Research: Health and Physical Activity

Physical activity rates among children have declined over the past two decades, which is a concerning trend carrying multiple implications. Regular physical activity is crucial for youth development and leads to improved bone health, weight status, cardiorespiratory and muscular fitness, cognition, and reduced risk of anxiety and depression (U.S. DHHS, 2018). Yet, less than one-quarter (24 percent) of children 6-17 years of age do not engage in at least 60 minutes of daily physical activity as recommended in the Physical Activity Guidelines for Americans (U.S. DHHS, 2018; U.S. Report Card Research Advisory Committee, 2022). Youth of color, youth with disabilities, girls, and adolescent-age youth are even less likely to attain recommended physical activity levels. (U.S. Report Card Research Advisory Committee, 2022). In particular, physical activity rates remain higher for boys than girls, and higher for White students than for African-American and Hispanic students (U.S. DHHS, 2020).

Activity levels for many children have declined, due in part to a built environment that is unsafe for walking and bicycling, reduced physical education in school, and increased popularity of sedentary leisure-time activities. Safe Routes to School can create environmental, policy, and behavioral changes that increase physical activity and promote the health of both children and adults.  Articles summarized in this section address the overall health benefits of physical activity, specifically walking to and from school, as well as the impact that increased physical activity opportunities have on health trends in the U.S.  There is also a growing body of research included here to support the improved social and emotional health implications Safe Routes to School and active transportation on youth development.

Research Highlights:

  • Children who walk to school get three times as much moderate to vigorous physical activity during their walk to school than during recess (Cooper et al., 2010). Children walk more when they live on more walkable routes with more open green space and less exposure to road traffic (Gallimore et al., 2011; Rahman, et al., 2011; Lamber et al., 2009).
  • Implementation of Safe Routes to School initiatives like Walking School Buses have demonstrated improved rates of walking to school, increased daily moderate-to-vigorous physical activity, and support healthy weight (Quarles, 2012; Mendoza et al., 2011; Mori et al., 2012; Kong et al., 2010).
  • Research demonstrates that children who walk or bicycle to school have higher daily levels of physical activity and better cardiovascular fitness than do children who do not actively commute to school (Mendoza et al., 2011; Davison, et al., 2008; Østergaard et al., 2012).
  • One study suggests that a 5% increase in neighborhood walkability is associated with 32.1% more minutes devoted to physically active travel and about one-quarter point lower body mass index (0.228) (Frank, et al., 2006).
  • Living in a walkable community has been associated with increased prevalence of healthy weight in adolescents (Slater et al., 2013).
  • Perceptions of safety and attractiveness impact a neighborhood’s walkability (Project for Public Space, 2016Ussery et al., 2017).  
  • There are gender, racial, and class disparities in how much people walk. Compared to affluent and primarily White neighborhoods, low-income neighborhoods and communities of color are perceived as less attractive and safe because of crime (Ussery et al., 2017).   
  • Investing in bike lanes is an investment in public health. People bike more when the built environment supports bicycling by including bike lanes, bike racks, and traffic calming (Dill et al., 2013Hipp et al., 2013Winters et al., 2016).
  • In addition to more bike infrastructure and road engineering improvements to make bicycling safer, bicycle education is important (Pion et al., 2016).
  • US metro areas with greater multi-modal transportation options (i.e., walking, bicycling, public transit) have better public health outcomes. People make healthier lifestyle choices, have more quality leisure time, exercise more, and live longer (Meehan et al., 2017; Frederick et al., 2017).
  • Students can build stronger friendships and relationships through walking and biking together. Based on a CDC evaluation of 145 informants from 184 walking school bus programs from 2017 to 2018, every additional walking school bus trip per week was related to a 21 percent increase in the odds of experiencing less bullying (Carlson et al., 2020).
Research
School Policies on Physical Education and Physical Activity

KEY TAKEAWAY:

  • Comprehensive physical activity programs in school settings can affect physical activity, health, and academic performance.
Research
A Comprehensive Multi-Level Approach for Passing Safe Routes to School and Complete Streets Policies in Hawaii

Policy changes are needed to reshape the built environment for active transportation.

Research
A Cross-Sectional Study of the Individual, Social, and Built Environmental Correlates of Pedometer-Based Physical Activity among Elementary School Children

The purpose of this study was to identify correlates of pedometer-based cut-points among elementary school-aged children.

Research
A Physical and Social Contextual Influences on Children’s Leisure-Time Physical Activity: An Ecological Momentary Assessment Study.

This study used real-time electronic surveys delivered through mobile phones, known as Ecological Momentary Assessment (EMA), to determine whether level and experience of leisure-time physical activity differ across children’s physical and social contexts.

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A Systematic Review of Interventions for Promoting Active Transportation to School

The purpose of this paper is to review intervention studies related to active school transportation to guide future intervention research. A systematic review was conducted to identify intervention studies of active transportation to school published in the scientific literature through January 2010. 

Research
Active Commuting to School and Association With Physical Activity and Adiposity Among US Youth

Walking or bicycling to school (ie, active commuting) has shown promise for improving physical activity and preventing obesity in youth. The objectives of this paper are to examine, among US youth, whether active commuting was inversely associated with adiposity and positively associated with moderate-to-vigorous physical activity (MVPA). 

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Assessment of a school-based intervention in eating habits and physical activity in school children: the AVall study

Obesity has become a global public health problem, which also affects children. It has been proposed that the educational interventions during childhood could be a key strategy in the prevention of obesity.

Research
Contributions of Built Environment to Childhood Obesity

Through a multidisciplinary literature review, the authors investigated the association between various built environment attributes and childhood obesity.

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Costs and Benefits of Bicycling Investments in Portland, Oregon

Promoting bicycling has great potential to increase overall physical activity; however, significant uncertainty exists with regard to the amount and effectiveness of investment needed for infrastructure. The objective of this study is to assess how costs of Portland’s past and planned investments in bicycling relate to health and other benefits.

Research
Determinants of Change in Physical Activity in Children and Adolescents: A Systematic Review

Data are available on correlates of physical activity in children and adolescents, less is known about the determinants of change. This review aims to systematically review the published evidence regarding determinants of change in physical activity in children and adolescents.