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
Toward Environments and Policies that Promote Injury-Free Active Living
It Wouldn't Hurt

This article provides an overview of the evidence base concerning unintentional injuries associated with popular forms of physical activities for youth, and describes how injury prevention and child obesity professionals can work together to prevent injuries while promoting active lifestyles.

Research
Unwalkable Neighborhoods, Poverty, and the Risk of Diabetes Among Recent Immigrants to Canada Compared with Long-Term Residents

This study was designed to examine whether residents living in neighborhoods that are less conducive to walking or other physical activities are more likely to develop diabetes and, if so, whether recent immigrants are particularly susceptible to such effects.

Research
Using Local Land Use Laws to Facilitate Physical Activity - A BTG Research Brief

This brief examines the extent to which local land use laws require structural improvements that facilitate physical activity. It also examines whether such requirements vary based on community income. The data was collected in 2010 from 264 communities across the United States.

Research
Walking to School in Japan and Childhood Obesity Prevention: New Lessons from an Old Policy

The study analyzed the Japan’s walking-to-school practice implemented in 1953 for lessons useful to other cities and countries.

Research
Finding Space to Play:Legal and Policy Issues Impacting Community Recreational Use of School Property

This report provides information regarding current efforts in the public health community to promote community recreational use of school property to provide safe, affordable and convenient recreational facilities to communities, increase physical activity, and reduce obesity.

Research
Moderate to Vigorous Physical Activity and Sedentary Time and Cardiometabolic Risk Factors in Children and Adolescents

This study examined the independent and combined associations between objectively measured time in moderate- to vigorous-intensity physical activity (MVPA) and sedentary time with cardiometabolic risk factors.

Research
Is Active Travel to Non-School Destinations Associated With Physical Activity in Primary School Children?

This study examines associations between mode of travel to non-school destinations and physical activity in schoolchildren.

Toolkit, Research
Shared Use for Washington State: A toolkit to guide community partners in forming successful agreements

This toolkit is designed to assist community partners in Washington state enter into successful joint use agreements.

Research
Physical Activity and the Achievement Gap Among Urban Minority Youth

KEY TAKEAWAY:

There are disparities in physical activity and academic achievement among urban minority school-aged children, and improving physical activity and fitness in schools, especially through active transportation to school, could be a strategy for improving academic achievement among this group.

Research
CLASSROOM-BASED PHYSICAL ACTIVITY, COGNITION, AND ACADEMIC ACHIEVEMENT

KEY TAKEAWAY:

This study demonstrated improved academic performance following implementation of physically active academic lessons.