Valter Paulo Neves Miranda

Somatic maturation and body composition in female healthy adolescents with or without adjustment for body fat

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 (G1), eutrophic with adequate body fat percentage, and Group 2 (G2), eutrophic with high body fat percentage. The somatic maturation was assessed by the formula for estimating the Peak Height Velocity (PHV). Results: The PHV had higher average score in G1 adolescents compared to G2 (0.26 versus 0.05; p=0.032). There was an association between G1, G2 and the somatic maturation (p=0.049). The female adolescents before and during PHV presented higher values of fat body BMI (p=0.034) and percentage of central fat (p=0.039) compared to the adolescents after PHV. There was a correspondence between before PHV stage and the excess of body fat (α=0.751). Conclusions: There was an association between somatic maturation and body composition in eutrophic female adolescents. Length, BMI and fat percentage were different among the somatic maturation stages. It is relevant to evaluate the somatic maturation and the changes occurring in the body composition during adolescence in order to better evaluate and manage the nutritional status and the body fat excess.Objective: To evaluate the relationship between the stages of somatic maturation and body composition in eutro - phic female adolescents with or without exce...

Body image in different periods of adolescence

Objetivo: Investigar a imagem corporal em diferentes periodos da adolescencia. Metodos: Estudo transversal com estudantes de dez a 19 anos de escolas da rede publica de municipios de pequeno porte do interior da Zona da Mata Mineira. Aplicaram-se o Body Shape Questionnaire (BSQ), a Escala de Evaluacion de Insatisfacion Corporal para Adolescentes e a Escala de Silhueta para Adolescentes (ESA). Classificou-se o periodo da adolescencia por meio da idade. A massa corporal e a estatura foram mensuradas para o calculo do indice de massa corporea e do estado nutricional. Os resultados foram avaliados por regressao logistica. Resultados: Participaram 531 adolescentes (318 meninas). A media de idade foi de 15,6±2,2 anos e 84,6% eram eutroficos. A prevalencia de insatisfacao corporal variou de 28,9% (BSQ) a 78,9% (ESA). Individuos com excesso de peso apresentaram maior chance de insatisfacao (BSQ: OR 3,66, p<0,001; ESA: OR 4,108, p<0,001). O mesmo ocorreu para meninas e individuos no periodo inicial da adolescencia (p<0,05). Conclusoes: A prevalencia de insatisfacao com a imagem corporal foi baixa entre os adolescentes das cidades pequenas de Minas Gerais, porem a maioria desejava uma silhueta diferente da atual. Os resultados mostraram maior insatisfacao entre os participantes no periodo inicial da adolescencia, assim como nos do sexo feminino e naqueles com excesso de peso.

Maturação somática e composição corporal em adolescentes eutróficos do sexo feminino com ou sem adequação de gordura corporal

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 (G1), eutrophic with adequate body fat percentage, and Group 2 (G2), eutrophic with high body fat percentage. The somatic maturation was assessed by the formula for estimating the Peak Height Velocity (PHV). Results: The PHV had higher average score in G1 adolescents compared to G2 (0.26 versus 0.05; p=0.032). There was an association between G1, G2 and the somatic maturation (p=0.049). The female adolescents before and during PHV presented higher values of fat body BMI (p=0.034) and percentage of central fat (p=0.039) compared to the adolescents after PHV. There was a correspondence between before PHV stage and the excess of body fat (α=0.751). Conclusions: There was an association between somatic maturation and body composition in eutrophic female adolescents. Length, BMI and fat percentage were different among the somatic maturation stages. It is relevant to evaluate the somatic maturation and the changes occurring in the body composition during adolescence in order to better evaluate and manage the nutritional status and the body fat excess.Objective: To evaluate the relationship between the stages of somatic maturation and body composition in eutro - phic female adolescents with or without exce...

