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Life on holidays: differences in activity composition between school and holiday periods in Australian children.

ABSTRACT: BACKGROUND:Recently, a small number of studies have suggested that gains in fitness and reductions in body fat achieved during the school term are reversed or stagnate during the holiday period. This may be associated with changed activity patterns. The aim of this study was to compare 24-h activity compositions between school and holiday periods in Australian children. METHODS:The participants in this study were 366 children (53% female, 13.4?±?2.3?years) who were a subgroup of the 2007 Australian National Children's Nutrition and Physical Activity Survey. Each child recalled use of time on at least one school day, one weekend day and one holiday using the Multimedia Activity Recall for Children and Adults. Composite "in-term" and "holiday" use-of-time profiles were generated by weighting school days by 5, and weekends by 2 where data were available. Difference between holiday and in-term time use was assessed using a compositional multivariate linear model for repeated measures. Subsequent models tested for interaction between time of measurement and socio-economic status or body mass index. RESULTS:Time use was significantly different between holidays and in-term days (F?=?103, p?

SUBMITTER: Olds T

PROVIDER: S-EPMC6546614 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature

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Life on holidays: differences in activity composition between school and holiday periods in Australian children.

Olds Tim T Maher Carol C Dumuid Dorothea D

BMC public health 20190603 Suppl 2

<h4>Background</h4>Recently, a small number of studies have suggested that gains in fitness and reductions in body fat achieved during the school term are reversed or stagnate during the holiday period. This may be associated with changed activity patterns. The aim of this study was to compare 24-h activity compositions between school and holiday periods in Australian children.<h4>Methods</h4>The participants in this study were 366 children (53% female, 13.4 ± 2.3 years) who were a subgroup of t ...[more]

PMID: 31159768

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Project description:BACKGROUND:Emerging evidence suggests that children become fatter and less fit over the summer holidays but get leaner and fitter during the in-school period. This could be due to differences in diet and time use between these distinct periods. Few studies have tracked diet and time use across the summer holidays. This study will measure rates of change in fatness and fitness of children, initially in Grade 4 (age 9?years) across three successive years and relate these changes to changes in diet and time use between in-school and summer holiday periods. METHODS:Grade 4 Children attending Australian Government, Catholic and Independent schools in the Adelaide metropolitan area will be invited to participate, with the aim of recruiting 300 students in total. Diet will be reported by parents using the Automated Self-Administered 24-h Dietary Assessment Tool. Time use will be measured using 24-h wrist-worn accelerometry (GENEActiv) and self-reported by children using the Multimedia Activity Recall for Children and Adults (e.g. chores, reading, sport). Measurement of diet and time use will occur at the beginning (Term 1) and end (Term 4) of each school year and during the summer holiday period. Fitness (20-m shuttle run and standing broad jump) and fatness (body mass index z-score, waist circumference, %body fat) will be measured at the beginning and end of each school year. Differences in rates of change in fitness and fatness during in-school and summer holiday periods will be calculated using model parameter estimate contrasts from linear mixed effects model. Model parameter estimate contrasts will be used to calculate differences in rates of change in outcomes by socioeconomic position (SEP), sex and weight status. Differences in rates of change of outcomes will be regressed against differences between in-school and summer holiday period diet and time use, using compositional data analysis. Analyses will adjust for age, sex, SEP, parenting style, weight status, and pubertal status, where appropriate. DISCUSSION:Findings from this project may inform new, potent avenues for intervention efforts aimed at addressing childhood fitness and fatness. Interventions focused on the home environment, or alternatively extension of the school environment may be warranted. TRIAL REGISTRATION:Australia New Zealand Clinical Trials Registry, identifier ACTRN12618002008202 . Retrospectively registered on 14 December 2018.

