Physical Activity Equipment Research Articles

The Relationship between body mass index (BMI) and sedentary behavior is mediated by negative peer interaction in boys.

To determine if self-reported negative social interaction mediates the relationship between sedentary behavior and body mass index (BMI) percentile in boys. Twelve overweight/obese (<85th BMI percentile) and 14 non-overweight (<85th BMI percentile) boys (10.5 ± 1.5 years old) completed surveys assessing overt peer victimization and relational victimization. Children were individually given access to a gymnasium with physical activity equipment and sedentary alternatives for 30 minutes. Children could play with the equipment in any pattern they wished and the amount of time allocated to sedentary activities (sitting time) was recorded. Overt and relational victimization were moderately and positively associated with BMI percentile (r ≥ 0.40, p ≤ 0.04) and sitting time (r ≥ 0.40, p ≤ 0.05) and sitting time was positively associated with BMI percentile (r = 0.4, p = 0.05). After controlling for overt and relational victimization the correlation between sitting time and BMI percentile was non-significant (r ≤ 0.28, p ≥ 0.18). The positive relationship between BMI percentile and sedentary behavior was mediated by measures of negative social interaction.

Parents’ intentions toward including their children with visual impairments in physical activities

Purpose: Physical activity participation is essential for the healthy development of basic locomotor skills and for the overall wellbeing of children. Unfortunately, for children with visual impairments the opportunities to engage in physical activity are limited compared with their peers without disabilities. The purpose of this study was to determine and analyze the intentions of parents to include their children with visual impairments, as well as their entire family in physical activities after participating in a physical activity intervention.Methods: This descriptive-qualitative study was situated in the theory of planned behavior. On completion of a series of workshops, 10 parents took part in individual semi-structured interviews that were subsequently transcribed and analyzed using a thematic line-by-line analysis.Results: Through the data analysis three major themes emerged: (a) increased confidence, (b) influence on future intentions, and (c) conditional intentions.Conclusions: Results revealed that the physical activity intervention provided parents with an opportunity to engage their child in physical activities and to gain a deeper understanding of their child’s disability. Consequently, the intervention enhanced parent’s perceived teaching abilities and skills regarding physical activity.Implications for rehabilitationResults of this study demonstrated that a physical activity intervention have the potential to enhance intentions to engage in physical activity among children with visual impairments and their parents.As a result of this study, parents acquired the skills necessary to confidently engage their children in physical activity.The current physical activity intervention provided parents with an opportunity to engage their child in physical activities and to gain a deeper understanding of their child’s disability.Physical activity interventions targeting children with visual impairments and their parents should consider the inclusion of oral presentations combined with written supplements or written manuals, and physical activity equipment.

Environmental correlates of total and domain-specific sedentary behaviour in young people. The UP&DOWN study

This study investigated the associations between the characteristics of the nearby physical environment with the total and domain-specific leisure-time sedentary behaviour (SB) in young people. The study included 1578 youth (9–18 years) from the UP&DOWN study. Total leisure-time SB was objectively-assessed by accelerometers. Participants self-reported the time spent during leisure-time in different domains of SB (i.e. screen-based, educational-based, social-based, and other-based SB). Information regarding the basic characteristics of the house, the perceived neighbourhood environment, the amount of physical activity facilities, equipment and materials attainable at home, and the media equipment available at home and in the own bedroom was collected. Linear mixed models were performed, including school and city as random effects. The availability of yard was related to lower total SB and time spent surfing the Internet in boys, but not in girls. More favourable perceived neighbourhood environment was associated with lower total SB and time spent playing video games in girls, but not in boys. The amount of physical activity materials at home was negatively associated with screen-based SB, while the availability of a computer in the own bedroom was positively related to the time spent surfing the Internet in boys and girls. The number of televisions at home and having a computer in the own bedroom was associated with lower time in educational-based SB in boys and girls, respectively. Increasing the number of PA materials at home and decreasing the number of TVs at home and the availability of a computer in the bedroom could improve SB profiles of youth.

