Pilot Study on Bicycle Trains to Improve Children's Physical Activity

自行车列车改善儿童身体活动的试点研究

• 批准号: 8607590
• 负责人: Jason A Mendoza
• 金额: $ 11.1万
• 依托单位: SEATTLE CHILDREN'S HOSPITAL
• 依托单位国家: 美国
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-02-01 至 2016-01-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8607590
• 关键词: Address; Adult; Affect; Age; Agreement; Algorithms; Bicycling; Cardiovascular Diseases; Child; Childhood; Clinical Trials Design; Commuting; Data; Environment; Epidemic; Funding; Future; Generations; Goals; Healthy People 2020; Heart Rate; Information Systems; Intervention; Life; Location; Low income; Malignant Neoplasms; Measures; Metabolic; Methods; Middle School Student; Modeling; Monitor; Motor Skills; Motor Vehicles; Non-Insulin-Dependent Diabetes Mellitus; Obesity; Obesity associated disease; Participant; Physical activity; Pilot Projects; Policies; Population; Positioning Attribute; Protocols documentation; Public Health; Publishing; Randomized Controlled Trials; Recruitment Activity; Research; Risk; Risk Factors; Route; Schools; System; Testing; Training; Training Programs; Validation; Walking; cardiovascular disorder risk; cost; elementary school; ethnic minority population; fifth grade; fourth grade; high risk; improved; innovation; instrument; lifetime risk; obesity in children; obesity prevention; obesity risk; prevent; programs; public health relevance; social; socioeconomics; trend

DESCRIPTION (provided by applicant): Physical activity decreases the risk of cardiovascular disease, Type 2 Diabetes, and multiple cancers, and is important for obesity prevention. US children's active commuting to school (ACS; walking or cycling to school), previously common (48% in 1969) is now uncommon (13% in 2009). This decline coincided with the obesity epidemic, which disproportionately affects low-income and ethnic minority children. Programs to increase children's moderate-to-vigorous physical activity (MVPA) and lower obesity risk are necessary. The Bicycle Train is an innovative program in which children cycle to and from school led by adults. Bicycle Trains provide another option for ACS, especially for children who live too far to walk to school. No randomized controlled trials (RCT) have evaluated Bicycle Trains and children's ACS or MVPA. Increasing the percent of children who cycle to school is sub-objective PA-14 of US Healthy People 2020. The Primary Goals are to (a) conduct a pilot cluster RCT of a Bicycle Train program among low- income, ethnic minority 4th and 5th grade children and (b) collect concurrent accelerometer and GPS data and validate algorithms to identify and measure physical activity intensity and duration for children's cycling compared to heart rate monitors. This pilot study will provide feasibility data and extend the validity of quantifying cycling-related MVPA for a future fully-powered R01-funded Bicycle Train cluster RCT. Our Specific Aims will be to: SA1) evaluate among 80 4th and 5th grade ethnic minority children the feasibility of a pilot cluster RCT of a Bicycle Train program for (a) recruiting participants for a planned full-scale cluster RCT (b) promoting their participation, and (c) identifying barriers/facilitators to their participation; and SA2) validate algorithms examining concurrent accelerometry and GPS data to identify and measure children's physical activity intensity and duration while cycling compared to the criterion standards of heart rate monitoring and direct observation Feasibility Criteria: As recommended for pilot studies, in which the main goal is to test feasibility of a research protocol, a fully powered R01-funded cluster RCT will be determined to be feasible if: FC 1) We successfully recruit 80 low-income 4th and 5th grade children for the pilot Bicycle Train cluster RCT FC 2) The intervention children participate in the Bicycle Train program on average twice/week or more FC 3) Algorithms analyzing concurrent GPS and accelerometer data have high agreement, i.e. >90% agreement, with heart rate data/direct observation in distinguishing children's cycling-related physical activity duration an intensity from other physical activities and riding in a motor vehicle This R21 application will provide important planning and methods validation targeted towards ethnic- minority children, the population at highest risk for childhood obesity in the US.

描述（由申请人提供）：体育活动可以降低心血管疾病、2型糖尿病和多种癌症的风险，对预防肥胖很重要。美国儿童主动通勤上学（ACS；步行或骑自行车上学），以前很常见（1969年为48%），现在不常见（2009年为13%）。这种下降与肥胖的流行相吻合，肥胖对低收入和少数民族儿童的影响尤为严重。增加儿童中高强度体育活动（MVPA）和降低肥胖风险的计划是必要的。“自行车列车”是一个创新项目，孩子们在大人的带领下骑车上下学。自行车列车为ACS提供了另一种选择，特别是对于那些住得太远无法步行上学的孩子。没有随机对照试验（RCT）评估自行车列车和儿童ACS或MVPA。提高骑车上学儿童的比例是《美国健康人2020》的次级目标PA-14。主要目标是(a)在低收入、少数民族四年级和五年级儿童中开展自行车列车计划的试点集群随机对照试验(b)收集同步加速度计和GPS数据，并验证算法，以识别和测量儿童骑自行车的体力活动强度和持续时间，并与心率监测仪进行比较。该试点研究将为未来的全动力r01资助的自行车列车集群RCT提供可行性数据，并扩展量化与自行车相关的MVPA的有效性。我们的具体目标将是：SA1)在80名四年级和五年级少数民族儿童中评估自行车列车项目试点集群随机对照试验的可行性(a)为计划的全面集群随机对照试验招募参与者(b)促进他们的参与，以及(c)确定阻碍他们参与的障碍/促进因素；和SA2)验证算法检查并发加速度计和GPS数据，以识别和测量儿童在骑行时的身体活动强度和持续时间，并与心率监测和直接观察的标准标准进行比较。可行性标准：作为试点研究的建议，主要目标是测试研究方案的可行性，r01资助的全动力集群RCT将被确定为可行，如果：1)我们成功招募到80名低收入家庭的4、5年级的孩子参加了试点的Bicycle Train集群RCT