Dataset Information

Measuring Temporal Differences in Rural Canadian Children's Moderate-to-Vigorous Physical Activity.

ABSTRACT: The purpose of this study was to measure the factors that influence children's moderate-to-vigorous physical activity (MVPA) during school curriculum time, recess time, and outside school time in a rural area. During the Fall and Winter of 2016, 34 boys and 55 girls aged 8-14 years from rural communities in rural Northwestern Ontario participated in the Spatial Temporal Environment and Activity Monitoring project. The children's MVPA was measured using an accelerometer, and child-level demographic, behavioral, and environmental data were gathered from surveys, passively logging global positioning units, and municipal datasets. Data on daily temperature and precipitation were gathered from the closest Environment Canada weather station. A mixed model was used to assess the relationship between child- and day-level factors and children's MVPA. On average, children were getting 12.9 min of MVPA during recess, 17.7 min during curriculum time, and 29.0 min of MVPA outside school time. During all three time points, boys were more active than girls. During curriculum time, children in lower grades were more active, and the weather had differing impacts depending on the time of day. The findings of this study illustrate the differences in MVPA and the factors that influence MVPA by time of day. Examining different time segments provides valuable information for understanding children's MVPA patterns.

SUBMITTER: Button BLG

PROVIDER: S-EPMC7727807 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature

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Measuring Temporal Differences in Rural Canadian Children's Moderate-to-Vigorous Physical Activity.

Button Brenton L G BLG Clark Andrew F AF Martin Gina G Graat Megan M Gilliland Jason A JA

International journal of environmental research and public health 20201124 23

The purpose of this study was to measure the factors that influence children's moderate-to-vigorous physical activity (MVPA) during school curriculum time, recess time, and outside school time in a rural area. During the Fall and Winter of 2016, 34 boys and 55 girls aged 8-14 years from rural communities in rural Northwestern Ontario participated in the Spatial Temporal Environment and Activity Monitoring project. The children's MVPA was measured using an accelerometer, and child-level demograph ...[more]

PMID: 33255449

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Project description:IntroductionMost children do not meet the recommendations for school-time and daily moderate-to-vigorous physical activity, with significant demographic disparities and declines over the elementary school years. Investigators examined the impact of Fueling Learning through Exercise study school-based physical activity programs on school-time and total daily moderate-to-vigorous physical activity among lower-income school children.Design, participants, and interventionUrban elementary schools (N=18) were cluster randomized to 100 Mile Club, Just Move, or control. Data collection and analyses occurred from 2015 to 2019 among third- and fourth-grade school children (N=1,008) across 2 academic years.Main outcome measuresStudent's moderate-to-vigorous physical activity was measured by 7-day accelerometry (Actigraph GT3X+) at baseline (before intervention), midpoint (6 months), and endpoint (18 months). Mixed-effects linear regression models examined program impact on school-time and daily moderate-to-vigorous physical activity, adjusting for clustering, demographics, weight status, free/reduced-price lunch eligibility, school physical activity environment, wear time, and weather. Program reach by sex, weight status, race/ethnicity, and baseline activity levels was explored.ResultsOf the 979 participants analyzed (aged 8.7 [SD=0.7] years, 44% male, 60% non-White, 40% overweight/obese, 55% eligible for free/reduced-price lunch), 8.4% (18.2 [SD=7.9] minutes per day) and 19.8% (45.6 [SD=19.4] minutes per day) fulfilled the 30-minute school-time and 60-minute daily moderate-to-vigorous physical activity recommendations at baseline, respectively. Overall, daily moderate-to-vigorous physical activity decreased from baseline to 18 months (p<0.001, -5.3 minutes, 95% CI= -8.2, -2.4) with no effect of programming. However, for school-time moderate-to-vigorous physical activity, intervention schools maintained school-time moderate-to-vigorous physical activity across the 2 academic years, whereas school-time moderate-to-vigorous physical activity decreased in control schools (p=0.004, -2.3 minutes, 95% CI= -4.3, -0.4). Program reach on school-time moderate-to-vigorous physical activity appeared equitable by sex and weight status but was different by race/ethnicity (p<0.001).ConclusionsTwo different school-based physical activity programs were effective in preventing the decline in school-time moderate-to-vigorous physical activity that is typical across the elementary years, with similar reach by sex and weight status. Multiple opportunities for physical activity during school are needed to promote meeting school-time moderate-to-vigorous physical activity recommendations among diverse children.Trial registrationThis study is registered at www.clinicaltrials.gov NCT02810834.

