Clinical trial NCT02793024: Shopping Smart - Adolescent Intervention to Improve Shopping Practices Where You Live and Learn
Official title: Shopping Smart - Adolescent Intervention to Improve Shopping Practices Where You Live and Learn
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Food Choices
Keywords: food shopping intervention
Lead sponsor: University of Kentucky
Sponsor class: OTHER
Collaborators: name: East Carolina University
First posted: 2016-06-08
Enrollment: 400
Sex: ALL
Minimum age (years): 14
Maximum age (years): 15
Standard ages: CHILD
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: PARALLEL
Primary purpose: PREVENTION

Brief summary: The objective of this project is to develop and test the effectiveness of a Cooperative Extension enhanced intervention titled "Smart Shopping," aimed at improving the shopping practices of adolescents with the ultimate goal of increasing fruit and vegetable intake. To achieve this goal, the investigators will conduct formative research (Year 1) via a community-wide analysis of the school, home and neighborhood food environments. In collaboration with Extension staff and faculty, this formative research will provide insight into the development and enhancement of the "Smart Shopping" curriculum (adapted from the "Cooking Matters" Extension curriculum, Year 2). In Years 3-4, the investigators will implement a randomized controlled intervention trial to examine the effectiveness of the developed intervention "Smart Shopping" to improve adolescents' purchasing and consumption behaviors. The investigators will implement the trial in Year 3, and evaluate results in Year 4. Our education component will include training of University dietetics interns, graduate, and undergraduate students to implement and evaluate the intervention with oversight by project staff as part of their service learning requirements. This project is unique as it: 1) takes into account the role that school wellness policies and school environment have in food procurement during the day; 2) incorporates information from multiple levels of the social ecological framework (home, school, and community food environments, as well as the social influence of peers) to create an intervention that addresses influences on adolescents purchasing and consumption behaviors where they live and learn; 3) collaborates with Extension faculty and staff while enhancing an existing program; 4) utilizes and hones the skill sets of students in undergraduate and graduate level nutrition and dietetics programs.

Detailed description: Overview of the study - To achieve sustained healthy behavior changes, a supportive context is needed. For example, adolescents who are trying to consume more fruits and vegetables, fewer sugary beverages, and more water may be challenged in these pursuits as they may be inundated with low-cost, easily available, highly processed foods and beverages. The intervention will take into account the multiple sectors of influence on behavior among adolescents recently recommended. This project moves beyond understanding the interaction between the individual with their environment and seeks to develop and examine the effectiveness of an intervention aiming to improve how adolescents make healthy choices in a variety of food environments and in a variety of social settings.

Overview - This project includes collection of primary data in Year 1 to inform the curriculum development of the "Smart Shopping" intervention in Years 2 and 3. The intervention will take place among 4 schools (2 in KY and 2 in NC) with 4 delayed - control schools (2 in KY and 2 NC). This individual-level intervention will be tailored based on the food environment factors of each site. The key food environmental variables that will be addressed will be school policy adoption and implementation of School Wellness Policies, availability of food within the home, as well as the availability and access to various food venues in each county. After baseline data are collected, the curriculum will be developed reflecting the shopping behaviors of adolescents in these counties. The curriculum will utilize current Cooperative Extension resources from "Cooking Matters," but will be tailored and significantly revised for adolescents using the formative data collected in year 1. The curriculum will be developed with Cooperative Extension agents in each county while connecting with dietetics and nutrition students. The intervention will take place over 12 weeks, once a week, after school but before athletic or school sponsored activities begin. The intervention session will be led by nutrition and dietetics students, with oversight by Cooperative Extension agents and project team. Process evaluation will take place in year 2 and 3 of the study, while main intervention outcome evaluation will take place in year 4 led by project team.

Eligibility criteria: Inclusion Criteria:

* To be eligible for participation, the adolescent must provide assent and the primary caregiver must provide consent for their child to participate.
* The adolescents must have resided in the county for at least 1 year, plan to reside in the county for at least 1 year, speak English as the primary language, and not report any serious illness that would alter their dietary patterns, such as diabetes or Crohn's disease.
* If there is more than one adolescent in the household within the age range, the adolescent and the primary caregiver will decide which adolescent will participate in the project.

Primary outcomes:
measure: Number of beverage choices per week at baseline and post intervention
timeFrame: 12 weeks
measure: Number of fruit and vegetable servings per week among adolescents at baseline and post intervention
timeFrame: 12 weeks
Secondary outcomes:
measure: Availability of fruits and vegetables, water, and sugar-sweetened beverages where adolescents live and shop at baseline and post intervention among intervention and control participants.
timeFrame: 12 weeks
measure: Frequency of shopping at various food venues baseline and post intervention among intervention and control participants.
timeFrame: 12 weeks
Other outcomes:
Locations:
city: Lexington
country: United States
facility: University of Kentucky
state: Kentucky
Study officials:
affiliation: University of Kentucky
name: Alison Gustafson, PhD
role: PRINCIPAL_INVESTIGATOR
References: