Temporal trends in physical activity levels across more than a decade - a national physical activity surveillance system among Norwegian children and adolescents.
Int J Behav Nutr Phys Act
; 18(1): 55, 2021 04 26.
Article
in En
| MEDLINE
| ID: mdl-33902618
ABSTRACT
BACKGROUND:
There is a scarcity of device measured data on temporal changes in physical activity (PA) in large population-based samples. The purpose of this study is to describe gender and age-group specific temporal trends in device measured PA between 2005, 2011 and 2018 by comparing three nationally representative samples of children and adolescents.METHODS:
Norwegian children and adolescents (6, 9 and 15-year-olds) were invited to participate in 2005 (only 9- and 15-year-olds), 2011 and 2018 through cluster sampling (schools primary sampling units). A combined sample of 9500 individuals participated. Physical activity was assessed by hip worn accelerometers, with PA indices including overall PA (counts per minute), moderate-to-vigorous intensity PA (MVPA), and PA guideline adherence (achieving on average ≥ 60 min/day of moderate-to-vigorous PA). Random-effects linear regressions and logistic regressions adjusted for school-level clusters were used to analyse temporal trends.FINDINGS:
In total, 8186 of the participating children and adolescents provided valid PA data. Proportions of sufficiently active 6-year-olds were almost identical in 2011 and 2018; boys 95% (95% CI 92, 97) and 94% (95%CI 92, 96) and girls 86% (95% CI 83, 90) and 86% (95% CI 82, 90). