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-Multiple correspondence analysis between the groups of classification of somatic maturation, indexes of waist circumference and waist-to-height ratio with the groups of adolescents with adequate fat percentage (G1) and excess fat (G2)
Source publication
Objective:
To evaluate the relationship between the stages of somatic maturation and body composition in eutrophic female adolescents with or without excessive body fat.
Methods:
Cross-sectional study of 118 female adolescents, from 14 to 19 years-old, in Viçosa, Minas Gerais, Southeast Brazil. The adolescents were divided in two groups: Group 1...
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Antecedentes
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Objetivo
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Materiales y métodos
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Citations
... In this context, it is known that during adolescence there is a physiological increase in body fat and that it occurs more intensely in females. This increase in BF is essential for the growth and maintenance of menstrual cycles [24]; however, in excess, it is a risk factor for the development of obesity. In boys, the superior increase in muscle mass predominates [25]. ...
Background:
Excess adiposity is one of the main risk factors for the development of cardiovascular and metabolic diseases. The purpose of this study is to compare cardiometabolic risk factors in eutrophic adolescents with a high body fat percentage (%BF) with eutrophic adolescents with adequate %BF and those with excess weight and %BF.
Methods:
Cross-sectional study with 1043 adolescents. This study presented power equal to 99.75%. Body fat and anthropometric, clinical and biochemical indicators were evaluated. Participants were grouped according to body composition classified by body mass index (BMI) and body fat percentage. Statistical analyses were performed using R software version 4.0.2, adopting a significance level of 5%. The Mann-Whitney test, principal components analysis and logistic regression were performed.
Results:
It was observed that the SG was more similar to GC2 than to GC1 for both sexes, demonstrating that there was a greater similarity between these groups in relation to the evaluated factors. Higher values for TC, SBP and TG were associated with the SG when the CG1 was used as reference, controlled for sex and age. Likewise, higher TC values and lower levels of SBP, TG and LDL were related to SG when the CG2 was used as reference.
Conclusion:
Body fat assessment is more effective in predicting risk factors and cardiometabolic diseases than BMI alone.
... Adolescence is a transitory stage between childhood and adulthood, from 10-19 years characterized by rapid physical growth, accompany with changes in body shape and composition as well as neurological and cognitive changes [5,6]. The adolescents with sickle cell anaemia constantly experience unpleasant health conditions such as chronic pain; feelings of frustration over their general wellbeing and psychological adjustment which may distort medical care and spell bad prognosis for the condition [6][7][8]. ...
Background: A lot of adolescents with sickle cell anaemia constantly face unpleasant ill health conditions such as chronic pain as well as feelings of frustration over their general well-being and psychological adjustment which may distort medical care and spell bad prognosis for their condition. This study therefore assessed the psychosocial problems of adolescents with sickle cell anaemia who are on hydroxyurea in Jos, North central Nigeria. Method: This study was a comparative cross-sectional study among adolescents with Sickle Cell Anaemia (SCA) who were on hydroxyurea and those not on hydroxyurea in Jos University Teaching Hospital, Jos, North Central Nigeria. Eighty-eight participants who were from ages of 11- 17 years were selected for the study between February and August, 2020. Data were collected with the use of questionnaire. Data analysis was conducted using Statistical Package for Social Sciences version 18 (SPSS Inc., Chicago, IL, USA). Test for association was done using Fisher’s exact test. Results: The result of the study showed that there was no difference between those on hydroxyurea and those not on hydroxyurea. The study equally showed that there was no statistically significant difference (p>0.05) in psychosocial life of adolescent SCA patients who used hydroxyurea and those who did not use hydroxyurea. Conclusion: Hydroxyurea medication in adolescents with sickle cell anaemia for a year and above did not impact on their psychosocial life.
