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ResumoObjetivos: Identifi car a prevalência de insatisfação com a imagem corporal e de sintomas de anorexia e bulimia em adolescentes do sexo feminino da cidade de Santa Maria (RS) e verifi car a associação da insatisfação com a imagem corporal, estado nutricional, adiposidade corporal e sintomas de anorexia e bulimia. Método: Foram analisadas 258 adolescentes do sexo feminino (11 a 13 anos), estudantes de escolas públicas. Aplicou-se o Body Shape Questionnaire e o Teste de Atitudes Alimentares (EAT-26). Foram calculados o índice de massa corporal e o percentual de gordura. Foram utilizados o teste quiquadrado e a regressão logística. Resultados: A prevalência de insatisfação com a imagem corporal foi de 25,3% e a de sintomas de anorexia e bulimia foi de 27,6%. A insatisfação com a imagem corporal apresentou associação com o estado nutricional, sendo que as adolescentes com excesso de peso apresentaram maior insatisfação (razão de chances = 2,64; intervalo de confi ança de 95% 1,02-6,83). Conclusões: As prevalências de insatisfação corporal e sintomas de anorexia e bulimia foram elevadas. O estado nutricional parece ser o melhor preditor da insatisfação corporal. Descritores: Imagem corporal, anorexia, bulimia, antropometria. AbstractObjectives: To identify the prevalence of body image dissatisfaction and anorexia and bulimia symptoms in adolescent girls from the city of Santa Maria, Brazil, and to determine the association of body image dissatisfaction with nutritional status, body fat, and anorexia and bulimia symptoms. Method: We investigated 258 adolescent girls (11 to 13 years) from public schools. The Body Shape Questionnaire and the Eating Attitudes Test (EAT-26) were used. Body mass index and percent body fat were calculated. The chi-square test and logistic regression were used. Results: The prevalence of body image dissatisfaction was 25.3% and the prevalence of anorexia and bulimia symptoms was 27.6%. Body image dissatisfaction was associated with nutritional status, with overweight girls presenting higher dissatisfaction (OR = 2.64; 95%CI 1.02-6.83). Conclusions:The prevalence rates of body image dissatisfaction and anorexia and bulimia symptoms were high. Nutritional status seems to be a better predictor of body image dissatisfaction.

ResumoIntrodução: O objetivo do estudo foi verificar a associação entre insatisfação com a imagem corporal e dois indicadores de estado nutricional em universitários brasileiros, assim como identificar o melhor preditor de insatisfação com a imagem corporal em universitários brasileiros. Métodos: Trata-se de um estudo transversal, realizado com 256 universitários (128 homens). Foram coletados dados demográficos (sexo e idade), antropométricos (massa corporal, estatura e espessura de dobras cutâneas) e de imagem corporal (silhueta atual e silhueta ideal). O índice de massa corporal (< 18,5 ou ≥ 25,0 kg/m² = inadequado) e o somatório de espessura de cinco dobras cutâneas (≤ 30 ou ≥ 62 e ≤ 43 ou ≥ 76 mm = inadequado, para homens e mulheres, respectivamente) foram derivados subseqüentemente. A análise incluiu estatística descritiva, teste de proporção, qui-quadrado e regressão logística. Resultados: A média de idade dos indivíduos foi de 23,1 anos (desvio padrão = 5,3), e a freqüência de insatisfeitos com a imagem corporal foi de 78,8%. A insatisfação com a imagem corporal não se associou ao sexo e ao índice de massa corporal. A análise multivariada demonstrou que a odds ratio associada ao somatório de espessura de cinco dobras cutâneas inadequado foi de 2,56. Conclusão: O índice de massa corporal não foi determinante de insatisfação com a imagem corporal, enquanto o somatório de espessura de cinco dobras cutâneas mostrou-se um preditor significativo desse distúrbio, independentemente do sexo. Descritores: Imagem corporal, estado nutricional, estudantes, auto-imagem. AbstractIntroduction: The objective of this study was to investigate the association between body image dissatisfaction and two indicators of nutritional status in Brazilian university students, and also to identify the best predictor of body image dissatisfaction in Brazilian university students. Methods: This was a cross-sectional study of 256 university students (128 males). Data were collected on demographics (age and sex), anthropometrics (body mass, stature and skinfold thickness), and body image (current silhouette and ideal silhouette). Body mass index (< 18.5 or ≥ 25.0 kg/m² = abnormal) and the sum of five skinfolds (≤ 30 or ≥ 62 and ≤ 43 or ≥ 76 mm = abnormal, for men and women, respectively) were then calculated. The analysis included descriptive statistics, proportionality testing, chi-square test and logistic regression. Results: Mean age of the sample was 23.1 years (standard deviation = 5.3) and the frequency of body image dissatisfaction was 78.8%. Body image dissatisfaction was not associated with sex or body mass index. The multivariate analysis demonstrated that the odds ratio for abnormal sum of five skinfolds was 2.56. Conclusion: Body mass index was not a determinant of body image dissatisfaction, whereas the sum of five skinfolds proved to be a significant predictor of this disorder, irrespective of sex.

Motivos e prevalência de insatisfação com a imagem corporal em adolescentesReasons and prevalence of body image dissatisfaction in adolescents (masculino = 54,5%, feminino = 65,7%; p < 0,05 (anorexia, bulimia and vigorexia).

