación de perfiles biológicos en el proceso de identificación es importante considerando que algunos casos requieren la asistencia de la antropología forense. Este artículo de revisión muestra la importancia del valor de las cnezas óseas. El método que se puede aplicar es la craneometría para determinar el sexo, la edad, la estatura y la ascendencia estimada. Se pueden obtener diferentes resultados dependiendo de la integridad del cráneo. Por lo tanto, las fórmulas de estimación tienen resultados precisos diferentes. Se ha realizado un análisis de función discriminante en varios conjuntos de medidas y muchos investigadores han validado su poder discriminante. El análisis a través de la morfometría geométrica se ha convertido en la principal herramienta para el análisis de formas y se ha utilizado frecuentemente en el análisis de cráneos. También se han desarrollado varios métodos apoyados en la tecnología. Se espera que este trabajo muestre diferencias significativas en los resultados entre los estudios realizados en Tailandia e Indonesia, aunque pertenezcan al mismo grupo racial.

Changes in Height and Body Weight Within a Time Period of 35 Years in Males of the Same Age / Cambios en la Altura y el Peso Corporal en un Período de 35 Años en Hombres de la Misma Edad

SUMMARY: Height and body weight measurements are among the most important anthropometric variables when assessing a population's growth, development and body composition. This study aimed to evaluate the height and body weight variability of male entities aged 17-18 years within 35 years. This goal was realized by comparing the height and body weight of the population of the same gender and age in three different time studies. The descriptive statistical parameters and T-test for independent groups show systematic and significant differences in measured variables between three measurements in different timelines. Both in body height and body weight, from measurement to measurement, significant systematic and statistically significant differences (p<0.01) have been identified (1985: BH= 172.8cm, BW= 61.7kg; 2004: BH=176.8 cm, BW=66.9 kg; 2019: BH=178.5 cm, BW=72 kg). The results of this study prove that the change in the socio-economic status of a population over a period time of 35 years can significantly affect the growth and development of children/adolescents.

Las medidas de altura y peso corporal se encuentran entre las variables antropométricas más importantes a la hora de evaluar el crecimiento, el desarrollo y la composición corporal de una población. Este estudio tuvo como objetivo evaluar la variabilidad de la altura y el peso corporal de entidades masculinas de 17 a 18 años dentro de 35 años. Este objetivo se logró comparando la altura y el peso corporal de la población del mismo sexo y edad en tres estudios temporales diferentes. Los parámetros estadísticos descriptivos y la prueba T para grupos independientes muestran diferencias sistemáticas y significativas en las variables medidas entre tres mediciones en diferentes líneas de tiempo. Tanto en la altura como en el peso corporal, de medición en medición, se han identificado diferencias significativas sistemáticas y estadísticamente significativas (p<0,01) (1985: BH= 172,8 cm, BW= 61,7 kg; 2004: BH=176,8 cm, BW=66,9 kg; 2019: BH=178,5 cm, BW=72 kg). Los resultados de este estudio demuestran que el cambio en el estatus socioeconómico de una población durante un período de 35 años puede afectar significativamente el crecimiento y desarrollo de niños/ adolescentes.

The body as a mirror of inequality in México during the second half of the twentieth century / El cuerpo como espejo de la desigualdad en México durante la segunda mitad del siglo XX

Abstract This paper examines how variations in the height and health of Mexicans during the second half of the twentieth century reflect the evolution of economic inequality, as its effects have repercussions on the health and nutritional conditions of the population. The average height of Mexican adults had a modest increase with respect to the possibilities of human plasticity. These anthropometric variations were the result of the incorporation of advances in science and technology leading to improved standards of living among the population. Body changes were impacted by dietary habits, urbanization, and government policies supporting food production and distribution.

Resumen Este trabajo examina cómo las variaciones en la estatura y la salud de los mexicanos durante la segunda mitad del siglo XX son un reflejo de la evolución de la desigualdad económica pues sus efectos repercuten en las condiciones de salud y alimentación de la población. La estatura promedio de adultos mexicanos tuvo un aumento modesto con respecto a las posibilidades de la plasticidad humana. Estas variaciones antropométricas fueron resultado de la incorporación de avances en ciencia y tecnología conducentes a mejorar los niveles de vida de la población. Los cambios corporales fueron impactados por hábitos alimenticios, de urbanización y políticas gubernamentales de apoyo a la producción y distribución de alimentos.

Anthropometric Similarities and Differences in Children of Aymara and Non-Aymara Descent in Northern Chile: Implications for Health and Development / Similitudes y Diferencias Antropométricas en Niños de Etnia Aymara y Ascendencia No-Aymara en el Norte de Chile: Implicaciones para la Salud y el Desarrollo

SUMMARY: This study aims to assess the nutritional status of Aymara and non-Aymara children in Arica, comparing anthropometric measurements of boys and girls aged 4-10 to inform interventions for child health and development. We conducted a non-experimental, quantitative, cross-sectional study in Arica, Chile. The sample included 458 children, with equal representation of Aymara and non-Aymara children from diverse socioeconomic backgrounds. Trained research assistants collected anthropometric data using standardized techniques. IBM SPSS statistical software was used for data analysis, including Student's t-test and the Levene test. Both Aymara and non-Aymara children showed high prevalence of overweight and obesity. Boys had a meso-endomorph somatotype, while girls had an endomorph somatotype. Among 8-year-olds, non-Aymara children had a slightly higher mean body weight (35.87, SD 4.50) compared to Aymara children (32.27, SD 4.31), but the difference was not statistically significant (p>0.05). However, 10-year-old Aymara girls had a significantly higher mean body mass index (22.34, SD 4.21) than non-Aymara girls (20.10, SD 3.58) (p=0.05). Regarding body fat percentage, 10-year- old non-Aymara girls had a slightly higher mean (31.01, SD 5.64) than Aymara girls (26.12, SD 5.63), but the difference was not statistically significant (p>0.05). The study found high levels of overweight and obesity in children from northern Chile, increasing with age for both Aymara and non-Aymara groups. The somatotype patterns were consistent across both groups. Although the differences between Aymara and non-Aymara children were not statistically significant, the Aymara group showed slightly higher levels of overweight and obesity. Further research with a larger sample size is needed to confirm these results and identify potential trends. Efforts should focus on promoting healthy nutrition and physical activity to address the growing problem of overweight and obesity in this region.