... The arguments in favour of adjustment of the parameters of nutritional assessment of adolescents by sexual maturation are based on empirical observations of two physiological phenomena: (1) increase in the variability of the intra-stage BMI of sexual maturation and (2) increase in the amount of adipose tissue and body mass, especially in girls (3)(4)(5)(6) . Contrary arguments are also based on empirical observations: (1) growth and development at puberty are biologically regulated processes and, in this sense, intrastage variability of maturation is not intense to the point of confusing the assessment between the pubertal stages and (2) obesity or overweight are associated with the precocity of sexual maturation, but it is not associated with the differences between the pubertal stages (7)(8)(9) . ...
... Thus, some studies suggest that body mass is an expressive modifier of the body's physical parameters and it is an indicator of sexual maturation (9,10) . Previous studies have used nutritional assessment indicators in a one-dimensional model and they presented the need to adjust BMI according to the stages of sexual maturation proposed by Tanner protocol (5,6,11) . However, there is evidence that this one-dimensionality can compartmentalise and it can make complex the interpretation of anthropometric, biochemical or body composition changes throughout the sexual maturation process (15,16) . ...
Objective
Our study aimed to describe body phenotypes (BP) estimated by multivariate analysis and their association with body mass.
Design
Body phenotypes were defined based on demographic variables, anthropometric data (body mass, height, skinfolds and circumferences), body composition (phase angle measured by bioelectrical impedance analysis), biochemical parameters (triglycerides, glucose, total cholesterol ratio/Low Density Lipoproteins (LDL), haemoglobin and sexual maturation (pubic hair and breasts or gonads). Analysis of variance (ANOVA) was performed to verify the differences between skin colour and the stages of pubertal development, body phenotypes, body composition, anthropometric, and biochemical variables.
Setting
Cities of São Paulo-SP, Piracicaba-SP and Florianópolis-SC from Brazil and the United States.
Participants
9269 adolescents aged between 10 to 15 years old.
Results
The composition of BP was similar in all surveys, which are: BP1 was composed by skinfolds, body mass and circumferences variables; BP2 by pubic hair, breast in girls or gonad in boys, height and age; BP3 by cholesterol, triglycerides and glucose; and BP4 by phase angle, haemoglobin and glucose (negative loading). There was a strong correlation (r = 0.9, p <0.001) between BP1 and body mass index.
Conclusion
We highlighted independence observed between biochemical parameters, anthropometry, body composition and sexual maturation. BP may support the calculation of scores for diagnosis of obesity based on anthropometric variables and overcome ambiguity in the isolated use of body mass index.
... On average, the post-PHV group was nearly 20 kg heavier than the mid-PHV group; yet, there was no difference in CMJ height between the groups at follow-up. This could be suggestive of the aforementioned increase in body fat due to increased concentrations of estrogen and progesterone after menarche (28). Menarche occurs around the age of 13 years in British girls (51), an age that is between those of the mid-PHV (11.7 6 0.6 years) and post-PHV (14.3 6 0.6 years) groups of the current study, indicating that menarche had likely initiated in the older group. ...
Biological maturation has been shown to affect male youths’ responses to plyometric training (PT). However, to date, no researcher has examined the effect of maturation on the effects of PT in female youth. We undertook the first controlled intervention study to examine this, focusing on adaptive responses to countermovement jump (CMJ), reactive strength index (RSI) and change of direction (COD) performance in groups of female youth divided by maturation status (years from peak height velocity [PHV]). The training program lasted 7 weeks with subjects undertaking two sessions of PT per week. In the Mid-PHV group, there was a small increase (Effect size; 90% confidence interval = 0.40; -0.23-1.03) in CMJ performance. No changes were observed in the Post-PHV group (0.02; -0.68-0.72). For RSI, there was a moderate increase in the Mid-PHV group (0.94; 0.29-1.59) with only a trivial increase in the Post-PHV group (0.06; -0.65-0.76). The intervention exerted no positive effect on COD performance in any group. Plyometric training appears to enhance CMJ and RSI in female youth though the magnitude of adaptation could be affected by maturation status. A twice per week program of multidirectional jumping and hopping, with bilateral and unilateral components, can be used as a preparatory precursor to physical education classes or recreational sport.
