Public Health Commons^™

Objectively Measured Physical Activity And Fat Mass In A Large Cohort Of Children, Andy R. Ness, Sam D. Leary, Calum Mattocks, Steven N. Blair, John J. Reilly, Jonathan Wells, Sue Ingle, Kate Tilling, George Davey Smith, Chris J. Riddoch

Faculty Publications

Background: Previous studies have been unable to characterise the association between physical activity and obesity, possibly because most relied on inaccurate measures of physical activity and obesity.

Methods and Findings: We carried out a cross sectional analysis on 5,500 12-year-old children enrolled in the Avon Longitudinal Study of Parents and Children. Total physical activity and minutes of moderate and vigorous physical activity (MVPA) were measured using the Actigraph accelerometer. Fat mass and obesity (defined as the top decile of fat mass) were measured using the Lunar Prodigy dual x-ray emission absorptiometry scanner. We found strong negative associations between MVPA and …

Family Support For Physical Activity In Girls From 8th To 12th Grade In South Carolina, Marsha Dowda, Rod K. Dishman, Karin A. Pfeiffer, Russell R. Pate

Faculty Publications

Objective - To examine the relationship between perceived family support and other selected correlates of physical activity (PA) with changes in PA over time.

Methods - A total of 421 girls in South Carolina completed questionnaires at 8th, 9th and 12th grades (1998-2003). Family support for PA, PA self-efficacy, perceived behavioral control, attitudes, availability of equipment, and PA were measured.

Results - Growth curve analysis showed that family support, perceived behavioral control, and self-efficacy were independently related to age-related changes in PA as reflected by a total METs. Girls who reported lower family support at the 8th grade measure had …

Physical Activity And Physical Activity Adherence In The Elderly Based On Smoking Status., Theodore V. Cooper, M. R. Resor, C. J. Stoever, P. M. Dubbert

Theodore V. Cooper

No abstract provided.

Objectively Measured Physical Activity In Sixth-Grade Girls, Russell R. Pate, June Stevens, Charlotte Pratt, James F. Sallis, Kathryn H. Schmitz, Larry S. Webber, Gregory J. Welk, Deborah Rohm Young

Faculty Publications

Objectives - To describe the objectively-measured physical activity (PA) characteristics of a diverse sample of 6^th grade girls to examine influences on PA, and to report compliance with PA guidelines.

Design - Cross-sectional study.

Setting - Six locations across the United States.

Participants - 1578 6^th grade girls. Actigraph accelerometers were worn for 7 days, and data for 6 days were included in the analyses.

Main exposure - Race/ethnicity, free-or-reduced price lunch (FRPL), and geographic region.

Main outcome measure - Six operational definitions of adequate activity (60 min or 30 min of daily MVPA at or above 4.6, …

Environmental Equity Is Child's Play: Mapping Public Provision Of Recreation Opportunities In Urban Neighbourhoods, Jason Gilliland, Martin Holmes, Jennifer D. Irwin, Patricia Tucker

Geography & Environment Publications

This paper examines the spatial distribution of recreational opportunities for children and youth in a mid-sized Canadian city (London, Ontario), in relation to the socioeconomic status of neighbourhoods and estimated local need for publicly provided recreation spaces. Public recreation facilities (N = 537) throughout the city were identified, mapped and analysed in a geographic information system. To explore potential socio-environmental inequities, neighbourhoods (N = 22) were characterized by socioeconomic and environmental variables, an index of neighbourhood social distress, a neighbourhood play space needs index, and measures of the prevalence and density of recreational opportunities. The results of the …

Physical Activities In Adolescent Girls: Variability In Energy Expenditure, Karin A. Pfeiffer, Kathryn H. Schmitz, Robert G. Mcmurray, Margarita S. Treuth, David M. Murray, Russell R. Pate

Faculty Publications

Background - Understanding interindividual variability of energy expended in common activities is important for determining precise estimates of energy expenditure in surveillance studies and clinical trials. The purpose of this study was to describe the variability in energy expenditure for selected physical activities among adolescent girls.

Methods - Seventy-four adolescent girls (aged 13 to 14 years) participated in this cross-sectional investigation. Data were collected in 2001 and analyzed in 2004. Energy expenditure was measured by indirect calorimetry for ten activities and during a submaximal cycle ergometer test, which was used to estimate cardiorespiratory fitness. Variability in energy expended for the …

Promoting Physical Activity In Children And Youth: A Leadership Role For Schools: A Scientific Statement From The American Heart Association Council On Nutrition, Physical Activity, And Metabolism (Physical Activity Committee) In Collaboration With The Councils On Cardiovascular Disease In The Young And Cardiovascular Nursing, Russell R. Pate, Michael G. Davis, Thomas N. Robinson, Elaine J. Stone, Thomas L. Mckenzie, Judith C. Young

Faculty Publications

No abstract provided.

