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dc.contributor.authorSchlechter, Chelsey R
dc.contributor.authorGuagliano, Justin
dc.contributor.authorRosenkranz, Richard R
dc.contributor.authorMilliken, George A
dc.contributor.authorDzewaltowski, David A
dc.date.accessioned2018-08-31T10:42:44Z
dc.date.available2018-08-31T10:42:44Z
dc.date.issued2018-02-08
dc.identifier.issn1471-2458
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/279049
dc.description.abstractBACKGROUND: Youth sport (YS) reaches a large number of children world-wide and contributes substantially to children's daily physical activity (PA), yet less than half of YS time has been shown to be spent in moderate-to-vigorous physical activity (MVPA). Physical activity during practice is likely to vary depending on practice structure that changes across YS time, therefore the purpose of this study was 1) to describe the type and frequency of segments of time, defined by contextual characteristics of practice structure, during YS practices and 2) determine the influence of these segments on PA. METHODS: Research assistants video-recorded the full duration of 28 practices from 14 boys' flag football teams (2 practices/team) while children concurrently (N = 111, aged 5-11 years, mean 7.9 ± 1.2 years) wore ActiGraph GT1M accelerometers to measure PA. Observers divided videos of each practice into continuous context time segments (N = 204; mean-segments-per-practice = 7.3, SD = 2.5) using start/stop points defined by change in context characteristics, and assigned a value for task (e.g., management, gameplay, etc.), member arrangement (e.g., small group, whole group, etc.), and setting demand (i.e., fosters participation, fosters exclusion). Segments were then paired with accelerometer data. Data were analyzed using a multilevel model with segment as unit of analysis. RESULTS: Whole practices averaged 34 ± 2.4% of time spent in MVPA. Free-play (51.5 ± 5.5%), gameplay (53.6 ± 3.7%), and warm-up (53.9 ± 3.6%) segments had greater percentage of time (%time) in MVPA compared to fitness (36.8 ± 4.4%) segments (p ≤ .01). Greater %time was spent in MVPA during free-play segments compared to scrimmage (30.2 ± 4.6%), strategy (30.6 ± 3.2%), and sport-skill (31.6 ± 3.1%) segments (p ≤ .01), and in segments that fostered participation (36.1 ± 2.7%) than segments that fostered exclusion (29.1 ± 3.0%; p ≤ .01). Significantly greater %time was spent in low-energy stationary behavior in fitness (15.7 ± 3.4%) than gameplay (4.0 ± 2.9%) segments (p ≤ .01), and in sport-skill (17.6 ± 2.2%) than free-play (8.2 ± 4.2%), gameplay, and warm-up (10.6 ± 2.6%) segments (p < .05). CONCLUSIONS: The %time spent in low-energy stationary behavior and in MVPA differed by characteristics of task and setting demand of the segment. Restructuring the routine of YS practice to include segments conducive to MVPA could increase %time spent in MVPA during practice. As YS reaches a large number of children worldwide, increasing PA during YS has the potential to create a public health impact.
dc.languageeng
dc.publisherSpringer nature
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectDirect observation
dc.subjectLesson context
dc.subjectModerate-to-vigorous physical activity
dc.subjectOrganized sport
dc.subjectVideo observation
dc.subjectYouth
dc.subjectAccelerometry
dc.subjectChild
dc.subjectChild, Preschool
dc.subjectCross-Sectional Studies
dc.subjectExercise
dc.subjectFootball
dc.subjectHumans
dc.subjectMale
dc.subjectObservation
dc.subjectTime Factors
dc.subjectVideotape Recording
dc.subjectYouth Sports
dc.titlePhysical activity patterns across time-segmented youth sport flag football practice.
dc.typeArticle
prism.endingPage226
prism.issueIdentifier1
prism.publicationDate2018
prism.publicationNameBMC Public Health
prism.startingPage226
prism.volume18
dc.identifier.doi10.17863/CAM.26429
dcterms.dateAccepted2018-01-22
rioxxterms.versionofrecord10.1186/s12889-018-5108-3
rioxxterms.versionVoR
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/
rioxxterms.licenseref.startdate2018-02-08
dc.contributor.orcidGuagliano, Justin [0000-0002-4450-5700]
dc.identifier.eissn1471-2458
dc.publisher.urlhttps://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-018-5108-3#Decs
rioxxterms.typeJournal Article/Review
cam.issuedOnline2018-02-08
dc.identifier.urlhttps://bmcpublichealth.biomedcentral.com/articles/10.1186/s12889-018-5108-3#Decs


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International