... The present study shows results like those found by Armstrong and Welsman 15 , which showed a random behavior of cardiorespiratory capacity in children and adolescents up to the age of 13 years, presenting a progres- sive decline of this aptitude in girls from the age of 17 years. ...
Cardiorespiratory fitness is an important health status indicator. The purpose of this study was to verify the cardiorespiratory fitness according to age group and gender in children and adolescents from Sergipe, Brazil. It is a cross-sectional study with sample consisting of 195 adolescents of both genders with mean age of 11.75 ± 3.0 years. For the characterization of participants, a questionnaire with age and gender identification designed by researchers was used. Subsequently, participants were submitted to anthropometric evaluation in order to estimate the maturational stage by means of the peak height velocity (PHV). The 20-meter back-and-forth test was used to estimate cardiorespiratory fitness. Two-way ANOVA was applied with sample divided into two groups (“up to 13 years” and “above 13 years”). Polynomial contrast was used to identify the type of tendency for cardiorespiratory fitness, and simple contrast for multiple comparisons. All procedures were performed using SPSS version 22.0 software, considering 5% significance level. In the “over 13 years” group, there was a significant effect on the cardiorespiratory capacity behavior according to “gender” [F(1, 45) = 5.54, p = 0.02, r = 0.33] and “age” [F(4.45) = 3.37, p = 0.02, r = 0.48]. The simple contrast identified increased cardiorespiratory fitness behavior in relation to age groups of 15 and 16 year when compared to the age group of 14 years. It was concluded that gender and age positively influence cardiorespiratory fitness from the maturational reference age in the study group.
... 4 Padrões de estética impostos pela mídia influenciam diretamente a insatisfação com a imagem corporal e o comportamento alimentar inadequado de adolescentes, sendo necessária a execução de estudos que compreendam melhor estes elementos. 5 Uma vez que a adolescência se caracteriza por rápidas transformações corporais, psicossociais e ambientais, a educação nutricional para essa faixa etária é imprescindível, embora desafiadora [6][7][8] . A educação alimentar tem relevância para a recuperação e para a promoção de hábitos alimentares saudáveis e pode aumentar os conhecimentos do indivíduo, favorecendo a tomada de decisão para atitudes, hábitos e práticas alimentares sadias e variadas. ...
RESUMOObjetivo: avaliar o efeito de ação de educação em saúde, conduzida pelo Facebook, na prevalência de sobrepeso/obesidade e na satisfação corporal de adolescentes, bem como a relação de concordância entre estas medidas e as diferenças em adolescentes. Método: estudo quantitativo, ensaio não controlado, em que 69 adolescentes de ambos os sexos, dos 13 aos 19 anos, foram avaliados em 4 meses quanto ao estado nutricional e percepção corporal, antes e depois de intervenção de educação em saúde sobre nutrição. Resultados: 20,8% estavam com excesso de peso, 20,3% se percebiam com excesso de peso e 36,2% apresentavam insatisfação corporal. Houve maior prevalência de insatisfação corporal entre adolescentes do sexo feminino com sobrepeso/obesidade. Conclusão: não se evidenciou impacto estatisticamente significativo da estratégia de educação em saúde executada na prevalência de sobrepeso/obesidade e na satisfação com a imagem corporal. Discutem-se os fatores associados com o baixo impacto da intervenção e a importância de estudos dessa natureza, visto que a obesidade é multideterminada, o que implica a necessidade de que abordagens utilizadas para a prevenção e o controle desse agravo sejam avaliadas quanto a seus sucessos e insucessos para que sejam aprimoradas em estudos futuros. Descritores: Adolescente; Antropometria; Imagem corporal; Rede social; Educação em saúde; Obesidade.ABSTRACT Objective: to evaluate the effect of a health education action, conducted by Facebook, on the prevalence of overweight/obesity and adolescent body satisfaction, as well as the relationship between these measures and differences among adolescents. Method: quantitative study, uncontrolled trial, in which 69 adolescents of both sexes, from 13 to 19 years old, were evaluated in four months regarding nutritional status and body perception, before and after health education intervention on nutrition. Results: 