Este estudio tiene como objetivo evaluar el estado nutricional de los niños Aymaras y no Aymaras en Arica, comparando las medidas antropométricas de niños y niñas de 4 a 10 años para informar las intervenciones para la salud y el desarrollo infantil. Realizamos un estudio no experimental, cuantitativo, de corte transversal en Arica, Chile. La muestra incluyó a 458 niños, con igual representación de niños Aymaras y no Aymaras de diversos estratos socioeconómicos. Asistentes de investigación capacitados recolectaron datos antropométricos utilizando técnicas estandarizadas. Se utilizó el software estadístico IBM SPSS para el análisis de datos, incluyendo la prueba t de Student y la prueba de Levene. Tanto los niños Aymaras como los no Aymaras presentaron una alta prevalencia de sobrepeso y obesidad. Los niños tenían un somatotipo meso-endomorfo, mientras que las niñas tenían un somatotipo endomorfo. Entre los niños de 8 años, los niños no Aymaras tenían un peso corporal medio ligeramente superior (35,87, DE 4,50) en comparación con los niños Aymaras (32,27, DE 4,31), pero la diferencia no fue estadísticamente significativa (p>0,05). Sin embargo, las niñas Aymaras de 10 años tenían un índice de masa corporal medio significativamente mayor (22,34, SD 4,21) que las niñas no Aymaras (20,10, SD 3,58) (p=0,05). En cuanto al porcentaje de grasa corporal, las niñas no Aymaras de 10 años tuvieron una media ligeramente superior (31,01, DE 5,64) que las niñas Aymaras (26,12, DE 5,63), pero la diferencia no fue estadísticamente significativa (p>0,05). El estudio encontró altos niveles de sobrepeso y obesidad en niños del norte de Chile, aumentando con la edad tanto para los grupos Aymaras como para los no Aymaras. Los patrones de somatotipo fueron consistentes en ambos grupos. Aunque las diferencias entre los niños Aymaras y no Aymaras no fueron estadísticamente significativas, el grupo Aymara mostró niveles ligeramente más altos de sobrepeso y obesidad. Se necesita más investigación con un tamaño de muestra más grande para confirmar estos resultados e identificar tendencias potenciales. Los esfuerzos deben centrarse en promover una nutrición saludable y la actividad física para abordar el creciente problema del sobrepeso y la obesidad en esta región.

Tratamiento con hormona de crecimiento en niños nacidos pequeños para la edad gestacional. Experiencia de un centro / Growth hormone treatment in small for gestational age children. A single-center experience

Introducción. Los pequeños para la edad gestacional (PEG) suelen tener una talla final 1 DE bajo la media. Se diferencian tres grupos según antropometría al nacimiento: de peso reducido (PRN), de longitud reducida (LRN) o ambos. Objetivos. Describir las características de los pacientes PEG atendidos en el Servicio de Endocrinología Pediátrica de un hospital de tercer nivel, y analizar la evolución de niños PEG sin crecimiento recuperador a los 4 años de edad, en tratamiento con hormona del crecimiento (GH), según su diagnóstico. Métodos. Estudio retrospectivo de pacientes PEG atendidos desde 2004 hasta 2021. Resultados. Se estudiaron 89 PEG; 44/89 iniciaron tratamiento con GH (11/44 PRN, 8/44 LRN y 25/44 ambos). La edad media al diagnóstico fue de 3,87 años; la talla media al inicio del tratamiento fue de -2,99 DE en los PEG diagnosticados por PRN, -2,85 DE en aquellos diagnosticados por LRN y -3,17 DE en los diagnosticados por bajo PRN y LRN. La talla final fue de -1,77, -1,52 y -1,23 DE, respectivamente, lo que supone una ganancia total de 1,22, 1,33 y 1,93 DE, respectivamente, alcanzando así su talla diana con una diferencia de 0,36 ± 0,08 DE. Conclusión. Menos de la mitad de los PEG derivados a la consulta precisaron tratamiento con GH, por no tener la edad de 4 años aún, o haber completado el crecimiento recuperador. Aquellos pacientes PEG según peso y longitud al nacimiento presentaron percentiles peores al diagnóstico y una mayor respuesta a GH.

Introduction. Small for gestational age (SGA) children usually have a final height of 1 SD below the mean. Three groups are established based on anthropometric characteristics at birth: low birth weight (LBW), short birth length (SBL), or both. Objectives. To describe the characteristics of SGA patients seen at the Department of Pediatric Endocrinology of a tertiary care hospital and to analyze the course of SGA children without catch-up growth at 4 years of age who were receiving treatment with growth hormone (GH), according to their diagnosis. Methods. Retrospective study of SGA patients seen between 2004 and 2021. Results. A total of 89 SGA children were studied; 44/89 started treatment with GH (11/44 LBW, 8/44 SBL, and 25/44 both). Their mean age at diagnosis was 3.87 years; their mean height at treatment initiation was -2.99 SD in SGA children diagnosed by LBW, -2.85 SD in those with SBL, and -3.17 SD in those with both LBW and SBL. Their final height was -1.77, -1.52, and -1.23 SD, respectively, with a total gain of 1.22, 1.33, and 1.93 SD, respectively, thus reaching their target height with a difference of 0.36 ± 0.08 SD. Conclusion. Less than half of SGA children referred to the clinic required treatment with GH because they were not yet 4 years old or had not completed their catch-up growth. SGA patients according to birth weight and length had worse percentiles at diagnosis and a greater response to GH.