Children’s physical activity and the preschool physical environment: The moderating role of gender

The physical environment in preschool, covering all indoor and outdoor equipment, and the surfaces of the preschool yard, may have a large potential for increasing children’s physical activity (PA). However, it is less clear which specific physical environmental factors are associated with children’s PA. Cross-sectional associations between the individual observed items (e.g. fixed and portable equipment, surfaces, terrain in the grounds) as well as composite scores for the PA equipment on the one hand, and children’s PA, measured by accelerometers, on the other, were investigated in a sample of 3–6 year old children (N = 778) attending preschool in Finland. Having balance equipment and trampolines in group facilities, having balance equipment, gym mats and sticks in the gym and having skipping ropes, sand and mostly hilly terrain on the outdoor playground were associated with children’s higher PA, regardless of gender. On the contrary, having gravel as the terrain in the playground and having a seesaw outdoors were associated with lower PA levels, regardless of gender. Four significant interactions with gender were found, but none of the environmental predictors remained significant in the post-hoc gender-stratified analyses. Variety in PA equipment and playground terrain may be beneficial for increasing children’s PA in preschools.

Home and neighbourhood built environment features in family-based treatment for childhood obesity.

Family-based behavioural weight loss treatment (FBT) for childhood obesity helps families develop strategies to facilitate healthy choices in their home and other environments (e.g. home neighbourhood). The current study examines how the home food environment, both pre-FBT and post-FBT, and the neighbourhoods in which families live are associated with child weight and weight-related outcomes in FBT. Parent-child dyads (n=181) completed a 16-session FBT programme and completed home environment, anthropometric and child dietary/activity assessments at pre-FBT and post-FBT. Parents reported on availability of food, electronics and physical activity equipment in the home. The neighbourhood food and recreation environments around each dyad's residence was characterized using existing data within a geographic information system. Families successfully made healthy home environment modifications during FBT. Regression models showed reducing RED (e.g. high-energy-dense and low-nutrient-dense) foods and electronics in the home during FBT had positive effects on child weight and weight-related outcomes. No neighbourhood food or recreation environment variables were significantly related to outcomes, although having a larger density of public recreation spaces was associated with increases in physical activity at the trend-level. Modifying the home environment, specifically reducing RED foods and electronics, may be particularly important for FBT success.

Características do ambiente físico e organizacional para a prática de atividade física nas escolas de Curitiba, Brasil


 
 
 O objetivo deste estudo foi descrever as características das estruturas para a prática de atividade física (AF) entre escolas públicas e privadas de Curitiba, Brasil. Estudo transversal com 114 escolas (72,8% públicas). Os respectivos professores de Educação Física (EF) (n = 114) das escolas informaram as características organizacionais. O ambiente escolar foi avaliado por meio de observação sistemática com uma ferramenta de auditoria para identificar o tipo, qualidade (não funcional, ruim, média e excelente) e quantidade de estruturas para AF. Os professores de EF reportaram a disponibilidade das estruturas por meio de um instrumento padronizado. Para análise, utilizou-se da distribuição de frequências, os testes de Qui-quadrado e U de Mann Whitney mantendo um nível de significância de 5%. Nas escolas públicas, houve maior proporção das áreas para jogos com qualidade “média” (54,6%), esportes “ruim” (29,1%), quadras individuais “ruim” (38,7%) e poliesportivas “não funcionais” (37,6%), enquanto em escolas privadas eram de qualidade “excelente” as áreas para jogos (68,9%), esportes (57,3%), quadras individuais (50,0%) e poliesportivas (47,0%) com diferença signi cante em todas as áreas entre as escolas (p < 0,001). Escolas públicas possuem aproximadamente um equipamento para AF a cada 100 alunos, enquanto a escolas privadas possuem o dobro (p < 0,001). A disponibilidade das estruturas foi, em geral, semelhante entre os tipos de escola, exceto no acesso a “playgrounds” e o espaço para prática de “tênis de mesa” no período do recreio foi maior em escolas privadas (p < 0,05). As escolas privadas apresentaram maior qualidade e quantidade de estruturas relacionadas à AF quando comparadas as escolas públicas.
 