Project description:ObjectivesTo investigate factors associated with movement behaviours among White British (WB) and South Asian (SA) children aged 6-8 years during school terms and holidays.DesignCross-sectional.SettingThree primary schools from the Bradford area, UK.ParticipantsOne hundred and sixty WB and SA children aged 6-8 years.Primary and secondary outcomesSedentary behaviour (SB), light physical activity (LPA) and moderate-to-vigorous physical activity (MVPA) measured by accelerometry during summer, winter and spring and during school terms and school holidays. Data were analysed using multivariate mixed-effects multilevel modelling with robust SEs. Factors of interest were ethnicity, holiday/term, sex, socioeconomic status (SES), weight status, weekend/weekday and season.ResultsOne hundred and eight children (67.5%) provided 1157 valid days of data. Fifty-nine per cent of children were WB (n=64) and 41% (n=44) were SA. Boys spent more time in MVPA (11?min/day, p=0.013) compared with girls and SA children spent more time in SB (39?min, p=0.017) compared with WB children in adjusted models. Children living in higher SES areas were more sedentary (43?min, p=0.006) than children living in low SES areas. Children were more active during summer (15?min MVPA, p<0.001; 27 LPA, p<0.001) and spring (15?min MVPA, p=0.005; 38?min LPA, p<0.001) and less sedentary (-42?min and -53?min, p<0.001) compared with winter. Less time (8?min, p=0.012) was spent in LPA during school terms compared with school holidays. Children spent more time in MVPA (5?min, p=0.036) during weekend compared with weekdays. Overweight and obese children spent more time in LPA (21?min, p=0.021) than normal-weight children.ConclusionThe results of our study suggest that significant child level factors associated with movement behaviours are ethnicity, sex, weight-status and area SES. Significant temporal factors are weekends, school holidays and seasonality. Interventions to support health enhancing movement behaviours may need to be tailored around these factors.

Project description:BACKGROUND:Current guidelines suggest too little sleep, too little physical activity, and too much sedentary time are associated with poor health outcomes. These behaviours may also influence academic performance in school children. The primary purpose of this study was to examine the relationships between sleep, physical activity, or sedentary behaviours and academic performance in a school with a well-developed and integrated technology use and well-being program. METHODS:This was a cross-sectional survey of students (n?=?934, Grades 5-12) in an Australian school with a bring-your-own device (tablet or laptop computer) policy. Students reported sleep, physical activity, and sedentary (screen and non-screen) behaviours. Academic performance was obtained from school records. Linear regressions were used to test the association between behaviours and academic performance outcomes. RESULTS:Seventy-four percent of students met sleep guidelines (9 to 11?h for children 5-13?years and 8 to 10?h for 14-17?year olds), 21% met physical activity guidelines (60?min of moderate-to-vigorous physical activity every day), and 15% met screen time guidelines (no more than 2?h recreational screen time per day); only 2% met all three. There were no associations between meeting sleep guidelines and academic performance; however later weekend bedtimes were associated with poorer academic performance (-?3.4 points on the Average Academic Index, 95%CI: -?5.0, -?1.7, p?<?.001). There were no associations between meeting physical activity guidelines and academic performance. Meeting screen guidelines was associated with higher Average Academic Index (5.8, 95%CI: 3.6, 8.0, p?<?.001), Maths 7.9, 95%CI: 4.1, 11.6, p?<?.001) and English scores (3.8, 95%CI: 1.8, 5.8, p?<?.001) and higher time in sedentary behaviours was associated with poorer academic performance, including total sedentary behaviours in hrs/day (5.8 points on Average Academic Index, 95%CI: 3.6, 8.0, p?<?.001. Meeting at least two of the three behaviour guidelines was associated with better academic performance. CONCLUSIONS:Sleep and sedentary behaviours were linked to academic performance. School communities should emphasize comprehensive wellness strategies to address multiple behaviours to maximize student health and academic success.

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Life on holidays: differences in activity composition between school and holiday periods in Australian children.

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Life on holidays: differences in activity composition between school and holiday periods in Australian children.

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