Out of School Nutrition and Physical Activity Initiative

Project Description

The Out of School Nutrition and Physical Activity Initiative (OSNAP), works with out of school time (OST) programs to improve nutrition- and physical activity-related practices, environments, and policies.

OSNAP promotes actions to help partner sites achieve the following goals: 1) include 30 minutes of moderate, fun, physical activity for every child every day; offer 20 minutes of vigorous physical activity three times per week; 2) ban sugar-sweetened drinks from being served or brought to program; 3) offer water as a beverage at snack every day; 4) eliminate use of commercial broadcast TV/movies; limit recreational computer time to less than one hour per day; 5) offer a fruit or vegetable option every day; and 6) ban foods with trans fats.girl swinging (girl_swinging_000009136748xsmall.jpg)

With our community partners, OSNAP identifies and supports sustainable policy and environmental strategies that promote increased access to healthy snacks and opportunities for physical activity that can be used in a variety of OST settings.

Researchers have examined students’ physical activity levels and snack and beverage intake through accelerometer wear, examination of plate waste, on-site observations, and policy analysis at baseline and at the end of the school year.

boy_apple_water (boy_apple_water_000013621451xsmall.jpg)The OSNAP initiative has been broadly disseminated throughout Massachusetts; tools and resources are available on our interactive website to help afterschool programs introduce healthy snacks and drinks and encourage physical activity in their programs. The OSNAP online program assessments, learning communities, and action planning process help guide afterschool program staff and organizational leaders through the process of improving out of school time program practices and policies related to healthy foods, drinks, and physical activity.

Full Website: osnap.org
Principal Investigator:
Steven Gortmaker
Centers for Disease Control and Prevention
Funding Dates:
2009 – 2015 
Contact: Catherine Giles


Lee RM, Emmons KM, Okechukwu CA, Barrett JL, Kenney EL, Cradock AL, Giles CM, de Blois ME, Gortmaker SL. Validity of a practitioner-administered observational tool to measure physical activity, nutrition, and screen time in school-age programs. Int J Behav Nutr Phys Act. 2014 Nov 28;11(1):145.

Kenney EL, Austin SB, Cradock AL, Giles CM, Lee RM, Davison KK, Gortmaker SL. Identifying Sources of Children’s Consumption of Junk Food in Boston After-School Programs, April-May 2011. Prev Chronic Dis. 2014 Nov 20;11:E205.

Lee RM, Okechukwu C, Emmons KM, Gortmaker SL. Impact of implementation factors on children’s water consumption in the Out-of-School Nutrition and Physical Activity group-randomized trial. New Dir Youth Dev. 2014 Sep;2014(143):79-101.

Kenney EL, Giles CM, deBlois ME, Gortmaker SL, Chinfatt S, Cradock AL. Improving nutrition and physical activity policies in afterschool programs: results from a group-randomized controlled trial. Prev Med. 2014 Sep;66:159-66.

Giles CM, Kenney EL Gortmaker SL, Lee RM, Thayer JC, Mont-Ferguson H, Cradock AL. Increasing water availability during afterschool snack: evidence, strategies, and partnerships from a group randomized trial. Am J Prev Med. 2012 Sep;43(3 Suppl 2):S136-42.