 

Oportunidades para a prática de atividade física em escolas públicas e privadas de Curitiba, Brasil

The school represents an space with opportunities for physical activity (PA) practice in children and adolescents. However, there is still limited evidence on local strategies, structures and policies for PA in the school environment in Brazil. The aim of the study was to identify PA opportunities in public and private schools in Curitiba, Brazil. A total of one hundred sixty one schools were identified from a household survey conducted with adolescents from Curitiba, Brazil from which 107 (72.6% publics) participated in this study. One physical education teacher from each participant school was interviewed. Nearly all schools offered two weekly PE classes (97.1%), lengthing 45 to 50 minutes (95.7%). PE annual training was more frequent among public schools (92.9%). Most schools offered one recess interval (92.3%). However, recess interval of 16-30 minutes (75.0%), supervised (65.6%) and with PA equipment (65.6%) were more frequent among private schools. After school activities were offered in eight out of ten schools, and PA opportunities in other contexts were more frequent in private schools (40.0% vs. 14.3%, p = 0.003). However, more public schools participated in state sponsored programs (57.6% versus 31.2%, p = 0.011). Opportunities for PA in the investigated schools is offering by insufficient frequency and length for promoting PA at the recommended levels in this context.

Oportunidades para a prática de atividade física em escolas públicas e privadas de Curitiba, Brasil

The school represents an space with opportunities for physical activity (PA) practice in children and adolescents. However, there is still limited evidence on local strategies, structures and policies for PA in the school environment in Brazil. The aim of the study was to identify PA opportunities in public and private schools in Curitiba, Brazil. A total of one hundred sixty one schools were identified from a household survey conducted with adolescents from Curitiba, Brazil from which 107 (72.6% publics) participated in this study. One physical education teacher from each participant school was interviewed. Nearly all schools offered two weekly PE classes (97.1%), lengthing 45 to 50 minutes (95.7%). PE annual training was more frequent among public schools (92.9%). Most schools offered one recess interval (92.3%). However, recess interval of 16-30 minutes (75.0%), supervised (65.6%) and with PA equipment (65.6%) were more frequent among private schools. After school activities were offered in eight out of ten schools, and PA opportunities in other contexts were more frequent in private schools (40.0% vs. 14.3%, p = 0.003). However, more public schools participated in state sponsored programs (57.6% versus 31.2%, p = 0.011). Opportunities for PA in the investigated schools is offering by insufficient frequency and length for promoting PA at the recommended levels in this context.

ANDALE Pittsburgh: results of a promotora-led, home-based intervention to promote a healthy weight in Latino preschool children

BackgroundLatino preschool children have higher rates of obesity than preschool children from other racial/ethnic groups; however, few effective, culturally appropriate interventions exist targeting this group. The purpose of this study was to test the feasibility of a 10-week, promotora-mediated, home-based intervention to promote a healthy weight in Latino preschool children.MethodsTrained promotoras (community health workers) delivered 10, 90-min weekly interactive and tailored sessions to Latino families living in Allegheny County. Participants were recruited through promotoras’ own social networks and community gatherings, flyers, and word of mouth. Primary outcome measures included child body mass index (BMI) z-score and percentile. Secondary outcome measures included child objectively measured physical activity and dietary intake, and the home social and physical environment (e.g., parent health behaviors, parent self-efficacy, parental support, physical activity equipment in the home). The final analysis sample included 49 of 51 participants who completed both baseline and follow-up assessments.ResultsParticipants included mothers (33.5 ± 6.1 years old) and their preschool-aged children who were primarily 1st generation immigrants from Mexico (65%). The primary analyses of BMI percentile and z-score showed no change post-intervention. However, there was a significant decrease in child BMI percentile for overweight and obese children from baseline to follow-up (p < .05). We also saw significant pre/post increases in child daily fruit and vegetable intake, and parent moderate-to-vigorous physical activity, fruit and vegetable servings per day, and self-efficacy; and significant decreases in child saturated fat and added-sugar intake, and child and parent screen time (p’s < .05).ConclusionsDespite the short duration of the intervention and follow-up, this pilot study showed promising effects of a promotora-mediated intervention to promote a healthy weight in Latino preschool children.