Project description:BackgroundAfterschool programs are an important setting in which to promote children's physical activity. This study examines the association of environmental and policy characteristics on the moderate-to-vigorous physical activity and sedentary behavior of children attending afterschool programs.MethodsA total of 1302 children attending 20 afterschool programs across South Carolina wore accelerometers (ActiGraph GT3X+) for up to 4non-consecutive days. Policy-level characteristics were evaluated using the Healthy Afterschool Program Index-Physical Activity scale. Physical activity space was measured using a measuring wheel (indoor, ft(2)) and Geographical Information Systems software (outdoor, acres). The structure (free-play or organized) of activity opportunities was evaluated via direct observation. Time spent in moderate-to-vigorous physical activity and sedentary, both indoors and outdoors, was estimated using accelerometry.ResultsFor every 5000 ft(2) of utilized indoor activity space an additional 2.4 and 3.3 min/day of sedentary behavior was observed among boys and girls, respectively. A higher ratio of free-play to organized play was associated with higher indoor sedentary behavior among boys and girls (3.9 min/day and 10.0 min/day, respectively). For every 1 acre of outdoor activity space used, an additional 2.7 min/day of moderate-to-vigorous physical activity was observed for boys. A higher free-play to organized play ratio was associated with higher outdoor moderate-to-vigorous physical activity for boys and girls (4.4 and 3.4 min/day increase, respectively). Policy characteristics were unrelated to moderate-to-vigorous physical activity levels and time spent sedentary.ConclusionFindings indicate that policies and size of activity space had limited influence on moderate-to-vigorous physical activity and sedentary behavior, suggesting that a programmatic structure may be a more effective option to improve moderate-to-vigorous physical activity levels of children attending afterschool programs.

Project description:PurposeThis study aimed to examine the validity of wrist acceleration cut points for classifying moderate (MPA), vigorous (VPA), and moderate-to-vigorous (MVPA) physical activity.MethodsFifty-seven children (5-12 yr) completed 15 semistructured activities. Three sets of wrist cut points (>192 mg, >250 mg, and >314 mg), previously developed using Euclidian norm minus one (ENMO192+), GENEActiv software (GENEA250+), and band-pass filter followed by Euclidian norm (BFEN314+), were evaluated against indirect calorimetry. Analyses included classification accuracy, equivalence testing, and Bland-Altman procedures.ResultsAll cut points classified MPA, VPA, and MVPA with substantial accuracy (ENMO192+: κ = 0.72 [95% confidence interval = 0.72-0.73], MVPA: area under the receiver operating characteristic curve (ROC-AUC) = 0.85 [0.85-0.86]; GENEA250+: κ = 0.75 [0.74-0.76], MVPA: ROC-AUC = 0.85 [0.85-0.86]; BFEN314+: κ = 0.73 [0.72-0.74], MVPA: ROC-AUC = 0.86 [0.86-0.87]). BFEN314+ misclassified 19.7% non-MVPA epochs as MPA, whereas ENMO192+ and GENEA250+ misclassified 32.6% and 26.5% of MPA epochs as non-MVPA, respectively. Group estimates of MPA time were equivalent (P < 0.01) to indirect calorimetry for the BFEN314+ MPA cut point (mean bias = -1.5%, limits of agreement [LoA] = -57.5% to 60.6%), whereas estimates of MVPA time were equivalent (P < 0.01) to indirect calorimetry for the ENMO192+ (mean bias = -1.1%, LoA = -53.7% to 55.9%) and GENEA250+ (mean bias = 2.2%, LoA = -56.5% to 52.2%) cut points. Individual variability (LoA) was large for MPA (min: BFEN314+, -60.6% to 57.5%; max: GENEA250+, -42.0% to 104.1%), VPA (min: BFEN314+, -238.9% to 54.6%; max: ENMO192+, -244.5% to 127.4%), and MVPA (min: ENMO192+, -53.7% to 55.0%; max: BFEN314+, -83.9% to 25.3%).ConclusionWrist acceleration cut points misclassified a considerable proportion of non-MVPA and MVPA. Group-level estimates of MVPA were acceptable; however, error for individual-level prediction was larger.

Dataset Information

Measuring Temporal Differences in Rural Canadian Children's Moderate-to-Vigorous Physical Activity.

Publications

Measuring Temporal Differences in Rural Canadian Children's Moderate-to-Vigorous Physical Activity.

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