Morphological Characteristics of Elite Female Volleyball Players Under 19 / Características Morfológicas de Jugadoras de Voleibol de Élite Menores de 19 Años

SUMMARY: The aim of the article is to determine the differences in morphological characteristics and jumping abilities between female volleyball players who play for different national teams. The sample consists of 48 elite female volleyball players from four different national teams which participated in European championship qualifications. The variables studied were: body height, mass, body mass index, standing reach and spike reach. The results show differences in body mass index, standing reach and spike reach. These differences are related to the needs of the different positions with regard to the actions they execute. In conclusion morphological parameters are important components of performance in many sports (volleyball). Different sports disciplines require different body parameters and body structure for maximum performance.

El objetivo del artículo fue determinar las diferencias en las características morfológicas y habilidades de salto entre las jugadoras de voleibol que juegan en diferentes selecciones nacionales. La muestra consta de 48 jugadoras de voleibol de élite de cuatro equipos nacionales diferentes que participaron en las clasificaciones del campeonato europeo. Las variables estudiadas fueron: altura corporal, masa, índice de masa corporal, alcance de pie y alcance de remate. Los resultados muestran diferencias en el índice de masa corporal, el alcance de pie y el alcance de punta. Estas diferencias están relacionadas con las necesidades de los distintos cargos en cuanto a las acciones que ejecutan. En conclusión, los parámetros morfológicos son componentes importantes del rendimiento en muchos deportes (voleibol). Las diferentes disciplinas deportivas requieren diferentes parámetros corporales y estructuras corporales para un rendimiento máximo.

Nationwide Stature Estimation from Forearm Length Measurements in Montenegrin Adolescents / Estimación de la Estatura a Partir de Mediciones de la Longitud del Antebrazo en Adolescentes Montenegrinos

SUMMARY: The purpose of this research is to determine a regression equation for estimation of stature from forearm length measurements. This research was carried out on 1200 subjects (604 male and 596 female) among the population of Montenegrin adolescents. The stature and forearm length measurements were taken according to the ISAK protocol, and the data were analyzed statistically. Linear regression analysis determined the prediction of forearm length on the criterion variable a body height at the significance level of p <0.05. These relations are presented in the form of scatter diagram. Thereby, we obtained the coefficient of determination, the multiple correlation coefficients, the partial correlation coefficient, the regression, t-test and standardized beta coefficient. The results of this research study confirmed that forearm length reliably predicts stature in both sexes of Montenegrin adolescents and revealed a very useful finding for physical anthropologists and experts from related fields. It was confirmed that there is a correlation between forearm length and body height (males: 31.9 %, females: 33.3 %).

El propósito de esta investigación fue determinar una ecuación de regresión para la estimación de la estatura a partir de medidas de la longitud del antebrazo. Esta investigación se llevó a cabo en 1200 sujetos (604 hombres y 596 mujeres) entre la población de adolescentes montenegrinos. Las medidas de estatura y longitud del antebrazo se tomaron de acuerdo con el protocolo ISAK y los datos se analizaron estadísticamente. El análisis de regresión lineal determinó la predicción de la longitud del antebrazo en la variable de criterio una altura del cuerpo en el nivel de significación de p <0,05. Estas relaciones se presentan en forma de diagrama de dispersión. De tal manera obtuvimos el coeficiente de determinación, los coeficientes de correlación múltiple, el coeficiente de correlación parcial, la regresión, la prueba t y el coeficiente beta estandarizado. Los resultados de este estudio confirmaron que la longitud del antebrazo predice de manera confiable la estatura en adolescentes montenegrinos de ambos sexos y reveló un hallazgo muy útil para los antropólogos físicos y expertos en áreas relacionadas. Se confirmó que existe una correlación entre la longitud del antebrazo y la altura del cuerpo (hombres: 31,9 %, mujeres: 33,3 %).

Estimation of Stature Based on Metatarsal Bones in a Thai Population / Estimación de la Estatura Basada en los Huesos Metatarsianos en una Población Tailandesa

SUMMARY: Stature estimation is one of the essential procedures for personal identification in forensic osteology. Therefore, the purposes of this study are to analyze the correlation between length and width of metatarsal measurements and stature, and to develop the regression equations for a Thai population. In this study, the samples were divided into two groups. The first group was called the "training group" for generating stature estimation equations, comprised of 200 skeletons, aged between 19-94 years. The second group was called the "test group" for evaluating the accuracy of generated equations, comprising 40 skeletons. The correlation between metatarsal parameters and stature were moderate to high, and all variables had positive significant correlation with stature. For males, the left ML2 is the length variable that showed the most correlation degree against stature (r=0.702), and the left MSW4 is the width variable that had the most correlation degree against stature (r=0.483). For females, right ML1 is the length variable that had the most correlation degree against stature (r=0.632), and right PW3 is the width stature that had the most correlation degree against stature (r=0.481). For all samples, left ML1 was the length variable that had the most correlation degree against stature (r=0.796) and right PW3 was the width variable that had the most correlation degree against stature (r=0.712). The results of generating multiple regression equations using a stepwise method reveals that the correlation coefficient (R) and standard error of estimate (SEE) were 0.761 and 4.96 cm, respectively, for males, and 0.752 and 4.93 cm for females, with 0.841 and 5.26 cm for all samples, respectively. According to these results, the mean of absolute error from the test group ranged from 3 to 5 cm. Therefore, stature estimation equations using length and width of metatarsals from our study can be applied to estimate stature in the Thai population.