Facilitators and Barriers to Being Physically Active in a Rural Hawai'i Community: A Photovoice Perspective.

A large body of existing literature suggests associations between perceptions of the environment and physical activity status, but very few studies have examined perceptions among Native Hawaiian and Pacific Islander (NHPI) communities. The purpose of this study was to examine perceptions of the active living environment in Hawai‘i in rural communities with a high proportion of NHPI. A total of thirteen adults were purposefully selected to participate in the study, and the Photovoice method was used to capture their perceptions. Three sessions were used to describe the purpose of the study, select and describe photographs, and identify emerging themes. A total of nine overarching themes were identified by participants and placed into three categories. Participants identified facilitators to being physically active, but also identified several barriers in their community such as the lack of available physical and built amenities, social norms, and safety. Participants proposed four action items to improve their active living environment: promote programs that are organized by community members, contact the local university to provide access to physical activity equipment, contact Honolulu City & County officials to voice concerns regarding barriers that prevent physical activity in the community, and working with employers in the community to create policies that promote physical activity at the workplace.

Developing the System for Observing Behavioral Ecology for Youth in Schools Instrument.

Behavioral support may be effective in increasing physical activity (PA) in school settings. However, there are no data collection systems to concurrently record PA and behavioral support. This paper describes the development and validation of the System for Observing Behavioral Ecology for Youth in Schools (SOBEYS)-an instrument used with existing observation systems to record PA within a behavioral ecological context. In 2013, experts created a set of behavioral categories to record prompting and reinforcement of PA during a recreational school activity program. The school provided supervision and equipment for lunchtime PA, making it possible to assess both PA and behavioral support. The system was implemented in spring semester 2014 at 1 suburban junior high school (N = 1452; 48% girls, 74% Caucasian) in the western Unites States. Following multiple field trials, the SOBEYS instrument recorded behavioral categories of visual and verbal prompting, verbal, and nonreinforcement by adults and peers, and token reinforcement. Construct validity and acceptable interobserver agreement (>90%; kappa between 0.22 and 0.94) resulted. Trained SOBEYS users can accurately and reliably record the presence of behavioral support aimed at prompting and reinforcing PA in conjunction with established systematic observation instruments to record PA context and quantity.

A life course examination of the physical environmental determinants of physical activity behaviour: A "Determinants of Diet and Physical Activity" (DEDIPAC) umbrella systematic literature review.

BackgroundParticipation in regular physical activity is associated with a multitude of health benefits across the life course. However, many people fail to meet PA recommendations. Despite a plethora of studies, the evidence regarding the environmental (physical) determinants of physical activity remains inconclusive.ObjectiveTo identify the physical environmental determinants that influence PA across the life course.MethodsAn online systematic literature search was conducted using MEDLINE, ISI Web of Science, Scopus and SPORTDiscus. The search was limited to studies published in English (January 2004 to April 2016). Only systematic literature reviews (SLRs) and meta-analyses (MAs) of observational studies, that investigated the association between physical determinants and physical activity outcomes, were eligible for inclusion. The extracted data were assessed on the importance of determinants, strength of evidence and methodological quality.ResultsThe literature search identified 28 SLRs and 3 MAs on 67 physical environmental characteristics potentially related to physical activity that were eligible for inclusion. Among preschool children, a positive association was reported between availability of backyard space and outdoor toys/equipment in the home and overall physical activity. The availability of physical activity programs and equipment within schools, and neighbourhood features such as pedestrian and cyclist safety structure were positively associated with physical activity in children and adolescents. Negative street characteristics, for example, lack of sidewalks and streetlights, were negatively associated with physical activity in adults. Inconsistent associations were reported for the majority of reviewed determinants in adults.ConclusionThis umbrella SLR provided a comprehensive overview of the physical environment determinants of physical activity across the life course and has highlighted, particularly amongst youth, a number of key determinants that may be associated with overall physical activity. Given the limited evidence drawn mostly from cross-sectional studies, longitudinal studies are needed to further explore these associations.RegistrationPROSPERO CRD42015010616

