On Shape and Being Shaped; The relation between overweight and obesity in London's schoolchildren and the energy-expending characteristics of their bu

自20世纪80年代以来，全球儿童超重和肥胖（COO）的患病率急剧上升。由于肥胖的流行程度和对儿童健康和福祉的长期影响，世界卫生组织认为解决肥胖是本世纪最严重的公共卫生挑战之一。尽管有大量多层次的COO研究，但其与建筑环境特征之间的关系仍未得到充分的理解。通过一种创新的方法——顺序解释性混合方法设计——我想在博士项目中研究地点和COO之间复杂的相互作用。首先，定量序列，在我的哲学硕士期间试点，空间流行病学研究将进行。依靠gis和统计方法，将搜索伦敦学童的COO与促进/阻碍体育活动的（学校）社区特征和通勤路线之间关系的一般趋势。接下来是一项定性研究，产生有关这些趋势的背景和补充信息。随着访谈，NVivo，加速度计和定性GIS将被应用于听取和分析儿童的叙述，并探索他们在实时和空间中展开的身体运动。在最后的综合阶段，定量结果将与定性结果一起扩展，旨在产生有助于公共卫生政策和干预措施的知识，以解决COO问题。

Since the '80s, global prevalence of Childhood Overweight and Obesity (COO) increased sharply. Due to its epidemic proportions and long-termimpacts on health and wellbeing of children, the WHO considers tackling obesity to be one of the most serious public health challenges of our century.Despite the plethora of multilevel COO research, its relation with characteristics of the built environment inciting energy expenditure is still insufficientlyunderstood. With an innovative approach - a sequential explanatory mixed methods design - I want to research this complex interplay between placeand COO in a PhD project. In a first, quantitative sequence, piloted during my MPhil, a spatial epidemiological study will be carried out. Relying on GISand statistical methods, general trends in the relation between COO in London schoolchildren and the characteristics of their (school) neighbourhoodsand commuting routes that foster/hinder physical activity will be searched. This is followed by a qualitative research, producing contextual andcomplementary information on these trends. Go-along interviews, NVivo, accelerometers and Qualitative GIS will be applied to hear and analyse thechildren's narratives and to explore their physical movements as they unfold in real time and space. In the final, integrative phase, the quantitativefindings will be expanded with the qualitative ones, aiming to produce knowledge that can serve public health policies and interventions to tackle COO.