Physical activity among Norwegian preschoolers varies by sex, age, and season
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Published on: August 22, 2012
Ada Kristine Ofrim Nilsen1,2, Sigmund Alfred Anderssen1,2, Einar Ylvisaaker1
1Department of Sport, Food and Natural Sciences, Faculty of Education, Arts and Sports, Western Norway University of Applied Sciences, Sogndal, Norway.
Insights
Preschool boys are more active than girls, with physical activity (PA) increasing with age and varying by season. These factors interact, highlighting the complexity of children's PA levels.
Area of Science:
- Pediatric Health
- Public Health Promotion
- Child Development
Background:
- Understanding physical activity (PA) in preschoolers is crucial for public health.
- Previous research has not fully explored PA variations by sex, age, and season in this demographic.
Purpose of the Study:
- To investigate physical activity levels in a large sample of Norwegian preschoolers.
- To explore how PA varies and develops based on sex, age, and season.
Main Methods:
- 1154 Norwegian preschoolers (mean age 4.7 years, 52% boys) wore accelerometers for 14 days.
- 330 children had repeated PA measurements across seasons.
- Linear mixed models analyzed PA (total, light, moderate, vigorous, moderate-to-vigorous, sedentary) by sex, age, and season.
Main Results:
- Boys exhibited higher PA levels (72 min/day MVPA) than girls (59 min/day MVPA).
- PA increased with age and was higher in spring/summer than autumn/winter (P < 0.001).
- Boys showed a greater age-related PA increase than girls, influenced by seasonal MVPA.
Conclusions:
- Boys are consistently more active and less sedentary than girls.
- Preschoolers' PA increases with age, with seasonal variations favoring spring/summer.
- Interactions between sex, age, and season significantly influence preschoolers' physical activity.
Background:
Knowledge of physical activity (PA) in preschool populations is important for public health promotion. We investigated levels of PA in a large sample of Norwegian preschoolers and explored variations and development in PA by sex, age, and season.
Methods:
Physical activity levels of 1154 children (mean age 4.7 years, 52% boys) were measured by accelerometry (ActiGraph GT3X+) for 14 consecutive days between autumn 2015 and summer 2016. Additionally, 330 children provided up to 3 repeated measurements of PA across seasons. A linear mixed model was applied to analyze associations and interactions of total PA (cpm), light PA (LPA), moderate PA (MPA), vigorous PA (VPA), moderate-to-vigorous PA (MVPA), sedentary time (SED), sex, age, and season.
Results:
Boys and girls spent mean (standard deviation) 72 (21) and 59 (18) min/d in MVPA and had a total PA of 790 (202) and 714 (192) cpm/d, respectively. Boys had higher PA levels than girls, PA increased with age, and PA was higher during spring/summer than autumn/winter (P < 0.001). Boys had a greater increase in PA by age than girls (P < 0.05), mainly due to increased MVPA during spring/summer (p for sex × age × season=0.009).
Conclusions:
Boys were consistently more active and less sedentary than girls, and PA increased with age for both sexes. Boys exhibited a greater increase than girls in PA by age, and PA differed across seasons, with higher levels of MVPA during spring/summer. Differences in MVPA between boys and girls, among age groups, and among seasons seem to be interrelated, indicating that many factors influence preschoolers' PA.
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