Psychological, social and physical environmental mediators of the SCORES intervention on physical activity among children living in low-income communities

ObjectivesThis study examined mediation effects of socio-ecological variables on accelerometer-determined physical activity among children in the Supporting Children's Outcomes using Rewards, Exercise and Skills (SCORES) intervention. DesignRandomized control trial mediation analysis. MethodsPrimary school children were randomly assigned the SCORES multi-component intervention or control group for the 12-month study. The outcome was accelerometer derived total moderate-to-vigorous physical activity (MVPA). Hypothesized mediators measured in children were physical activity enjoyment and perceived sport competence and social support. Hypothesized mediators measured in parents were family social support, access to physical activity facilities and equipment at home, and perceived access to physical activity opportunities in the local community. Mediation analyses were conducted using multi-level linear analysis in MPlus. ResultsThere were significant intervention effects for social support from teachers (A = 1.73, SE = 0.88, p = 0.048) and parental perceived access to physical opportunities in the local community (A = 2.69, SE = 1.12, p = 0.016). There were significant associations between changes in perceived sport competence (B = 0.48, SE = 0.36, p = 0.027), parental perceived access to physical activity opportunities in the local community (B = 0.60, SE = 0.26, p = 0.021), and changes in total MVPA. Parental perceived access to physical activity opportunities in the local community was found to have a significant mediating effect on total MVPA (AB = 1.61, 95% CI = 0.06 to 3.95, proportion 13%). ConclusionsParental perceived access to physical activity opportunities in the local community is a potential mechanism of behavior change for children and mediated the effect of the SCORES intervention on objectively measured physical activity.

Randomised controlled feasibility study of a school-based multi-level intervention to increase physical activity and decrease sedentary behaviour among vocational school students

BackgroundNo school-based physical activity (PA) interventions among older adolescents have demonstrated long-term effectiveness, and few of them so far have addressed sedentary behaviour (SB). Based on behavioural theories and evidence, we designed a multi-level intervention to increase PA and decrease SB among vocational school students. This study investigates feasibility and acceptability of two main intervention components and research procedures. We also examine uptake of behaviour change techniques (BCTs) by the participants.MethodsDesign was an outcome assessor blinded, cluster-randomised controlled trial. Four classes of students (matched pairs) were randomised into one intervention and one control arm. The intervention consisted of (1) a 6-h group-based intervention for students, (2) two 2-h training workshops to reduce their students’ sitting in class for teachers, and (3) provision of light PA equipment in classrooms. At baseline (T1), mid-intervention (T2) at 3 weeks, post-intervention (T3) and 6 months after baseline (T4) we measured hypothesised psychosocial mediators and self-reported PA and sitting. Objective assessment of PA and SB (7-day accelerometry) was conducted at T1, T3 and T4. Body composition (bioimpedance) was measured at T1 and T4. Students and teachers in the intervention arm filled in acceptability questionnaires at T3.ResultsRecruitment rate was 64% (students) and 88.9% (teachers), and at T3, all post-intervention measurements were completed by 33 students (retention 76.7%) and 15 teachers (retention 93.8%). Acceptability ratings of sessions were high (students M = 6.29, scale 1–7), and data collection procedures were feasible. Intervention arm students reported increased use of BCTs, but uptake of some key BCTs was suboptimal. BCT use correlated highly with objective measures of PA. Based on both self-report and student evaluation, teachers in the intervention arm increased the use of sitting reduction strategies at post-intervention and T4 follow-up (p < .05).ConclusionsWe detected willingness of the target groups to participate, good response rates to questionnaires, adequate retention, as well as acceptability of the trial protocol. Investigation of BCT use among students helped further enhance intervention procedures to promote BCT use. After making necessary modifications identified, intervention effectiveness can next be tested in a definitive trial.Trial registrationISRCTN34534846. Registered 23 May 2014. Retrospectively registered.