La estimación de la estatura es uno de los procedimientos esenciales para la identificación personal en osteología forense. Por lo tanto, los propósitos de este estudio fueron analizar la correlación entre la longitud y el ancho de las medidas metatarsianas y la estatura, y desarrollar las ecuaciones de regresión para una población tailandesa. Las muestras se dividieron en dos grupos. El primer grupo se denominó "grupo de entrenamiento" para generar ecuaciones de estimación de estatura, compuesto por 200 esqueletos, con edades comprendidas entre los 19 y los 94 años. El segundo grupo se denominó "grupo de prueba" para evaluar la precisión de las ecuaciones generadas, que comprende 40 esqueletos. La correlación entre los parámetros metatarsianos y la estatura fue de moderada a alta, y todas las variables tuvieron una correlación significativa positiva con la estatura. Para el sexo masculino, la variable longitud ML2 izquierda es la que mayor grado de correlación presentó con la estatura (r=0,702), y la izquierda MSW4 fue la variable ancho la que mayor grado de correlación presentó con la estatura (r=0,483). Para el sexo femenino, ML1 derecho fue la variable longitud que tuvo mayor grado de correlación con la estatura (r=0,632), y PW3 derecha fue la variable ancho estatura que tuvo mayor grado de correlación con la estatura (r=0,481). Para todas las muestras, ML1 izquierdo fue la variable longitud que tuvo mayor grado de correlación con la estatura (r=0,796) y PW3 derecha fue la variable ancho que tuvo mayor grado de correlación con la estatura (r=0,712). Los resultados de generar ecuaciones de regresión múltiple usando un método paso a paso revela que el coeficiente de correlación (R) y el error estándar de estimación (SEE) fueron 0,761 y 4,96 cm, respectivamente, para los hombres y 0,752 y 4,93 cm para las mujeres, con 0,841 y 5,26 cm para todas las muestras, respectivamente. De acuerdo con estos resultados, la media del error absoluto del grupo de prueba osciló entre 3 y 5 cm. Por lo tanto, las ecuaciones de estimación de la estatura que utilizan la longitud y el ancho de los metatarsianos de nuestro estudio se pueden aplicar para estimar la estatura en la población tailandesa.

Paracanoe: particularities of functional classes in the structuring of the sports' training / Paracanotaje: particularidades de las clases funcionales en la estructuración del entrenamiento deportivo / Paracanoagem: particularidades das classes funcionais na estruturação do treinamento esportivo

The performance of paracanoists is characterized by the ability of the athlete to advance at maximum speed, through a technically optimal paddling motion. It`s important to consider that in the case of para-athletes, the application of forces towards paddling is compromised by physical deficiencies. Thus, this study aims to assess the performance of athletes in the KL1, KL2 and KL3 sport classes, during a paralympic paracanoe event. The sample was composed of athletes from the Brazilian male paracanoe team, with a representative of each sport class: KL1, KL2, KL3 For performance analysis, we used a kayak ergometer (KayakPro®, Miami Beach, FL, USA) to simulate a 200-meter trial, during Rio 2016 Paralympic Games Road. The variables were evaluated: time trial, stroke frequency, mean speed, number of strokes, stroke length, stroke index, and power. According to results: I) the athlete KL3 had the lowest number of strokes, the longest stroke length and the highest stroke rate index; II) the athlete KL1 had the highest number of strokes, the lowest stroke length and the stroke rate index. This study puts into perspective the distinct characteristics of a paracanoe trial, analyzed in consideration to each sport class.

El rendimiento de los paracanoistas se caracteriza por la capacidad del atleta para avanzar a la máxima velocidad, mediante un movimiento técnicamente óptimo. Es importante considerar que en el caso de los para atletas, la aplicación de fuerzas hacia el remo se ve comprometida por la discapacidad. Por lo tanto, este estudio tiene como objetivo evaluar el rendimiento de los atletas en las clases deportivas KL1, KL2 y KL3. La muestra estuvo compuesta por atletas de la selección brasileña masculina de paracanotaje, con un representante de cada clase deportiva. Para el análisis del rendimiento, utilizamos un ergómetro de kayak (KayakPro®, Miami Beach, FL, EE. UU.) para simular una prueba de 200 metros. Las variables monitoreadas fueran: tiempo, frecuencia de remada, velocidad media, número de remada, longitud de remada, índice de remada y potencia. Según los resultados: I) el atleta de la clase KL3 realizó el menor número de remadas, mayor longitud de remada y el mayor índice de remada.; II) el atleta de la clase KL1 realizó el mayor número de remadas, menor longitud de remada y índice de remada. Este estudio pone en perspectiva las distintas características de una prueba de paracanotaje, analizadas en consideración a cada clase deportiva.

O desempenho dos paracanoistas é caracterizado pela capacidade do atleta de avançar em velocidade máxima, através do movimento tecnicamente ideal. É importante considerar que no caso de para atletas, a aplicação de forças na remada é comprometida devido a deficiências apresentada. Assim, este estudo tem como objetivo avaliar o desempenho de atletas das classes esportivas KL1, KL2 e KL3, durante uma prova paralímpica de paracanoagem. A amostra foi composta por atletas da equipe brasileira de paracanoagem masculina, com um representante de cada classe esportiva. Para a análises do rendimento, foi utilizado o ergómetro de kayak (KayakPro®, Miami Beach, FL, EUA.) para simular uma prova de 200 metros. As variáveis avaliadas foram: tempo, frequência de remada, velocidade média, número de remada, comprimento de remada, índice de remada e potência. De acordo com os resultados: I) o atleta KL3 teve o menor número de remadas, o maior comprimento de remada e a maior índice de remada; II) o atleta KL1 teve o maior número de remadas, o maior comprimento de remada e índice de remada. Este estudo coloca em perspectiva as características de uma prova de paracanoagem, respeitando a especificidade de cada classe esportiva.