Naturally Occurring Changes In Time Spent Watching Television Are Inversely Related To Frequency Of Physical Activity During Early Adolescence, Robert W. Motl, Edward Mcauley, Amanda Birnbaum, Leslie A. Lytle

Department of Public Health Scholarship and Creative Works

In this longitudinal study, we examined the relationship between changes in time spent watching television and playing video games with frequency of leisure-time physical activity across a 2-year period among adolescent boys and girls (N=4594" role="presentation" style="box-sizing: border-box; margin: 0px; padding: 0px; display: inline-block; line-height: normal; font-size: 16.200000762939453px; word-spacing: normal; word-wrap: normal; white-space: nowrap; float: none; direction: ltr; max-width: none; max-height: none; min-width: 0px; min-height: 0px; border: 0px; position: relative;">). Latent growth modelling indicated that a decrease in time spent watching television was associated with an increase in frequency of leisure-time physical activity. That relationship was strong in magnitude …

A Preliminary Test Of A Student-Centered Intervention On Increasing Physical Activity In Underserved Adolescents, Dawn K. Wilson, Alexandra E. Evans, Joel Williams, Gary Mixon, John R. Sirard, Russell R. Pate

Faculty Publications

Background - Previous studies have shown that choice and self-initiated behavior changes are important for increasing intrinsic motivation and physical activity (PA), however, little of this research has focused on underserved adolescents.

Purpose - This study examined the effects of a 4-week student-centered intervention on increasing PA in underserved adolescents.

Methods - Twenty-eight students in the intervention school were matched (on race, percentage on free or reduced-price lunch program, gender, and age) with 20 students from another school who served as the comparison group (30 girls, 18 boys; ages 10-12 years; 83% African American; 83% on free or reduced-price lunch). …

Self-Management Strategies Mediate Self-Efficacy And Physical Activity, Amanda Birnbaum, Rod K. Dishman, Robert W. Motl, James F. Sallis, Andrea L. Dunn, Greg J. Welk, Ariane L. Yung, Carolyn C. Voorhees, Jared B. Jobe

Department of Public Health Scholarship and Creative Works

Self-efficacy theory proposes that girls who have confidence in their capability to be physically active will perceive fewer barriers to physical activity or be less influenced by them, be more likely to pursue perceived benefits of being physically active, and be more likely to enjoy physical activity. Self-efficacy is theorized also to influence physical activity through self-management strategies (e.g., thoughts, goals, plans, and acts) that support physical activity, but this idea has not been empirically tested.

Self-Management Strategies Mediate Self-Efficacy And Physical Activity, Rod K. Dishman, Robert W. Motl, James F. Sallis, Andrea L. Dunn, Amanda Birnbaum, Greg J. Welk, Ariane L. Bedimo-Rung, Carolyn C. Voorhees, Jared B. Jobe

Department of Public Health Scholarship and Creative Works

Background

Self-efficacy theory proposes that girls who have confidence in their capability to be physically active will perceive fewer barriers to physical activity or be less influenced by them, be more likely to pursue perceived benefits of being physically active, and be more likely to enjoy physical activity. Self-efficacy is theorized also to influence physical activity through self-management strategies (e.g., thoughts, goals, plans, and acts) that support physical activity, but this idea has not been empirically tested.

Methods

Confirmatory factor analysis was used to test the factorial validity of a measure of self-management strategies for physical activity. Next, the construct …

Scale Development For Perceived School Climate For Girls’ Physical Activity, Amanda Birnbaum, Kelly R. Evenson, Robert W. Motl, Rod K. Dishman, Carolyn C. Voorhees, James F. Sallis, John P. Elder, Marsha Dowda

Department of Public Health Scholarship and Creative Works

Objectives: To test an original scale assessing perceived school climate for girls' physical activity in middle school girls. Methods: Confirmatory factor analysis (CFA) and structural equation modeling (SEM). Results: CFA retained 5 of 14 original items. A model with 2 correlated factors, perceptions about teachers' and boys' behaviors, respectively, fit the data well in both sixth and eighth-graders. SEM detected a positive, significant direct association of the teacher factor, but not the boy factor, with girls' self-reported physical activity. Conclusions: School climate for girls' physical activity is a measurable construct, and preliminary evidence suggests a relationship with physical activity.

Scale Development For Perceived School Climate For Girls’ Physical Activity, Amanda Birnbaum, Kelly R. Evenson, Robert W. Motl, Rod K. Dishman, Carolyn C. Voorhees, James F. Sallis, John P. Elder, Marsha Dowda

Department of Public Health Scholarship and Creative Works

Objectives: To test an original scale assessing perceived school climate for girls' physical activity in middle school girls. Methods: Confirmatory factor analysis (CFA) and structural equation modeling (SEM). Results: CFA retained 5 of 14 original items. A model with 2 correlated factors, perceptions about teachers' and boys' behaviors, respectively, fit the data well in both sixth and eighth-graders. SEM detected a positive, significant direct association of the teacher factor, but not the boy factor, with girls' self-reported physical activity. Conclusions:School climate for girls' physical activity is a measurable construct, and preliminary evidence suggests a relationship with physical activity.