Individual, social and environmental predictors of physical activity in severe to morbid obese African American adolescents

The purpose of this study was to predict low, moderate, hard and very hard physical activity (PA) and walking/biking/jogging based PA. One-hundred and fifty-nine severe to morbid obese African-American adolescents participated. We predicted 8% of the variance in hard PA largely due to family support and 10% of the variance in very hard PA due to other support (e.g. counselor) and having home PA equipment. We also predicted 10% of the variance in walking/biking/jogging due to the walkability of the neighborhood. Our findings support the value of social support and environmental supports in helping obese African American adolescents increase PA.

Validity and reliability of HOP-Up: a questionnaire to evaluate physical activity environments in homes with preschool-aged children.

BackgroundEarly identification of physical activity (PA) opportunities in the home and neighborhood environment may help obesity prevention efforts in households with young children. This cross-sectional study’s purpose was to develop a brief, easy-to-use, self-report inventory called Home Opportunities for Physical activity check-Up (HOP-Up), to evaluate the availability and accessibility of PA space and equipment in and near homes with preschool children, and establish its validity and reliability.MethodsThe HOP-Up was field tested by two trained researchers and parents of preschool-aged children (n = 50; 71 % white). To establish criterion validity, researchers were the ‘gold standard’ and visited participants’ homes to assess their PA environments using the HOP-Up, while participants separately completed their HOP-Up. Two weeks later, parents completed the HOP-Up online for test-retest reliability. After minor survey refinements, exploratory and confirmatory factor analysis using a split-half cross validation procedure was conducted in a larger sample of participants (n = 655, 60 % white) who completed the HOP-Up online to examine its factor structure. To establish convergent validity, correlations were conducted to compare HOP-Up scales from the factor solution generated with PA behavior and cognitions, and reported screen time.ResultsIntra-class correlations (ICCs) examining HOP-Up item agreement between researcher and parents revealed slight to substantial agreement (range 0.22 to 0.81) for all items. ICCs for all HOP-Up items ranged from fair to substantial agreement between parent responses at both time points (range 0.42 to 0.95). Exploratory factor analysis revealed a five factor solution (18 items), supported eigen values, scree plots, review for contextual sense, and confirmatory factor analysis. Additionally, there were significant (p < 0.05) positive correlations among nearly all five HOP-Up scales with parent and child physical activity levels (range 0.08 to 0.35), and values parents placed on PA for self and child (range 0.16 to 0.35), and negative correlations of Neighborhood Space & Supports for PA scale with parent and child reported screen time (r = −0.11, r = −0.13, respectively).ConclusionsFindings support the psychometric properties of this brief, easy-to-use, HOP-Up questionnaire, which may help parents, prevention researchers, residential planners, and practitioners increase their understanding of how the home environment—inside, outside, and the neighborhood— impacts preschool children’s physical activity levels.

Physical activity and screen use policy and practices in childcare: results from a survey of early childhood education services in New Zealand

ObjectiveTo investigate written policies, equipment, strategies and barriers to children's activity in early childhood education settings, including participation in health promotion programs and reported time children spend in active play and using screens while in care. MethodsCross‐sectional online survey of licensed childcare services in Auckland and Waikato. Policies were scored using a validated tool (WellCCAT‐NZ). Results were analysed using descriptive statistics and multivariate regression. ResultsManagers, head teachers or similar from 237 services completed the survey (28% of invited services). Of these, 35% had a written activity policy; most policies scored low on the WellCCAT‐NZ. Comprehensive and strongly worded policies were associated with a lower adult‐to‐child ratio (p=0.03, adjusted for ECE characteristics). No policies addressed screen use. Children were reported to have teacher‐led activity 80 minutes/day, and child‐led activity five hours/day (indoor and outdoor). Children watched television daily in 2% and weekly in 11% the services; and used computers daily in 11% and weekly in 22% of services. Fewer than half of services participated in health promotion programs with a physical activity component. ConclusionsChildcare services reported having adequate equipment, space and time for physical activity of children; however, there are low participation rates in activity programs and a notable absence of written policy.