Percentiles de peso, talla e índice de masa corporal de escolares de Mendoza. Comparación con la referencia de la Organización Mundial de la Salud / Body mass index, weight, and height percentiles in school-aged children from Mendoza. A comparison with the WHO reference

Introducción. La Organización Mundial de la Salud (OMS) recomienda el uso de tablas de referencia para monitorear el crecimiento y estado nutricional de niños, niñas y adolescentes. El peso corporal, la talla y el índice de masa corporal (IMC) son las variables más utilizadas. El presente trabajo tiene como objetivos estimar los percentiles de peso, talla e IMC de escolares (2009-2011) residentes en el departamento San Rafael (Mendoza) y compararlos con la referencia internacional de la Organización Mundial de la Salud, a fin de establecer su pertinencia para la evaluación del crecimiento y estado nutricional de dicha población. Población y métodos. Se realizó un estudio antropométrico transversal en 3448 escolares de entre 4,00 y 13,49 años de edad. Se utilizó el programa LMS ChartMarker Pro para calcular los valores percentilares de peso/edad, talla/edad e IMC/edad, por sexo y edad, y se compararon con las curvas de la OMS. Además, se calcularon diferencias porcentuales (D%) para estimar las diferencias y su significación estadística mediante prueba de Wilcoxon. Resultados. La población de San Rafael mostró, en varones y mujeres, valores percentilares superiores de peso e IMC (D% ≈7 % y 9 %, respectivamente), y menores de talla (D% ≈0,8 %) que los de la OMS (p <0,05). Conclusión. Las diferencias encontradas alertan sobre el empleo de la referencia OMS en la población escolar de San Rafael, ya que sobreestimaría las prevalencias de sobrepeso, obesidad y desnutrición crónica, y subestimaría la de desnutrición aguda y global. Esta situación resalta la importancia de contar con una referencia local.

Introduction. The World Health Organization (WHO) recommends the use of reference tables to monitor the growth pattern and nutritional status of children and adolescents. Body mass index (BMI), weight, and height are the most commonly used variables. The objective of this study was to estimate the BMI, weight, and height percentiles for school-aged children (2009-2011) living in the department of San Rafael (Mendoza) and compare them to the international World Health Organization reference to establish their relevance for the evaluation of the growth pattern and nutritional status of this population. Population and methods. A cross-sectional anthropometric study was conducted in 3448 school-aged children aged 4.00 to 13.49 years. The LMS ChartMarker Pro software was used to estimate the BMI- for-age, weight-for-age, and height-for-age percentiles, by sex and age, and they were compared with the WHO curves. Besides, percentage differences (%D) were calculated to estimate the differences and their statistical significance using the Wilcoxon test. Results. The population of boys and girls in San Rafael showed higher weight and BMI (%D ≈ 7% and 9%, respectively) percentiles, and lower height (%D ≈ 0.8%) values than WHO reference (p < 0.05). Conclusion. The differences found warn about the use of the WHO reference in the school-aged population of San Rafael since it would overestimate the prevalence of overweight, obesity, and chronic malnutrition and underestimate the prevalence of acute and global malnutrition. This situation highlights the importance of having a local reference resource

Detecção de talentos no voleibol: uma modelagem estatística baseada na estatura adulta prevista de escolares / Talent identification for volleyball: a statistical modeling based on the students' predicted adult height

RESUMO Saber a estatura que um jovem irá atingir na idade adulta pode auxiliar os treinadores e gestores na detecção de talentos para o voleibol no contexto escolar. O objetivo do estudo foi criar uma modelagem estatística para detecção de talentos no voleibol, baseada na estatura adulta prevista (EAP) e descrever a proporção de alunos com potencial de estatura compatível com atletas de voleibol de elite. A amostra foi composta por 1060 escolares de ambos os sexos, com idade entre 12 e 16 anos, e por atletas de voleibol que disputaram a Superliga A de Voleibol Masculino e Feminino 2018-2019. A estimativa da EAP foi feita pelo método Kamis-Roche. A modelagem estatística foi realizada a partir da Estratégia Z-Celafiscs. Verificou-se que 4,3% dos meninos e 2,2% das meninas apresentaram um potencial de estatura adulta compatível com a estatura de atletas de voleibol de elite (≥1,90 m para os meninos; ≥1,78 m para as meninas), variando de acordo com a posição de jogo. Conclui-se que a estatura adulta prevista pode ser útil na detecção de potencias talentos para o voleibol no contexto escolar, identificando precocemente aqueles que terão elevada estatura na idade adulta.

ABSTRACT Knowing the stature that a young person will reach in adulthood can help coaches and sport managers in identifying talents for volleyball in a school scenario. The aim of the present study was to develop a statistical modeling to identify talents from volleyball players based on predicted adult height (PAH), and to show the proportion of students with potential body height compatible with the average height of high-level volleyball athletes. The study sample included 1060 students, wherein both masculine and feminine volleyball players, with the age ranging from 12-16 years, and volleyball players from the Brazilian Men's and Women's Volleyball Super League A competition (in Portuguese, Superliga A de Voleibol do Brasil). PAH estimation was calculated using the Kamis-Roche method. Statistical modeling was based on the Z-Celafiscs Strategy. 4.3% of boys and 2.2% of girls were found to have a potential adult height compatible with the average height of high-level volleyball athletes (≥1.90m for boys; ≥1.78m for girls), ranging according to each player game position. In conclusion, the expected adult height can be useful to identify potential talents for volleyball in a school scenario, by early identifying players who will have taller stature in adulthood.