BODY DISSATISFACTION, PHYSICAL ACTIVITY, AND SEDENTARY BEHAVIOR IN FEMALE ADOLESCENTS

ABSTRACT Objective: To evaluate the association of body image with physical activity level, body composition, and sedentary behavior (SB) of female adolescents. Methods: Exploratory cross-sectional study conducted with 120 female adolescents aged between 14-19 years, from the city of Viçosa, Minas Gerais, Southeast Brazil. Body image was evaluated with a Body Silhouette Scale (BSS) and a Body Shape Questionnaire (BSQ). Weight, height, and waist circumference values were analyzed, as well as the waist-to-height ratio and body fat percentage. The physical activity level (PAL) was assessed by 24-hour Physical Activity Recall and SB by screen time, that is, time spent in front of a TV, playing video game, on the computer and using tablets, and, separately, the cell phone time. Results: Mean age was 16.5±1.5 years, and most adolescents were eutrophic (77.6%), sedentary/low PAL (84.2%), with high screen time (85.2%) and cell phone time (58.7%). Body dissatisfaction was stated in 40.6% of BSQ and 45.8% of BSS evaluations. Body distortion was identified in 52.9% of participants. All body composition measures, along with cell phone time and PAL, were associated with body dissatisfaction, the more active adolescents presenting higher levels of dissatisfaction. Conclusions: This study concluded that female adolescents with higher cell phone time also present higher body dissatisfaction, as well as the most physically active ones. All body composition measurements were associated with body dissatisfaction, mainly body mass index, waist circumference, and waist-to-height ratio.

Imagem corporal de adolescentes do sexo feminino e sua associação à composição corporal e ao comportamento sedentário

Resumo O objetivo deste artigo e avaliar a imagem corporal e sua associacao a composicao corporal, indicadores antropometricos e comportamento sedentario de adolescentes do sexo feminino. Estudo transversal com adolescentes do sexo feminino de Vicosa, MG. A imagem corporal foi avaliada por meio do Body Shape Questionnaire (BSQ) e pela Escala de Silhuetas. O percentual de gordura (%GC) e outros parâmetros antropometricos foram aferidos. O comportamento sedentario (CS) foi avaliado a partir da soma do tempo de tela (TT) e do tempo de celular (TC). A amostra foi composta por 274 adolescentes, a maioria com IMC adequado (81,6%), porem, 53,9% apresentaram o % GC elevado. Mais da metade das adolescentes apresentaram o CS elevado, 68,2% com o TT e 54,7% com o TC acima de 2h. A insatisfacao corporal manifestou-se em 45,7%, e 50,2% desejaram uma silhueta diferente da atual. O perimetro da cintura (PC) (OR = 11,94, IC = 2,744 – 51,728) e a relacao cintura-estatura (RCE) (OR = 10,535, IC = 3,109 – 35,698) foram as medidas mais associadas a insatisfacao corporal. Todas as medidas de composicao corporal apresentaram associacao significativa com a insatisfacao corporal, sendo o PC e o RCE os fatores mais condicionantes. O CS mostrou-se elevado, no entanto, nao se associou com a avaliacao negativa da imagem corporal.The scope of this article is to evaluate the body image and its association with body composition, anthropometric indicators and sedentary behavior of female adolescents. It involved a cross-sectional study with female adolescents from Viçosa in the state of Minas Gerais. The body image was assessed by the Body Shape Questionnaire (BSQ) and by the Silhouette Scale. The body fat percentage (BFP) and other anthropometric parameters were measured. The sedentary behavior (SB) was evaluated by the sum of screen time (ST) and cellular time (CT). The sample consisted of 274 adolescents, the majority having an adequate BMI (81.6%), however, 53.9% had elevated BFP. More than half of the adolescents had elevated SB, 68.2% with ST and 54.7% with CT above 2h. Body dissatisfaction was expressed as 45.7% by BSQ and 50.2% wished for a silhouette different than the current silhouette. The waist circumference (WC) (OR = 11.94, CI = 2.744 - 51.728) and waist-to-height ratio (WHR) (OR = 10.535, CI = 3.109 - 35.698) were the measurements most associated with body dissatisfaction. All body composition measurements were significantly associated with body dissatisfaction, and the WC and WHR the most conditioning factors with dissatisfaction. The SB was elevated; however, it was not associated with a negative assessment of body image.