Policy, environment, and worksite fitness program participation among financial enterprise employees in Taiwan

Background/ObjectiveThis study explored the intertwined effects between the policies and regulations of the companies and personal background on participation in the physical fitness programs and leisure-time activities in financial enterprises. MethodsA total of 823 employees were selected as the sample with the multilevel stratification random-sampling technique. The response rate was 52.0%. Data were analyzed with descriptive statistics and hierarchical linear logistic regression. ResultsThirty-two percent and 39% of the employees participated in the physical fitness programs and leisure-time activities, respectively. The factors affecting participation were categorized into intrapersonal factors, interpersonal processes, and primary groups, as well as institutional factors. In the interpersonal processes and primary groups level, higher family social support, more equipment in health promotion was associated with more participation in the programs. With the influence from the institutional level, it was found that health promotion policy amplified the relationship between employees' age and participation, but attenuated the relationship between education level and participation. Health promotion equipment in the institutes attenuated the relationship between colleague social support, family social support, and education level with program participation. Physical activity equipment in the community attenuated the relationship between family social support and program participation. ConclusionThe influential factors of social support and worksite environment could predict the employees' participation in the physical fitness programs and leisure-time physical activities. Health promotion policy and equipment attenuated the negative effects of nonparticipation as well as amplified the positive effects of participation.

Classes of Physical Activity and Sedentary Behavior in 5th Grade Children.

We identified classes of physical activity (PA) and sedentary behaviors (SB) in 5th grade children, associated factors, and trajectories of change into 7th grade. This study included N = 495 children (221 boys, 274 girls) who participated in the Transitions and Activity Changes in Kids (TRACK) Study. PA was assessed objectively as well as by self-report. Children, parents, and school administrators completed surveys to assess related factors. Latent class analysis, growth modeling, and adjusted multinomial logistic regression procedures were used to classify children based on self-reported PA and SB and examine associated factors. Three classes of behavior were identified: Class 1: Low PA/Low SB; Class 2: Moderate PA/ High SB; and Class 3: High PA/High SB (boys) or Class 3: High PA (girls). Class 3 children had higher levels of self-efficacy (boys), and enjoyment, parental support, and physical activity equipment at home (girls). Class 2 boys and Class 3 girls did not experience decline in PA (accelerometer) over time. Self-efficacy (boys) and home environment (girls) may play a role in shaping patterns of PA in children. Findings may help to inform future interventions to encourage children to meet national PA guidelines.

Organized Sports and Unstructured Active Play as Physical Activity Sources in Children From Low-Income, Chicago Households.

This study tested associations of organized sports participation and unstructured active play with overall moderate and vigorous physical activity (MVPA) in low-income children and examined factors associated with participation frequency. Research staff visited 88 low-income Chicago households with children ages 6-13 years. MVPA was assessed through 7-day accelerometry. Researchers documented the home availability of physical activity equipment. Caregivers reported on child participation in organized sports and unstructured active play, family support for physical activity, perceived neighborhood safety, and access to neighborhood physical activity venues. Despite similar participation in organized sports and unstructured active play, boys accumulated more MVPA than girls. MVPA was predicted by an interaction between gender and unstructured active play. Boys accumulated 23-45 additional minutes of weekday MVPA and 53-62 additional minutes of weekend MVPA through unstructured active play, with no such associations in girls. Higher reported neighborhood safety and family support for physical activity were associated with engagement in unstructured active play for both genders, and with participation in organized sports for girls. Physical activity interventions for low-income, urban children should emphasize unstructured active play, particularly in boys. Fostering family support for physical activity and safe play environments may be critical intervention components.