Department of Public Health Sciences, Karolinska Institutet, Stockholm, Sweden.
Obes Facts. 2011;4(4):319-23. doi: 10.1159/000330844. Epub 2011 Aug 11.
Adolescents' perception of overweight often disagrees with objective measurements; if factors explaining this discrepancy are potentially modifiable is unclear.
We analyzed cross-sectional data from a cohort of 2,001 Swedish adolescents (1,026 females, 975 males) at the age of 15 years in 2003. Erroneous perception of overweight was defined as the perception of being overweight in relation to normal or lower than normal BMI (kg/m(2)). BMI measured by the school nurse at 11 years, school-based education on nutrition/physical activity, smoking, alcohol consumption, physical activity, and healthy/unhealthy eating were examined as potential predictors/correlates of overweight misperception in multivariate logistic regression models.
At the age of 15 years, 32% of girls and 10% of boys misclassified themselves as overweight. Overweight at 11 years predicted misperception of overweight 4 years later (adjusted odds ratio (OR) = 2.3, 95% confidence interval (95% CI) = 1.4-3.6 in boys; OR = 1.9, 95% CI = 1.3-2.8 in girls). Among girls, smoking was associated with a higher probability of misperception (adjusted OR = 1.6, 95% CI = 1.2-2.2). Among boys, physical activity (>6 h/ week) was associated with a lower probability of misperception (OR = 0.4, 95% CI = 0.2-0.7). No association was observed with school-based education on nutrition and physical activity.
Preventing overweight in pre-adolescence may be a way to avoid later unjustified weight concerns in adolescence.
青少年对超重的感知往往与客观测量结果不一致;如果这种差异的解释因素是潜在可改变的,目前尚不清楚。
我们分析了 2003 年 2001 名瑞典青少年(女性 1026 名,男性 975 名)在 15 岁时的横断面数据。超重感知错误被定义为相对于正常或低于正常 BMI(kg/m²)感知超重。在多元逻辑回归模型中,通过学校护士在 11 岁时测量的 BMI、基于学校的营养/体育活动教育、吸烟、饮酒、身体活动和健康/不健康饮食,作为超重误判的潜在预测因素/相关因素进行了检查。
在 15 岁时,32%的女孩和 10%的男孩错误地将自己归类为超重。11 岁时超重预测 4 年后超重感知错误(男孩调整后的优势比(OR)为 2.3,95%置信区间(95%CI)为 1.4-3.6;女孩调整后的 OR 为 1.9,95%CI 为 1.3-2.8)。在女孩中,吸烟与更高的误判概率相关(调整后的 OR = 1.6,95%CI = 1.2-2.2)。在男孩中,每周进行>6 小时的体育活动与误判概率较低相关(OR = 0.4,95%CI = 0.2-0.7)。基于学校的营养和体育活动教育与误判无关联。
在青春期前预防超重可能是避免青春期后不合理体重担忧的一种方法。