This article seeks to determine the prevalence of dissatisfaction with body image and its association with socio-demographic factors and nutritional status among adolescents. The following socio-demographic data, anthropometric variables, and perception of body image (n = 660) were collected. The prevalence of dissatisfaction with body image was 71.4%. Girls wished to reduce the size of their body silhouette, whereas boys wished to increase it. The desire to reduce body size was positively associated with female gender, with increased waist circumference and with excess weight. On the other hand, the desire to increase body size was negatively associated with the female gender and waist circumference, and was positively associated with ages 16, 17 and 18 + 19 years. Dissatisfaction with body image is highly prevalent among adolescents, though it is manifested differently in boys and girls. Increased abdominal fat, excess weight and female gender were predictors of dissatisfaction due to excess weight, and male gender and advanced age were predictors of dissatisfaction due to thinness.

Body image dissatisfaction among rural and urban adolescents To identify the prevalence of body image dissatisfaction among adolescents living in rural and urban areas, and to analyze the influence of demographic and anthropometric variables on body image dissatisfaction. A total of 629 adolescents aged 13 to 17 years from urban and rural areas participated in the study. Demographic variables (gender, age, area of residence), anthropometric measurements (body weight, height, skinfold thickness) and body image data were collected. BMI (underweight: <18,5 kg/m²; normal weight: between 18,5 and 25,0 kg/m²; overweight: > 25 kg/m²) and the sum of two skinfold thicknesses, Σ2SF (girls: low: <16 mm, ideal: between 16 and 36 mm, high: >36 mm; boys: low: <12 mm, ideal: between 12 and 25 mm, high: >25 mm) were then calculated. The prevalence of body image dissatisfaction was similar (p≥0,05) among rural (64,2%) and urban adolescents (62,8%). Boys wished to increase the size of their body silhouette (41,3%), whereas girls wished to reduce it (50,5%) (p<0,001). Adolescents with low and excess weight based on BMI and with high Σ2SF presented a 3,14, 8,45 and 2,08 times higher chance of body image dissatisfaction, respectively. A high prevalence of body image dissatisfaction was observed among adolescents from rural and urban areas. An unhealthy nutritional status and body adiposity increase the chances of body image dissatisfaction. These findings emphasize the social pressure on girls to remain slim and on boys to attain an athletic body.

Objetive: To analyze the physical fitness of Brazilian schoolchildren, according to a health-referenced criteria assessment. Methods: This was a cross-sectional, school-based, epidemiological study of 7,507 schoolchildren (4,114 boys and 3,393 girls) aged 7 to 10 years. The following variables were measured: body weight, height, flexibility (sit-and-reach), muscle strength/resistance (1 minute modified abdominal) and cardiorespiratory fitness (9-minute walk/run). The criteria and classifications used for the motor tests were recommended by the Physical Best. Results: The motor tests demonstrated low physical fitness, representing health risk in terms of flexibility (boys: 58.3%; girls: 51.2%, p<0.001), muscle strength/resistance (boys: 75.3%; girls: 73.8%, p<0.001) and cardiorespiratory fitness (boys: 80.8%; girls: 77.6%, p<0.001). The overall classification derived from all the three motor tests showed that very high proportion of the schoolchildren (~96%) did not meet the pre-established cut-offs for a satisfactory level of physical fitness. Conclusions: Effective intervention programs promoting changes in physical fitness standards are needed in order to contribute to the development of healthier levels of motor performance, especially based on public policy initiatives that provide opportunities for physical activity and sports in neighborhoods, parks and condominiums.

Objective: To compare the growth of Brazilian children and adolescents with reference growth charts.Methods: School-based cross-sectional study involving 41,654 students (23,328 boys and 18,326 girls) aged 7 to 17 years. Physical growth variables (body weight, height) and body mass index (BMI) were measured. Height, 50th percentile, and BMI, 85th percentile, were compared with the World Health Organization (WHO) reference values, and weight, 50th percentile, was compared with the Centers for Disease Control and Prevention (CDC) growth charts. Results:Mean height and body weight of Brazilian schoolchildren were generally higher than the WHO and CDC reference values for both genders at most ages. BMI values of Brazilian schoolchildren were significantly lower than the WHO obesity values at all ages. Conclusion:The growth in body weight, height, and BMI of children and adolescents in the urban area of Brazil is increasingly similar to those reported in developed countries. Further prospective studies should be conducted in Brazil comparing their results with the international growth charts to enable more accurate inferences.J Pediatr (Rio J). 2010;86(2):115-120: Growth, anthropometry, child health, adolescent health, cross-sectional studies. ResumoObjetivo: Comparar crianças e adolescentes brasileiros com curvas de referência para crescimento físico. Resultados: Ao comparar os valores de estatura e peso corporal de ambos os sexos com os valores de referência da OMS e do CDC foi identificado que os jovens brasileiros atingiram e ultrapassaram os pontos de referência na maioria das idades. Os IMC dos escolares brasileiros foram inferiores aos valores de sobrepeso da OMS para todas as idades. Métodos Conclusão:A magnitude de crescimento em peso corporal, estatura e IMC de crianças e adolescentes da zona urbana do Brasil está cada vez mais semelhante à reportada em países desenvolvidos. Sugere-se que estudos prospectivos no Brasil sejam realizados e comparados com curvas internacionais de crescimento físico a fim de poder realizar inferências mais precisas. Artigo submetido em 20.08.09, aceito em 04.12.09. J Pediatr (Rio J)