Association between habitual school travel and muscular fitness in youth

Active School Commuting in School Children: A Narrative Review of Current Evidence and Future Research Implications

Active school commuting (ASC) has been proposed as a practical way to inculcate positive physical activity habits in children. This paper reviews the current evidence regarding ASC among children, highlights advances in research techniques and existing limitations in the field, and outlines future implications for research and promotion. A comprehensive literature search was conducted to identify English language studies on ASC among children aged 6-12 years, followed by a narrative review. ASC has witnessed a global decline, despite evidence of its contribution to physical activity levels. Context-dependent factors such as commuting distance and parental safety concerns are consistently identified as key determinants of ASC. Several promising interventions have been identified. Despite the limitations in intervention scope and quality, notable advancements in research techniques, such as multilevel regression and agent-based modelling, have been identified. Effective promotion of ASC to tackle childhood physical inactivity requires collaborative efforts among schools, parents, and the government, and should be tailored to address multilevel determinants within the local context. Future research should leverage recent advancements in research techniques to develop effective promotion strategies, while considering the context-dependent nature of ASC behaviours and addressing existing limitations, including the lack of standardised definitions and limited geographical and age coverage.

Active Commuting and Physical Fitness: A Systematic Review

Physical fitness (PF) is considered an excellent biomarker of health. One possible strategy to improve PF levels is active commuting. This review, performed accordingly to the Preferred Reporting Items for Systematic Reviews guidelines includes scientific articles published in peer-reviewed journals up to December 2019 that aim at examining the relationship between active travel/commuting and PF. The search was performed in three databases (PubMed, Scopus, and Web of Science). Sixteen studies were included in this review. Findings from the 16 studies were unclear. From the eleven studies on children and adolescents screened, eight were cross-sectional, one prospective cohort, one quasi-experimental, and one experimental. From the five studies on adults, four were experimental and one cross-sectional. Body mass, waist circumference, skinfolds, fat mass, cardiorespiratory fitness, upper and lower strength tests were performed in children, adolescents, and adults. Agility and speed tests were performed only in the young age groups. Majority of the investigations on young ages and adults have shown positive effects or relationships between active commuting and several attributes of PF. However, to avoid misconceptions, there is a need for future robust investigation to identify potential mediators or confounders in this relationship. More robust investigations are essential to understand how and whether decision-makers and public health authorities can use active travel/commuting as a strategy to improve PF in all ages.

No Association Between Active Commuting to School, Adiposity, Fitness, and Cognition in Spanish Children: The MOVI-KIDS Study

BACKGROUND

Walking and bicycling (active commuting) to school may be a useful strategy to increase the daily amount of physical activity, and, potentially, improve children's health. However, it is unclear whether active commuting to school (ACS) has the potential to improve physical health and cognitive performance in children. Our aim was to examine the relationship between ACS with adiposity indicators, physical fitness, and cognitive performance in 4- to 7-year-old children.

METHODS

We conducted a cross-sectional study with 1159 children from the provinces of Cuenca and Ciudad Real, Spain. ACS was self-reported by parents. Adiposity (body mass index, waist circumference, body fat mass, and triceps skinfold thickness) and physical fitness (cardiorespiratory and muscular fitness) were measured by standard procedures. Cognitive performance was assessed using the Battery of General and Differential Aptitudes. Data analysis included analysis of covariance.

RESULTS

We found no differences in adiposity, physical fitness, and cognitive performance between active commuters and nonactive commuters.

CONCLUSIONS

Walking to school had no positive impact on adiposity, physical fitness, and cognition in 4- to 7-year-old children. Future studies should examine the intensity and duration of walking to school needed to provide benefits in health and cognitive performance.

Neighborhood Built Environment and Socioeconomic Status in Relation to Active Commuting to School in Children

Background:

The role of neighborhood type in active commuting to school (ACS) has not been extensively studied in children. The purpose of this study was to analyze the association between neighborhood built environment (walkability) and neighborhood socioeconomic status (SES) with ACS among children.

Methods:

A cross-sectional study of 310 Spanish children (aged 10–12 y; 51% male) was conducted in 2015. Walkability was defined as an index of 3 built environment characteristics (ie, residential density, land-use mix, and street connectivity) based on geographical information system data. Children’s home and school neighborhoods were evaluated. ACS was evaluated by questionnaire. Mixed model regression analyses evaluated ACS in relation to neighborhood walkability and SES.

Results:

There were no significant SES–walkability interactions for ACS. Children living in more walkable neighborhoods reported 2.5 more trips per week compared with those living in less walkable neighborhoods (P < .001). Children attending schools located in lower SES neighborhoods reported more ACS trips per week than those attending schools in higher SES neighborhoods (P < .05).

Conclusions:

Home-neighborhood walkability and school-neighborhood SES were associated with ACS. This study highlights the importance of assessing children’s home environment and school environment when ACS behavior is analyzed.

Bicycle Trains, Cycling, and Physical Activity: A Pilot Cluster RCT

INTRODUCTION

Increasing children's cycling to school and physical activity are national health goals. The objective was to conduct an RCT of a bicycle train program to assess impact on students' school travel mode and moderate-to-vigorous physical activity (MVPA).

STUDY DESIGN

Pilot cluster RCT with randomization at the school level and N=54 participants.

SETTING/PARTICIPANTS

Fourth-fifth graders from four public schools serving low-income families in Seattle, WA in 2014 with analyses in 2015-2016. All participants were provided and fitted with bicycles, safety equipment (helmets, locks, and lights), and a 2- to 3-hour bicycle safety course.

INTERVENTION

The intervention was a bicycle train offered daily (i.e., students volunteered to cycle with study staff to and from school).

MAIN OUTCOME MEASURES

Time 1 assessments occurred prior to randomization. Time 2 assessments occurred after 3-5 weeks of the intervention (i.e., during Weeks 4-6 of the intervention period). The primary outcome was the percentage of daily commutes to school by cycling measured by validated survey. MVPA, measured by accelerometry and GPS units and processed by machine learning algorithms, was a secondary outcome.

RESULTS

For two separate adjusted repeated measures linear mixed effects models in which students (N=54) were nested within schools (N=4), intervention participants had: (1) an absolute increase in mean percentage of daily commutes by cycling of 44.9%, (95% CI=26.8, 63.0) and (2) an increase in mean MVPA of 21.6 minutes/day, (95% CI=8.7, 34.6) from Time 1 to Time 2 compared with controls.

CONCLUSIONS

A pilot bicycle train intervention increased cycling to school and daily MVPA in the short term among diverse, inner-city elementary school students. The bicycle train intervention appears promising and warrants further experimental trials among large, diverse samples with longer follow-up.

TRIAL REGISTRATION

This study is registered at www.clinicaltrials.gov NCT02006186.