Comparisons Between Rail-Trail Users And Nonusers And Men And Women's Patterns Of Use In A Suburban Community, Philip J. Troped, Ruth P. Saunders, Russell R. Pate

Faculty Publications

Background: Physical activity research on trails is limited. We compared rail-trail users and nonusers on demographics, physical activity, and barriers/concerns about trail use; and described use among men and women. Methods: Four hundred thirteen adults completed a physical activity survey during fall 1998. Chi-square statistics and t-tests were used to compare trail users to nonusers, and men and women on trail use. Results: More trail users (79%) performed recreational physical activity ≥ 3 d/wk, compared to nonusers (47%). Walking was the most common activity for trail users and nonusers. Both groups shared concerns about safe access to the trail …

The Role Of Peer Social Network Factors And Physical Activity In Adolescent Girls, Carolyn C. Voorhees, David Murray, Greg Welk, Amanda Birnbaum, Kurt M. Ribisi, Carolyn C. Johnson, Karin Allor Pfeiffer, Brit Saksvig, Jared B. Jobe

Department of Public Health Scholarship and Creative Works

Objective: To study the relationship between peer-related physical activity (PA) social networks and the PA of adolescent girls.

Methods: Cross-sectional, convenience sample of adolescent girls. Mixed-model linear regression analyses to identify significant correlates of self-reported PA while accounting for correlation of girls in the same school.

Results: Younger girls were more active than older girls. Most activity-related peer social network items were related to PA levels. More PA with friends was significantly related to self-reported PA in multivariate analyses.

Conclusions: Frequency of PA with friends was an important correlate of PA among the peer network variables …

Using Media Messaging To Promote Healthful Eating And Physical Activity Among Urban Youth, B.J. Carter, Amanda Birnbaum, Lisa Hark, Brian Vickery, Charles Potter, Michael P. Osborne

Department of Public Health Scholarship and Creative Works

National trends show consistent increases, as well as racial and ethnic dis- parities, in the prevalence of overweight children and adolescents. Such disparity is evident regarding behaviors such as a poor diet and a lack of physical activity and in the prevalence and outcomes of associated health problems. It has been suggested that grounding interventions in cultural traditions and norms are critical for preventing obesity among ethnic and racial minority youth; however, with some notable exceptions, few community interventions have used this approach. Moreover, urban minority youth may face additional barriers to healthful eating and physical activity behaviors, such as …

Using Media Messaging To Promote Healthful Eating And Physical Activity Among Urban Youth, B.J Carter, Amanda Birnbaum, Lisa Hark, Brian Vickery, Charles Potter, Michael P. Osborne

Department of Public Health Scholarship and Creative Works

National trends show consistent increases, as well as racial and ethnic dis- parities, in the prevalence of overweight children and adolescents. Such disparity is evident regarding behaviors such as a poor diet and a lack of physical activity and in the prevalence and outcomes of associated health problems. It has been suggested that grounding interventions in cultural traditions and norms are critical for preventing obesity among ethnic and racial minority youth; however, with some notable exceptions, few community interventions have used this approach. Moreover, urban minority youth may face additional barriers to healthful eating and physical activity behaviors, such as …

A Schematic For Focusing On Youth In Investigations Of Community Design And Physical Activity, Kevin J. Krizek, Amanda Birnbaum, David M. Levinson

Department of Public Health Scholarship and Creative Works

This paper provides a first step in addressing special considerations for youth in a relatively new area of physical activity research. After reviewing the urgent need for novel approaches to increasing physical activity, the growing interest in the effects of community design are discussed. Although most discussion on this topic has focused on adults, there are important differences between youth and adults that warrant a special focus on youth and need to be accounted for. This article presents a schematic that accounts for how and where youth spend their time, decomposing the day into time spent in travel and time …

Physical Activity And Stroke Risk: A Meta-Analysis, Chong Do Lee, Aaron R. Folsom, Steven N. Blair

Faculty Publications

Background and Purpose - Whether physical activity reduces stroke risk remains controversial. We used a meta-analysis to examine the overall association between physical activity or cardiorespiratory fitness and stroke incidence or mortality.

Methods - We searched MEDLINE from 1966 to 2002 and identified 23 studies (18 cohort and 5 case-control) that met inclusion criteria. We estimated the overall relative risk (RR) of stroke incidence or mortality for highly and moderately active individuals versus individuals with low levels of activity using the general variance-based method.

Results - The meta-analysis documented that there was a reduction in stroke risk for active or …

Validation Of A 3-Day Physical Activity Recall Instrument In Female Youth, Russell R. Pate, Rebecca Ross, Marsha Dowda, Stewart G. Trost, John R. Sirard

Faculty Publications

The purpose of this study was to examine the validity of the 3-Day Physical Activity Recall (3DPAR) self-report instrument in a sample of eighth and ninth grade girls (n= 70, 54.3% white, 37.1% African American). Criterion measures of physical activity were derived using the CSA 7164 accelerometer. Participants wore a CSA monitor for 7 consecutive days and completed the self-report physical activity recall for the last 3 of those days. Self-reported total METs, 30-min blocks of MVPA, and 30-min blocks of VPA were all significantly correlated with analogous CSA variables for 7 days (r=0.35-0.51; P<0.01) and 3 days (r …