The prevalence of obesity among America's youth has increased rapidly over the past 30 years. Obesity is the most common disorder among youth and a major cause of excess morbidity and subsequent mortality. Interventions to reduce obesity among young children and adolescents are particularly important because the risk of adult obesity increases markedly following obesity in adolescence. Schools are an essential channel for intervention because they offer access to large numbers of youth and can provide institutionalized programs in the communities.
|Program Title||Planet Health|
|Purpose||School-based program designed to increase physical activity and promote healthy dietary habits to reduce obesity among 6th, 7th, and 8th grade students. (1999)|
|Program Focus||Behavior Modification|
|Population Focus||School Children|
|Topic||Obesity, Diet/Nutrition, Physical Activity|
|Age||Adolescents (11-18 years)|
|Race/Ethnicity||American Indian, Asian, Black, not of Hispanic or Latino origin, Hispanic or Latino, White, not of Hispanic or Latino origin|
|Setting||School-based, Suburban, Urban/Inner City|
|Funded by||NICHD (Grant number(s): HD30780), CDC: Prevention Research Center (Grant number(s): U48/CCU115807)|
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Community Preventive Services Task Force Finding
The "Planet Health: An Interdisciplinary Curriculum for Teaching Middle School Nutrition and Physical Activity" manual is required and is available at a cost of $45.00. Additionally, teacher training materials are recommended and are available at no cost.
For your free copy, go to: http://www.hsph.harvard.edu/prc/projects.html
About the Study
Ten schools from four communities in the Boston metropolitan area were randomly assigned to receive either Planet Health or usual health curricula and physical education classes over two years. The program focused on four behavioral changes:
1. reducing television viewing to less than 2 hours per day,
2. increasing moderate and vigorous physical activity,
3. decreasing consumption of high-fat foods, and
4. increasing consumption of fruits and vegetables to 5 a day or more.
Each behavior change was addressed in one lesson per subject (language arts, math, science, and social studies), for a total of 16 core lessons each in Year 1 and Year 2. A 2-week campaign called "Power Down" was implemented to reduce television viewing in households. Physical education lessons were organized into 30, 5-minute units. Lessons focused on self-assessments of activity and inactivity levels and goal setting and evaluations for reducing inactivity, replacing inactive time with moderate and vigorous physical activities of their choosing.
- Obesity decreased among intervention girls relative to control girls; but obesity remained the same among intervention and control boys.
- Television viewing decreased for intervention girls and boys relative to control girls and boys.
- Intervention girls ate less overall and consumed more fruit and vegetables than control girls after the program; neither of these findings were true for boys.
Gortmaker SL, Peterson K, Wiecha J, Sobol AM, Dixit S, Fox MK, Laird N. (1999). Reducing Obesity via a School-Based Interdisciplinary Intervention Among Youth. Archives of Pediatric and Adolescent Medicine, 153, 409-418.
Gortmaker SL. (2002). The Role of the Physical Activity Environment in Obesity Among Children and Adolescents in the Industrialized World. Obesity in Childhood and Adolescence, 49 , 177-194.
Ludwig DS, Peterson KE, Gortmaker SL. (2001). Relation Between Consumption of Sugar-Sweetened Drinks and Childhood Obesity: A Prospective, Observational Analysis. The Lancet, 357 , 505-508.
Boynton-Jarrett R, Thomas TN, Peterson KE, Wiecha J, Sobol AM, Gortmaker SL. (2003). Impact of Television Viewing Patterns on Fruit and Vegetable Consumption Among Adolescents. Pediatrics, 112, 1321-1326.
Wiecha JL, El Ayadi AM, Fuemmeler BF, Carter JE, Handler S, Johnson S, Strunk N, Gortmaker SL. (2004). Diffusion of an Integrated Health Education Program in an Urban School System: Planet Health. Journal of Pediatric Psychology, 29(6), 467-474.
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