20.8% were overweight, 20.3% perceived as overweight and 36.2% presented body dissatisfaction. There was a higher prevalence of body dissatisfaction among overweight / obese female adolescents. Conclusion: there was no statistically significant impact of the health education strategy, implemented in the prevalence of overweight/obesity and satisfaction with body image. The factors associated with the low impact of the intervention and the importance of studies of this nature were discussed, since obesity is multidetermined, which implies that the approaches used for the prevention and control of this condition should be evaluated for their successes and failures to be improved in future studies. Descriptors: Adolescent; Anthropometry; Body Image; Social Networking; Health Education; Obesity.RESUMEN Objetivo: evaluar el efecto de acción de educación en salud conducida por el Facebook en la prevalencia de sobrepeso / obesidad y en la satisfacción corporal de adolescentes, así como la relación de concordancia entre estas medidas y las diferencias en adolescentes. Método: el estudio cuantitativo, ensayo no controlado, en el que 69 adolescentes de ambos sexos, de 13 a 19 años, fueron evaluados en 4 meses en cuanto al estado nutricional y percepción corporal, antes y después de intervención de educación en salud sobre nutrición. Resultados: 20,8% estaban con exceso de peso, el 20,3% se percibía con exceso de peso y el 36,2% presentaba insatisfacción corporal. Hubo mayor prevalencia de insatisfacción corporal entre adolescentes con sobrepeso / obesidad. Conclusión: no se evidenció impacto estadísticamente significativo de la estrategia de educación en salud ejecutada en la prevalencia de sobrepeso / obesidad y en la satisfacción con la imagen corporal. Se discuten los factores asociados con el bajo impacto de la intervención y la importancia de estudios de esa naturaleza, ya que la obesidad es multideterminada, lo que implica la necesidad de que enfoques utilizados para la prevención y control de ese agravamiento sean evaluados en cuanto a sus éxitos y fracasos para que se perfeccionen en estudios futuros. Descriptores: Adolescente; Antropometría; Imagem Corporal; Red Social; Educación em Salud; Obesidad.
... In fact, it is the only known noninvasive method used in cross-sectional studies. Therefore, its use and application is a necessity in the field of sports sciences and health [26][27][28] . ...
Background/aim:
The study of physical growth variables in terms of chronological age and biological maturation may provide a common reference point to reflect on the occurrence of body dimensions in and between individuals. The objectives of this study were as follows: (a) verify if the observed gender differences in the variables of physical growth by chronological age are confounded by physical maturation, (b) compare physical growth patterns with the reference of the Centers for Disease Control and Prevention (CDC)-2012, and (c) develop regional curves to assess physical growth in terms of biological maturation.
Methods:
Researchers studied 3,674 children and adolescents. Weight, standing height, and sitting height were measured. Biological maturation was determined by using the age of peak velocity growth. Body mass index (BMI) was calculated. Growth variables were compared with the CDC-2012 reference. Percentiles were calculated by the LMS method. The students differed in weight and BMI when compared to the reference individuals. The differences in weight, standing height, and BMI between both genders are more pronounced when they are aligned with biological age rather than chronological age.
Conclusion:
Weight and BMI differ from the reference. Furthermore, the assessment of the physical growth trajectory should be analyzed in terms of biological maturation. The proposed regional curves may be used in and applied to clinical and epidemiological contexts.
... It has been emphasized that maturity assessment has received increasing attention for clinical purposes, sport classification during the adolescent period and the relationship between stages of somatic maturation and body composition 24 . Less has been empathized about the role of childhood overweight and nutrition on the earlier timing of puberty. ...
Introduction:
beginning of adolescence comprises important physical modifications, which affects growth and changes in body composition, therefore it is important to consider maturation assessment.
