The Association Between Weight Perception and BMI Among High School Students

Division of Adolescent and School Health, National Center for Chronic Disease Prevention and Health Promotion, Centers for Disease Control and Prevention, Atlanta, GA 30341, USA.
Obesity research (Impact Factor: 4.95). 11/2004; 12(11):1866-74. DOI: 10.1038/oby.2004.232
Source: PubMed

ABSTRACT To assess the association between weight perception and BMI among a large, diverse sample of adolescents. This study used both measured and self-reported height and weight to calculate BMI.
A convenience sample of students (n = 2032) in grades 9 through 12 completed a questionnaire assessing demographic characteristics, self-reported height and weight, and body weight perception. These students were then weighed and had their height measured using a standard protocol.
Using BMI calculated from measured height and weight, 1.5% of students were classified as underweight or at risk for underweight, 51.2% of students were normal weight, and 47.4% were overweight or at risk for overweight. Among this same sample of students, however, 34.8% perceived themselves as underweight, 42.9% perceived themselves as about the right weight, and 22.3% perceived themselves as overweight. Even when using BMI calculated from self-reported height and weight, >20% of students who were overweight or at risk for overweight perceived themselves as underweight.
Because perception of overweight is a key determinant of adolescent nutritional habits and weight management, many students who are overweight or at risk for overweight but who do not perceive themselves as such are unlikely to engage in weight control practices. Increasing awareness of medical definitions of overweight might improve accuracy of weight perceptions and lead to healthier eating and increased physical activity.

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    • "The perception of body weight by adolescents affects eating habits, eating behavior, and weight control [9]. Misperception of body shape is important because it negatively affects future as well as present physical and mental health, such as occurrence of depression in young adulthood [8,10-15]. "
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    ABSTRACT: Background Rapid physical and emotional growth occurs during youth. Adolescence is one of the most important periods for adapting to body change and establishing an ideal body image. Body change is an important and sensitive concern for adolescents, and the values and self-conception established at this time affect various aspects of the entire life. This study aimed to investigate the prevalence and trends of weight misperception among adolescents in Korea. Methods We analyzed raw data from the 2011 Korea Youth Risk Behaviour Web-based Survey-VII (KYRBWS-VII), in which 73,474 adolescents from the middle-school first grade to the high-school third grade (aged 12–18) participated. For the multivariate logistic regression model, the dependent variable was existence of misperception (yes/no) and independent variables were sociodemographic factors. Results We found that the prevalence of weight misperception was 49.3% (overestimation, 23.7%; underestimation, 25.6%). Among male students, 65.0% underestimated their weight, whereas 62.2% of female students overestimated their weight. Multivariate logistic regression analysis revealed that gender (OR = 1.254; 95% CI = 1.214–1.294; p < 0.001) and socioeconomic status (OR = 1.173; 95% CI = 1.121–1.228; p < 0.001) were significantly associated with weight misperception. Compared with overweight/obese adolescents, adolescents whose BMI-based body weight was underweight or normal showed 2.386-times higher (OR = 2.386; 95% CI = 2.045–2.783, p < 0.001) and 32.804-times higher (OR = 32.804; 95% CI = 29.829–36.077, p < 0.001) body shape misperception, respectively. Conclusions An effective obesity intervention program for adolescents must reflect and monitor body shape perception as well as BMI, and should include subjects who overestimate as well as underestimate their weight.
    BMC Public Health 05/2014; 14(1):452. DOI:10.1186/1471-2458-14-452 · 2.26 Impact Factor
    • "In addition, in Grade 12, the digestion system was presented, although without any information regarding its relationship with obesity. Therefore, we particularly selected the grades at the high school level, because students in those grades had taken many biology and science courses and were very sensitive about obesity issues (Brener et al. 2004). "
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    ABSTRACT: Obesity is a critical global public health issue. It leads to numerous health conditions that limit the qual-ity and length of life, placing a huge burden on healthcare systems around the world. Scholars believe that the fight against obesity can be won only through multidisciplinary efforts. However, the literature on people ’s understanding of obesity is limited, perhaps because this topic does not attract the attention of educators at the appropriate level. Although existing studies show that people lack understanding about the mechanisms of obesity, most of the arguments in these papers suffer from a lack of theoretical background and methodological problems. Therefore, we conceived the present study based on a sound theory (conceptual change) in order to understand school students ’ conceptual patterns regarding weight gain, which is an important component of obesity knowledge. A written questionnaire probing the mech-anism of weight gain was distributed to 151 secondary school students in the Turkish part of Cyprus. Content analysis was applied to students ’ compositions. The results showed that students have six major conceptual patterns about weight gain. They also hold a range of misconceptions and misunderstandings, and sometimes have no conceptions. At the end of the paper, we discuss possible curricular and teaching implications based on the patterns and incorrect knowledge structures.
    Journal of biological education 03/2014; DOI:10.1080/00219266.2014.967273 · 0.32 Impact Factor
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    • "실제체형인 비만도는 남녀 학생 모두 정상체중이 가 장 높았으나 여대생의 경우 정상체중이 실제로 56.5%인 데도 스스로는 31.9% 정도에 그치는 등 자신의 체형을 바르게 인식하지 못하고 있었으며 이는 기존 연구와 일 치하는 결과였다[6] [17] [19] [30] "
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    ABSTRACT: Targeting in-dorm university students, this study is to check body-shape perception, obesity, weight control, and obesity stress, and to figure out the effect level of each variables toward obesity stress. Data were collected by self-evaluation questionnaire from 305 respondents in dorms of a university, and the survey was conducted from May 27 to June 7 of the year 2013. As a result of the survey, both male and female students did not properly perceive their own body-shape. Female students felt that they were fat more than male students did; on the other hand, male students felt that they were skinny even though they were in standard. Females felt more obesity stress than males, and for both male and female students, more obesity resulted in deeper obesity stress. For female students, when the actual body shape is not similar to the body shape that they believe to be, they feel more obesity stress; however for male students, the result was reversed. The group that tried weight control felt more obesity stress than the other group, for both males and females. In addition, for both male and female, the group that has more will toward weight control felt more obesity stress. The effect factors that were checked through multi-variable analysis is like the following: for male students, as they feel fat and as they pay more attention to weight control, the obesity stress increased, and for female students, as they pay more attention to weight control, the obesity stress increased. Focusing on higher obesity stress groups that are distinguished through applying factors to influence on decreasing obesity stress based on the analysis result, and especially for male university students, running exercise programs at the same time for skinny bodies to gain fat would be more effective to decrease obesity stress.
    11/2013; 11(11). DOI:10.14400/JDPM.2013.11.11.573
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