Imagen corporal en distintos periodos de la adolescencia

Objetivo: Investigar a imagem corporal em diferentes periodos da adolescencia. Metodos: Estudo transversal com estudantes de dez a 19 anos de escolas da rede publica de municipios de pequeno porte do interior da Zona da Mata Mineira. Aplicaram-se o Body Shape Questionnaire (BSQ), a Escala de Evaluacion de Insatisfacion Corporal para Adolescentes e a Escala de Silhueta para Adolescentes (ESA). Classificou-se o periodo da adolescencia por meio da idade. A massa corporal e a estatura foram mensuradas para o calculo do indice de massa corporea e do estado nutricional. Os resultados foram avaliados por regressao logistica. Resultados: Participaram 531 adolescentes (318 meninas). A media de idade foi de 15,6±2,2 anos e 84,6% eram eutroficos. A prevalencia de insatisfacao corporal variou de 28,9% (BSQ) a 78,9% (ESA). Individuos com excesso de peso apresentaram maior chance de insatisfacao (BSQ: OR 3,66, p<0,001; ESA: OR 4,108, p<0,001). O mesmo ocorreu para meninas e individuos no periodo inicial da adolescencia (p<0,05). Conclusoes: A prevalencia de insatisfacao com a imagem corporal foi baixa entre os adolescentes das cidades pequenas de Minas Gerais, porem a maioria desejava uma silhueta diferente da atual. Os resultados mostraram maior insatisfacao entre os participantes no periodo inicial da adolescencia, assim como nos do sexo feminino e naqueles com excesso de peso.

Imagem corporal em diferentes períodos da adolescência

Objetivo: Investigar a imagem corporal em diferentes periodos da adolescencia. Metodos: Estudo transversal com estudantes de dez a 19 anos de escolas da rede publica de municipios de pequeno porte do interior da Zona da Mata Mineira. Aplicaram-se o Body Shape Questionnaire (BSQ), a Escala de Evaluacion de Insatisfacion Corporal para Adolescentes e a Escala de Silhueta para Adolescentes (ESA). Classificou-se o periodo da adolescencia por meio da idade. A massa corporal e a estatura foram mensuradas para o calculo do indice de massa corporea e do estado nutricional. Os resultados foram avaliados por regressao logistica. Resultados: Participaram 531 adolescentes (318 meninas). A media de idade foi de 15,6±2,2 anos e 84,6% eram eutroficos. A prevalencia de insatisfacao corporal variou de 28,9% (BSQ) a 78,9% (ESA). Individuos com excesso de peso apresentaram maior chance de insatisfacao (BSQ: OR 3,66, p<0,001; ESA: OR 4,108, p<0,001). O mesmo ocorreu para meninas e individuos no periodo inicial da adolescencia (p<0,05). Conclusoes: A prevalencia de insatisfacao com a imagem corporal foi baixa entre os adolescentes das cidades pequenas de Minas Gerais, porem a maioria desejava uma silhueta diferente da atual. Os resultados mostraram maior insatisfacao entre os participantes no periodo inicial da adolescencia, assim como nos do sexo feminino e naqueles com excesso de peso.

Maturación somática y composición corporal en adolescentes eutróficos del sexo femenino con o sin adecuación de grasa corporal

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 (G1), eutrophic with adequate body fat percentage, and Group 2 (G2), eutrophic with high body fat percentage. The somatic maturation was assessed by the formula for estimating the Peak Height Velocity (PHV). Results: The PHV had higher average score in G1 adolescents compared to G2 (0.26 versus 0.05; p=0.032). There was an association between G1, G2 and the somatic maturation (p=0.049). The female adolescents before and during PHV presented higher values of fat body BMI (p=0.034) and percentage of central fat (p=0.039) compared to the adolescents after PHV. There was a correspondence between before PHV stage and the excess of body fat (α=0.751). Conclusions: There was an association between somatic maturation and body composition in eutrophic female adolescents. Length, BMI and fat percentage were different among the somatic maturation stages. It is relevant to evaluate the somatic maturation and the changes occurring in the body composition during adolescence in order to better evaluate and manage the nutritional status and the body fat excess.Objective: To evaluate the relationship between the stages of somatic maturation and body composition in eutro - phic female adolescents with or without exce...