Genomes and Genes
Away From Home and Out of School
Principal Investigator: D A Cohen
Abstract: The proposed study will build on information collected in our previous study, "Community Characteristics and Physical Activity among Adolescent Girls", which was an ancillary study to TAAG, Trial of Activity of Adolescent Girls. We will follow the same girls from the Minneapolis and San Diego TAAG sites and identify where they go when they are not in school or home by using portable global positioning system (GPS) units, unobtrusive devices worn on the wrist or hip that record the latitude and longitude of locations at user-specified time intervals. GPS will be combined with accelerometry and self-reports of food purchases and consumption so that we will be able to determine the context in which physical activity and eating occurs in neighborhoods. In the baseline study we found associations between neighborhood characteristics such as parks and playgrounds and physical activity, but could not determine if girls were active in these settings or whether increased levels of physical activity were due to community norms. Our specific aims are: 1) To identify the specific environmental exposures to food sources and activity venues based upon actual travel patterns of older adolescent girls. 2) To study the trajectory of physical activity in older adolescent girls, how physical activity patterns change when girls and their peers become more autonomous, and to identify the environments in which girls are physically active and the characteristics of those environments, 3) To study the trajectory of BMI among adolescent girls as they grow into adulthood and determine if eating away from home is associated with neighborhood food environments, BMI, and with changes in BMI. We will obtain both dietary and physical activity data from 300 girls at two timepoints, half will be in 10th grade at the first measurement and the other half in 11th grade. The second measurement will be in the 11th and 12th grades in order to understand how diet and physical activity change as girls become more autonomous, obtain driving licenses and spend more time in cars alone or with peers. We will analyze the data using propensity scoring and longitudinal growth models to identify how local environments may play a role in physical activity, diet and BMI. The findings will be useful to inform future community and population level interventions to promote healthy eating, active living, and obesity control.
Funding Period: ----------------2002 - ---------------2011-
more information: NIH RePORT
- Public parks and physical activity among adolescent girlsDeborah A Cohen
RAND Corporation, 1776 Main St, Santa Monica, CA 90407 2138, USA
Pediatrics 118:e1381-9. 2006..The goal of this study was to examine the association between park proximity, park type, and park features and physical activity in adolescent girls...
- A cross-sectional and longitudinal study of travel by walking before and after school among eighth-grade girlsBrit I Saksvig
Department of Epidemiology and Biostatistics, University of Maryland School of Public Health, College Park, Maryland 20742, USA
J Adolesc Health 51:608-14. 2012..To examine "travel by walking" (TBW) before and after school among eighth-grade girls...
- Adolescent girls' most common source of junk food away from homeDeborah A Cohen
RAND Corporation, Santa Monica, CA, United States
Health Place 18:963-70. 2012..0 servings per week at retail food outlets. Findings demonstrate that low nutrient foods are ubiquitous and efforts should be made to reduce their availability in multiple settings...
- Energy balance in adolescent girls: the trial of activity for adolescent girls cohortDeborah A Cohen
RAND Corporation, Health Santa Monica, California, USA
Obesity (Silver Spring) 22:772-80. 2014..To study correlates of change in BMI percentile and body fat among adolescent girls...
- School design and physical activity among middle school girlsDeborah Cohen
RAND Corporation, Santa Monica, CA 90405, USA
J Phys Act Health 5:719-31. 2008....
- Commercial venues as supports for physical activity in adolescent girlsMarsha Dowda
Exercise Science, Arnold School of Public Health, 921 Assembly Street, University of South Carolina, Columbia, SC 29208, USA
Prev Med 45:163-8. 2007....
- Weekend schoolyard accessibility, physical activity, and obesity: the Trial of Activity in Adolescent Girls (TAAG) studyMolly M Scott
THE RAND CORPORATION, 1200 S Hayes Street, Arlington, VA 22202, USA
Prev Med 44:398-403. 2007....
- Girls' perception of neighborhood factors on physical activity, sedentary behavior, and BMIKelly R Evenson
Department of Epidemiology, School of Public Health, University of North Carolina, 137 East Franklin Street, Bank of America Center, Suite 306, Chapel Hill, NC 27514, USA
Obesity (Silver Spring) 15:430-45. 2007..The purpose of this study was to examine the association of perceived physical neighborhood factors with physical activity, sedentary behavior, and BMI among adolescent girls...
- Comparing perceived and objectively measured access to recreational facilities as predictors of physical activity in adolescent girlsMolly M Scott
THE RAND CORPORATION, 1200 S Hayes St, Arlington, VA 22202, USA
J Urban Health 84:346-59. 2007..The results from this study suggest that raising the profile of existing facilities may help increase physical activity among adolescent girls...
- Nutrition standards for away-from-home foods in the USAD A Cohen
RAND Corporation, Santa Monica, California 90407, USA
Obes Rev 13:618-29. 2012..Politically, regulatory standards contradict the belief that adults should be able to navigate dietary risks in away-from-home settings unaided...
- Out and about: association of the built environment with physical activity behaviors of adolescent femalesDaniel A Rodriguez
Department of City and Regional Planning, University of North Carolina at Chapel Hill, CB 3140, Chapel Hill, NC 27599, USA
Health Place 18:55-62. 2012..Understanding the places where physical activity and sedentary behaviors occur appears to be a promising strategy to clarify relationships and inform policy aimed at increasing physical activity and reducing sedentary behaviors...
- Identifying walking trips from GPS and accelerometer data in adolescent femalesDaniel A Rodriguez
Dept of City and Regional Planning, University of North Carolina, Chapel Hill, USA
J Phys Act Health 9:421-31. 2012..The study also assessed the accuracy of the locations where walking occurred compared with what participants reported in a diary...
- Progress and future directions on physical activity research among youthKelly R Evenson
Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina Chapel Hill, Chapel Hill, NC, USA
J Phys Act Health 8:149-51. 2011..The 2010 World Health Organization "Global Recommendations for Physical Activity and Health" supports similar guidelines for youth...
- Neighborhood socioeconomic status and non school physical activity and body mass index in adolescent girlsCarolyn C Voorhees
Dept of Public and Community Health, University of Maryland, College Park, MD, USA
J Phys Act Health 6:731-40. 2009..Socioeconomic status (SES) has well known associations with a variety of health conditions and behaviors in adults but is unknown in adolescents...
- Neighborhood design and perceptions: relationship with active commutingCarolyn C Voorhees
Department of Public and Community Health, University of Maryland School of Public Health, College Park, MD 20742 2611, USA
Med Sci Sports Exerc 42:1253-60. 2010..Walking to and from school contributes to total physical activity levels. This study investigated whether perceived and actual neighborhood features were associated with walking to or from school among adolescent girls...
- Examination of perceived neighborhood characteristics and transportation on changes in physical activity and sedentary behavior: The Trial of Activity in Adolescent GirlsKelly R Evenson
University of North Carolina, Chapel Hill, Gillings School of Global Public Health, Department of Epidemiology, 137 East Franklin Street, Bank of America Center, Suite 306, Chapel Hill, NC 27514, USA
Health Place 16:977-85. 2010..Further work is needed to understand the determinants of the decline in physical activity and the increase in sedentary behavior among adolescent girls...