Idades de referência dos atletas medalhados nos campeonatos de Portugal de atletismo: estudo de 30 anos (1990-2019) / Reference ages of medallists at the Portuguese athletics championships: a 30-year study (1990-2019)

RESUMO Segundo a literatura, um inventário preciso da distribuição das idades de melhor desempenho nas diferentes disciplinas do atletismo pode proporcionar uma informação ímpar na altura de se produzirem planos e programas de treino de longo prazo para eventos ao mais alto nível. O presente estudo tem como objetivo identificar a idade de melhor desempenho dos atletas participantes nos campeonatos de Portugal de atletismo, com referência às disciplinas e setores que caracterizam a competição. Foram consideradas todas as participações medalhadas (pista coberta - PC, n = 2310; ar livre - AL, n = 3161). Os intervalos de confiança para a idade média dos atletas medalhados foram obtidos com recurso ao método de Equações de Estimação Generalizadas. Os resultados indicaram a média de idades, (i) PC, mais baixa no salto com vara feminino (21.60 anos) e no salto em comprimento masculino (24.42 anos), e mais elevada nos 3000 m marcha feminino (25.18 anos) e nos 5000 m marcha masculino (29.70 anos); (ii) AL, mais baixa no salto em comprimento feminino (22.90 anos) e nos 200 m masculino (23.46 anos), e mais elevada nos 5000 m feminino (27.55 anos) e 10000 m marcha masculino (32.23 anos). Os resultados sugerem que as idades de melhor desempenho ocorrem (i) PC, entre os 23 e os 24 anos nas atletas femininas, e os 24 e os 25 nos atletas masculinos; (ii) AL, entre os 23 e os 25 anos nas atletas femininas, e os 24 e 26 anos nos atletas masculinos. O conhecimento objetivo das idades de melhor desempenho nos campeonatos de Portugal de atletismo, por sexo e disciplina, poderá ser uma informação útil para uma gestão eficiente de talentos e das carreiras desportivas.

ABSTRACT According to the literature, a precise inventory of the distribution of the best-performing ages in the different athletics disciplines can provide unique information when producing long-term training plans and programs for events at the highest level. This study aims to identify the age at which athletes participating in the Portuguese athletics championships performed best, with reference to the disciplines and sectors that characterize the competition. All medal-winning participations were considered (indoor track and field, n = 2310; outdoor track and field, n = 3161). Confidence intervals for the average age of medal-winning athletes were obtained using the Generalized Estimating Equations method. The results indicated that the average ages were (i) Indoor track and field - lower in the women's pole vault (21.60 years) and men's long jump (24.42 years), and higher in the women's 3000 m run (25.18 years) and men's 5000 m race walk (29.70 years); (ii) Outdoor track and field - lower in the women's long jump (22.90 years) and men's 200m (23.46 years), and higher in the women's 5000 m (27.55 years) and men's 10000 m race walk (32.23 years). The results suggest that the best-performing ages are (i) Indoor track and field - between 23 and 24 years old in female athletes and 24 and 25 years old in male athletes; (ii) Outdoor track and field - between 23 and 25 years old in female athletes, and 24 and 26 years old in male athletes. Objective knowledge of the best-performing ages in the Portuguese athletics championships by gender and discipline could be useful information for efficient talent and career management.

Updated growth standards for Chinese children under 7 years of age / 中华儿科杂志

Objective: To construct growth standards for Chinese children under 7 years of age. Methods: Cross-sectional study design based on national representative data on children's growth and development in 2015 was used. Stratified cluster sampling method was used. A total of 83 628 healthy children aged 0-<7 years from 9 cities, including Beijing, Harbin, Xi'an, Shanghai, Nanjing, Wuhan, Guangzhou, Fuzhou, and Kunming, were investigated from June to November 2015, excluding those with adverse conditions that may impact the establishment of the growth standards. Weight, length (height) and head circumference were measured using unified measurement tools and measurement methods. The Lambda-Mu-Sigma method was employed to establish percentile and standard deviation score reference values of weight-for-age, length (height)-for-age, head circumference-for-age, weight-for-length (height) and body mass index (BMI)-for-age of the study population. The standard deviation score curves of the new-established growth standards were compared with the 2009 reference standards. Results: Reference values of percentile (P3, P10, P25, P50, P75, P90, P97) and standard deviation score (-3, -2, -1, 0,+1,+2,+3) of weight-for-age, length (height)-for-age, head circumference-for-age, weight-for-length (height) and BMI-for-age were obtained. Compared with the 2009 growth standards, the difference of weight at P50 was -0.1-0.4 kg, the difference of length (height) at P50 was 0.1-1.3 cm, the difference of head circumference at P50 was -0.2-0.2 cm, the difference of weight for length (height) at P50 was -0.2-0.5 kg, and the difference of BMI at P50 was -0.2-0.2 kg/m2. The main differences were as follows: weight for girls aged 5.0-<7.0 years was 0.4-0.6 kg higher at +2 s, height for boys and girls aged 2.0-<7.0 years was 0.4-1.4 cm higher at -2 s, and BMI for boys and girls aged 5.0-<7.0 years was 0.1-0.3 kg/m2 higher at +2 s than the 2009 reference standards. Conclusion: The newly established growth standards for Chinese children under 7 years of age that have achieved a minor revision to the 2009 reference standards, are recommended for nationwide use in growth monitoring and nutritional assessment.

