Nutrition and Physical Activity Policies, Obesogenic Behaviors and Weight Outcomes
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 2,635
- 主要终点
- Change in Percentage of Children Meeting Physical Activity Policy
研究概览
简要总结
The investigators long-term goal is to advance the adoption and successful implementation of policies that promote PA and nutrition in after school programs (ASP) nationwide. The investigators objective here is two fold. First, the investigators will test the effectiveness of two promising strategies designed to 1) increase the amount of PA children accumulate while attending an ASP and 2) promote changes in the nutritional quality of the snacks served. This represents a fundamental step in establishing practice-based guidelines (best practices) for the uptake and achievement of public health policy goals (CA and Harvard). Second, the investigators will examine the barriers and facilitators to implementing these strategies. The expected outcome of this study is evidence supporting best practices for ASPs to employ to meet policy goals.
详细描述
The investigators will use a 3-year delayed treatment, cluster randomized controlled trial design with 20 ASPs that serve mostly low-income and minority children (approximately 1300 children ages 6-12yrs) in Columbia, SC and address the following specific aims: Aim 1. Evaluate the impact of a staff-level intervention, a professional development training program focused on core competencies to promote physical activity, on children's physical activity levels; Aim 2. Evaluate the impact of a site-level intervention, a snack modification program that includes a discount buying program, on the quality of snacks served and consumed; and Aim 3. Evaluate the implementation of the staff-level and site-level interventions and identify organizational, staff, and setting characteristics that influence the process of implementing these strategies.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- None
入排标准
- 年龄范围
- 6 Years 至 12 Years（Child）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Programs that:
- •Operate immediately after the school day
- •Operate every day of the school year for a minimum of 2 hours
- •Serve a minimum of 30 children of elementary age (6-12 years)
- •Operate in a school, community or faith Setting
- •Provide a snack
- •Provide homework assistance/completion time
- •Provide enrichment
- •Provide opportunities for physical activity
- •All children enrolled, staff, and afterschool program (ASP) leaders in the ASPs were eligible to participate in the study.
排除标准
- •Programs that:
- •Were singularly focused
- •Programs that were physical activity focused
- •Children that:
- •Have any physical and/or orthopedic impairment that would limit a child's ability to participate in regular physical activity.
结局指标
主要结局
Change in Percentage of Children Meeting Physical Activity Policy
时间窗: Spring of Year 1, Year 2, and Year 3
We will assess the number of children meeting the physical activity policy of 30 minutes or more of moderate-to-vigorous physical activity. The primary physical activity (PA) and sedentary behavior outcome was derived via accelerometry. All children attending an ASP on unannounced measurement days had an opportunity to wear the ActiGraph GT3X+. The accelerometers were distilled using 5-second epochs. When children arrived to a program, they were fitted with an accelerometer and the arrival time was recorded (monitor time on). Before a child departed from a program, research staff removed the belt and recorded the time of departure (monitor time off). Children wore the monitors for their entire attendance at the ASPs. Cutpoint thresholds associated with moderate and vigorous activity were used to distill the PA intensity levels and sedentary behavior. Children were considered to have a valid day of accelerometer data if their total wear time (time off minus time on) was ≥60 minutes.
次要结局
- Changes in Nutritional Quality of Snacks(Spring of Year 1, Year 2, and Year 3)
研究者
Michael Beets
Dr. Michael W. Beets, PhD
University of South Carolina