Dudas Robert A, Crocetti Michael
Division of General Pediatrics and Adolescent Medicine, Department of Pediatrics, Johns Hopkins University, and Johns Hopkins Bayview Medical Center, Baltimore, MD 21224, USA.
Ambul Pediatr. 2008 Nov-Dec;8(6):392-5. doi: 10.1016/j.ambp.2008.08.001. Epub 2008 Oct 2.
Obesity is the most common chronic disease of childhood. Although it is accepted that diet and exercise practices are important, there is little data to discern the contributions of specific activities toward a healthy body weight. We sought to identify associations between bicycling and overweight status and to compare this with other physical activities and dietary practices thought to be protective against overweight status.
We constructed a survey to gather dietary and activity practices in a cross-sectional, convenience sample of 100 children presenting to an urban hospital setting in Baltimore, Maryland. We chose to emphasize bicycling because it is a widely available activity that requires a sustained level of moderate energy expenditure, yet little is known about the relationship of this particular activity with childhood overweight status.
The mean age of our population was 11.8 years and 56% were overweight (body mass index>85 percentile). Most (96%) knew how to ride a bike and 80% reported owning a bike. Children who rode a bike just once a week or less were the most likely to be overweight (multivariate-adjusted odds ratio 6.6, 95% confidence interval, 2.1-21). This association was stronger than for all other dietary and activity practices. We found that approximately half of our participants do not eat breakfast, fruits, or vegetables regularly. More than half never ride a bike to school, walk to school, or participate in any organized sport.
Riding a bicycle at least 2 or more days during the week is associated with a decreased likelihood of being overweight during childhood.
肥胖是儿童期最常见的慢性疾病。尽管人们公认饮食和运动习惯很重要，但几乎没有数据能区分特定活动对健康体重的影响。我们试图确定骑自行车与超重状态之间的关联，并将其与其他被认为有助于预防超重的体育活动和饮食习惯进行比较。
我们构建了一项调查，以收集马里兰州巴尔的摩市一家城市医院的100名儿童横断面便利样本中的饮食和活动习惯。我们选择强调骑自行车，因为它是一项广泛可及的活动，需要持续的中等能量消耗，但对于这项特定活动与儿童超重状态之间的关系知之甚少。
我们研究人群的平均年龄为11.8岁，56%超重（体重指数>第85百分位）。大多数（96%）儿童知道如何骑自行车，80%报告拥有自行车。每周骑自行车一次或更少的儿童超重的可能性最大（多变量调整优势比为6.6，95%置信区间为2.1 - 21）。这种关联比所有其他饮食和活动习惯都更强。我们发现约一半的参与者不经常吃早餐、水果或蔬菜。超过一半的人从不骑自行车上学、步行上学或参加任何有组织的运动。
每周至少骑自行车2天或更多天与儿童期超重可能性降低有关。