Effect of recombinant human growth hormone on serum Klotho and fibroblast growth factor 23 in children with idiopathic short stature / 中国当代儿科杂志

OBJECTIVES@#To investigate the changes in the serum levels of Klotho, fibroblast growth factor 23 (FGF23), and insulin-like growth factor-1 (IGF-1) in children with idiopathic short stature (ISS) before and after recombinant human growth hormone (rhGH) treatment, as well as the correlation of Klotho and FGF23 with the growth hormone (GH)/IGF-1 growth axis in these children.@*METHODS@#A prospective study was conducted on 33 children who were diagnosed with ISS in the Department of Pediatrics, Hebei Provincial People's Hospital, from March 10, 2021 to December 1, 2022 (ISS group). Twenty-nine healthy children, matched for age and sex, who attended the Department of Child Healthcare during the same period, were enrolled as the healthy control group. The children in the ISS group were treated with rhGH, and the serum levels of Klotho, FGF23, and IGF-1 were measured before treatment and after 3, 6, and 9 months of treatment. A correlation analysis was conducted on these indexes.@*RESULTS@#There were no significant differences in the serum levels of IGF-1, Klotho, and FGF23 between the ISS and healthy control groups (P>0.05). The serum levels of Klotho, FGF23, and IGF-1 increased significantly in the ISS group after 3, 6, and 9 months of rhGH treatment (P<0.05). In the ISS group, Klotho and FGF23 levels were positively correlated with the phosphate level before treatment (P<0.05). Before treatment and after 3, 6, and 9 months of rhGH treatment, the Klotho level was positively correlated with the IGF-1 level (P<0.05), the FGF23 level was positively correlated with the IGF-1 level (P<0.05), and the Klotho level was positively correlated with the FGF23 level (P<0.05), while Klotho and FGF23 levels were not correlated with the height standard deviation of point (P>0.05).@*CONCLUSIONS@#The rhGH treatment can upregulate the levels of Klotho, FGF23, and IGF-1 and realize the catch-up growth in children with ISS. Klotho and FGF23 may not directly promote the linear growth of children with ISS, but may have indirect effects through the pathways such as IGF-1 and phosphate metabolism. The consistent changes in Klotho, FGF23 and IGF-1 levels show that there is a synergistic relationship among them in regulating the linear growth of ISS children.

Attaching great importance to the scientific assessment of short stature in children / 中国当代儿科杂志

Short stature is a common physical developmental abnormality in children. Without timely and accurate diagnosis, as well as early intervention, it can impose a heavy burden on the children and their families. There are numerous causes for short stature, and the diagnostic process essentially involves identifying its underlying causes. Based on a thorough understanding of the regular patterns of child physical development and the characteristics of individuals at high risk of short stature, a scientific definition of short stature needs to be established, along with standardized diagnostic and treatment protocols, to achieve early diagnosis or referral for short stature. Furthermore, it is necessary to enhance scientific awareness of short stature among parents and primary care pediatricians, in order to avoid over-treatment, missed diagnoses, and misdiagnoses arising from "misconceptions", and to improve the scientific assessment of short stature.

Therapeutic effect of recombinant human growth hormone on children with growth hormone deficiency and different pituitary developmental conditions: a prospective study / 中国当代儿科杂志

OBJECTIVES@#To investigate the therapeutic effect of recombinant human growth hormone (rhGH) on children with growth hormone deficiency (GHD) and different pituitary developmental conditions.@*METHODS@#A prospective study was performed on 90 children with GHD who were admitted to Xuchang Maternity and Child Health Hospital from June 2020 to December 2021. According to pituitary height on the median sagittal plane, they were divided into three groups: pituitary dysplasia group (n=45), normal pituitary group (n=31), and enlarged pituitary growth group (n=14). The changes in body height, growth velocity, height standard deviation score and serum levels of insulin-like growth factor binding protein-3 (IGFBP-3) and insulin-like growth factor-1 (IGF-1) were examined after treatment in the above three groups, and the differences of the above indices before and after treatment were compared among the three groups.@*RESULTS@#After treatment, all three groups had significant increases in body height, growth velocity, height standard deviation score, and the serum levels of IGFBP-3 and IGF-1 (P<0.05). Compared with the normal pituitary group, the pituitary dysplasia group and the enlarged pituitary growth group had significantly higher values in terms of the differences in body height, growth velocity, height standard deviation score, IGF-1, and IGFBP-3 before and after treatment (P<0.05). There was no significant difference in the incidence rate of adverse reactions among the three groups (P>0.05).@*CONCLUSIONS@#In GHD children with different pituitary developmental conditions, rhGH can promote bone growth and increase body height, especially in children with pituitary dysplasia and pituitary hyperplasia, with good safety.

Reference values and growth curves of length for weight and head circumference for weight among Chinese newborns / 中华儿科杂志

Objective: To establish the reference values and growth curves of length for weight and head circumference for weight among Chinese newborns in order to provide a reference for the assessment of body proportionality at birth. Methods: A cross-sectional design was applied. A total of 24 375 singleton live birth newborns with gestational ages at birth of 24+0 to 42+6 weeks were recruited from June 2015 to November 2018 from 13 cities including Beijing, Harbin, Xi'an, Shanghai, Nanjing, Wuhan, Guangzhou, Fuzhou, Kunming, Tianjin, Shenyang, Changsha, and Shenzhen, excluding those with maternal or newborn conditions that may impact the establishment of the reference values. The generalized additive model for location, scale, and shape was employed to establish reference values in terms of percentile and growth curves of length for weight and head circumference for weight for male and female newborns. The random forest machine learning method was employed to analyze the importance of variables between the established reference values in this study and the previous published weight/length, body mass index (BMI), ponderal index (PI), weight/head circumference, length/head circumference in the assessment of symmetrical and asymmetrical small for gestational age (SGA) newborns. Results: A total of 24 375 newborns with 13 197 male infants (preterm birth 7 042 infants and term birth 6 155 infants) and 11 178 female infants (preterm birth 5 222 infants and term birth 5 956 infants) were included in this study. The reference values in terms of percentile (P3, P10, P25, P50, P75, P90, P97) and growth curves of length for weight and head circumference for weight were obtained for male and female newborns with gestational ages of 24+0 to 42+6 weeks. The median birth lengths corresponding to the birth weights of 1 500, 2 500, 3 000, and 4 000 g were 40.4, 47.0, 49.3 and 52.1 cm for males and 40.4, 47.0, 49.2, and 51.8 cm for females, respectively; the median birth head circumferences were 28.4, 32.0, 33.2 and 35.2 cm for males and 28.4, 32.0, 33.1, and 35.1 cm for females, respectively. The differences of length for weight between males and females were minimum, with the difference range of -0.3 to 0.3 cm at P50; the differences of head circumference for weight between males and females were minimum, with the difference range of 0 to 0.2 cm at P50. Based on the match between birth length and birth weight for classifying symmetrical and asymmetrical SGA, length for weight and PI contributed the most, accounting for 0.32 and 0.25, respectively; based on the match between birth head circumference and birth weight, head circumference for weight and weight/head circumference contributed the most, accounting for 0.55 and 0.12, respectively; based on the match between birth length or head circumference with birth weight, head circumference for weight and length for weight contributed the most, accounting for 0.26 and 0.21, respectively. Conclusion: The establishment of the new standardized growth reference values and growth curves of length for weight and head circumference for weight among Chinese newborns are useful for clinical practice and scientific research.