Objective:
to develop a non-invasive method to assess maturity status in Venezuelan adolescents from peak height velocity (PHV) by means of anthropometric variables in a cross-sectional sample.
Methods:
data comprised 681 Venezuelan adolescents 9 up to 18 years of age. Mirwald equation was applied to derived PHV. Regression analysis was used in order to build a model for Venezuelan sample as well as, ROC curves to assess sensitivity and specificity of anthropometric variables.
Results:
the predictive equations for both sexes, exhibited a high determination coefficient (< 0.99) and a minimal estimation error (0.06). Mean decimal age at categories of PHV obtained by both equations: criterion and model, were very similar (13.27 vs. 13.39) for boys, and (11.62 vs. 11.77) for girls. Bland-Altman plot showed a tight concordance between the two equations and all anthropometric indices, exhibited high area under the curve > 0.75, specially sitting height.
Discussion and conclusion:
in Venezuela, there is little work based on longitudinal studies of the maturation status. Giving the difficult faced in the longitudinal studies recent works have been used cross-sectional methodology in the assessment of the somatic maturation, both in non athletic and athletic populations. This study provides predicting equations for the assessment of the somatic maturation adjusted to Venezuelan population developed from Mirwald equation, which may be used to aid in evaluation of nutritional and general health, as well as, a reduction of risks associated with miss-classification for chronological age.
... Among these, it is worth mentioning the intense growth that interferes with the accumulation and distribution of body fat. 1,2 Clinical and epidemiological studies have established that body fat distribution is related to cardiovascular risk factors in adults 3,4 and also in children and adolescents. 5,6 The use of valid measures when assessing body composition and the fat distribution pattern is required in population studies and clinical practice to attain an early identification of individuals at risk of developing diseases, and to help in the prevention/treatment of obesity. ...
To verify the correlation between body fat location measurements with the body mass index (BMI), body fat percentage (BF%) and height, according to the nutritional status in female adolescents.
... Among these, it is worth mentioning the intense growth that interferes with the accumulation and distribution of body fat. 1,2 Clinical and epidemiological studies have established that body fat distribution is related to cardiovascular risk factors in adults 3,4 and also in children and adolescents. 5,6 The use of valid measures when assessing body composition and the fat distribution pattern is required in population studies and clinical practice to attain an early identification of individuals at risk of developing diseases, and to help in the prevention/treatment of obesity. ...
To verify the correlation between body fat location measurements with the body mass index (BMI), percentage of body fat (%BF) and stature, according to the nutritional status in female adolescents.
A controlled cross sectional study was carried out with 113 adolescents (G1: 38 eutrophic, but with high body fat level, G2: 40 eutrophic and G3: 35 overweight) from public schools in Viçosa-MG, Brazil. The following measures have been assessed: weight, stature, waist circumference (WC), umbilical circumference (UC), hip circumference (HC), thigh circumference, waist-to-hip ratio (WHR), waist-to-stature ratio (WSR), waist-to-thigh ratio (WTR), conicity index (CI), sagittal abdominal diameter (SAD), coronal diameter (CD), central skinfolds (CS) and peripheral (PS). The %BF was assessed by tetrapolar electric bioimpedance.
The increase of central fat, represented by WC, UC, WSR, SAD, CD and CS, and the increase of peripheral fat indicated by HC and thigh were proportional to the increase of BMI and %BF. WC and especially the UC showed the strongest correlations with adiposity. Weak correlation between WHR, WTR, CI and CS/PS with adiposity were observed. The stature showed correlation with almost all the fat location measures, being regular or weak with waist.
The results indicate colinearity between body mass and total adiposity with central and peripheral adipose tissue. We recommend the use of UC for assessing nutritional status of adolescents, because it showed the highest ability to predict adiposity in each group, and also presented regular or weak correlation with stature.
Copyright © 2014 Associação de Pediatria de São Paulo. Publicado por Elsevier Editora Ltda. All rights reserved.
