背景:由于从儿童到成年的研究费用很高,因此评估终身体重轨迹具有挑战性。轮廓尺度的使用已成为评估整个生命中的身体形状轨迹作为体重轨迹的代理的一种新方法。根据身体形状轨迹,个体在成年期可能更容易患疾病。因此,确定与之相关的因素对公共卫生至关重要。这项研究旨在评估整个生命周期中的身体形状轨迹,并验证它们之间的关联,出生体重,身体质量指数,和巴西队列中的社会人口状况。
方法:这是对成人健康纵向研究(ELSA-Brasil)首次随访数据收集的14,014名参与者进行的横断面分析。ELSA-Brasil是一项多中心前瞻性队列研究,始于2008年,对东北地区六个公共机构的公务员进行了研究,巴西南部和东南部地区。我们将聚类方法应用于纵向数据,以识别5至40岁的身体形状轨迹,并评估这些轨迹与出生体重之间的关联。身体质量指数和社会人口状况(种族,教育,产妇受教育程度和家庭月人均收入)采用多重对应分析。
结果:我们发现了女性的五种体形轨迹和男性的三种体形轨迹。低出生体重与形状的轻度至中度增加有关。高出生体重与男女保持较大的体型和女性的体型显着增加有关。较高的社会人口统计学地位和白人种族与男性的体型显着增加和女性的中等体型保持有关。
结论:研究表明,与终生体重状况较差有关的变量(通过人体测量学评估),比如肥胖的存在,也与更糟糕的身体形状轨迹有关,用剪影量表评估。我们的结果表明,体形轨迹是体重轨迹的良好指标,并且在无法进行队列研究时可以使用。
Evaluating lifelong weight trajectories is challenging due to the high costs of studies that follow individuals from childhood to adulthood. The use of silhouette scales has been a new approach to assess the body shape trajectory across life as a proxy for body weight trajectory. Depending on body shape trajectories, individuals may be more prone to develop diseases in adulthood. Therefore, identifying factors related to them is essential for public health. This
study aimed to evaluate body shape trajectories across the lifespan and to verify associations between them, birth weight, body mass index, and sociodemographic conditions in a Brazilian cohort.
This is a cross-sectional analysis conducted with 14,014 participants of first follow-up data collection of Longitudinal
Study of Adult Health (ELSA-Brasil). ELSA-Brasil is a multicentric prospective cohort
study initiated in 2008 with civil servants of six public institutions in the Northeast, South and Southeast regions of Brazil. We applied a clustering method to longitudinal data to identify body shape trajectories from 5 to 40 years of age and assessed the associations between these trajectories and birth weight, body mass index and sociodemographic conditions (race, education, maternal education and monthly per capita family income) using multiple correspondence analysis.
We found five body shape trajectories for women and three for men. Low birth weight was associated with a slight to moderate increase in shape. High birth weight was associated with maintaining large body size in both sexes and markedly increased body shape in women. Higher sociodemographic status and white race were associated with marked increases in body shape in men and maintenance of medium body shape in women.
The
study shows that variables related to worse lifetime weight status (evaluated by anthropometry), such as presence of obesity, are also associated with worse body shape trajectories, as assessed with silhouette scales. Our results suggest that body shape trajectories are a good indicator of body weight trajectories and may be used when cohort studies are not possible.