Estado nutricional de crianças de 5 a 9 anos por regional de saúde do estado de Goiás / Nutritional status of children aged 5 to 9 years by regional health of the state of Goiás

Nos últimos anos a população brasileira apresenta um aumento expressivo de indivíduos com excesso de peso e redução na prevalência de desnutrição. O Sistema de Vigilância Alimentar e Nutricional (SISVAN) permite o monitoramento de dados antropométricos e marcadores de consumo alimentar dos usuários da Atenção Primária do Sistema Único de Saúde de todas as fases da vida. Objetivo: Estimar a prevalência de magreza, excesso de peso e déficit de estatura de escolares de 5 a 9 anos no estado de Goiás e regionais de saúde (RS). Métodos: Trata-se de estudo ecológico descritivo, realizado a partir de dados secundários registrados no SISVAN nos últimos 5 anos. A avaliação antropométrica foi realizada a partir dos indicadores estatura por idade e índice de massa corporal por idade. Resultados: Observou-se baixa prevalência de magreza (5,7%) e déficit de estatura (6,1%) e alta prevalência de excesso de peso (34,8%) entre as crianças avaliadas, sendo maior na RS Entorno Norte, nos dois primeiros parâmetros, e na RS Rio Vermelho, no último parâmetro. Com relação à evolução das prevalências nos últimos cinco anos, observou-se aumento do excesso de peso. Conclusão: Destacou-se o crescente aumento no excesso de peso em escolares de 5 a 9 anos, indicando a importância do monitoramento dos dados de estado nutricional, bem como a atenção para o desenvolvimento de ações voltadas para a reversão do cenário encontrado

In recent years, the Brazilian population has shown a significant increase in overweight individuals and a reduction in the prevalence of malnutrition. The Food and Nutrition Surveillance System (SISVAN) allows the monitoring of anthropometric data and food consumption markers of users of Primary Care of the Unified Health System of all stages of life. Objective: To estimate the prevalence of thinness, excess weight and short stature in schoolchildren aged 5 to 9 years in the state of Goiás and regional health centers (RS). Methods: This is an descriptive ecological study, based on secondary data recorded in SISVAN in the last 5 years. Anthropometric assessment was performed using height-for-age and body mass index-for-age indicators. Results: There was a low prevalence of thinness (5.7%) and short stature (6.1%) and a high prevalence of overweight (34.8%) among the children evaluated, being higher in RS Entorno Norte in the first two parameters and in the RS Rio Vermelho in the last parameter. Regarding the evolution of prevalence in the last five years, an increase in excess weight was observed. Conclusion: The growing increase in overweight in schoolchildren aged 5 to 9 years was highlighted, indicating the importance of monitoring nutritional status data, as well as attention to the development of actions aimed at reversing the scenario found

Evaluation of thyromental height as a predictor of difficult laryngoscopy and difficult intubation: a cross-sectional observational study

Abstract Background and objectives Several anthropometric measurements have been suggested to identify a potentially difficult airway. We studied thyromental height (TMH) as a predictor of difficult laryngoscopy and difficult intubation. We also compared TMH, ratio of height to thyromental distance (RHTMD), and thyromental distance (TMD) as predictors of difficult airway. Methods This cross-sectional observational study was conducted in 300 adult surgical patients requiring tracheal intubation. Preoperatively airway characteristics were assessed. Standard anesthesia was administered. Degree of difficulty with mask ventilation, laryngoscopic view, duration of laryngoscopy, and difficulty in tracheal intubation (intubation difficulty scale score) were noted. Multivariate logistics regression analysis was performed to identify independent predictors for difficult laryngoscopy. Results Laryngoscopy was difficult in 46 of 300 (15.3%) patients; all 46 patients had Cormack-Lehane grade 3 view. Duration of laryngoscopy was 27 ± 11 s in patients with difficult laryngoscopy and 12.7 ± 3.9 s in easy laryngoscopy; p= 0.001. Multivariate analysis identified that TMH, presence of short neck, and history of snoring were independently associated with difficult laryngoscopy. Incidence of difficult intubation was 17.0%. A shorter TMH was associated with higher IDS scores; r = -0.16, p= 0.001. TMH and duration of laryngoscopy were found to be negatively correlated; a shorter TMH was associated with a longer duration of laryngoscopy; r = -0.13, p= 0.03. The cut-off threshold value for TMH in our study is 4.4 cm with a sensitivity of 66% and a specificity of 54%. Conclusion Thyromental height predicts difficult laryngoscopy and difficult intubation. TMD and RHTMD did not prove to be useful as predictors of difficult airway.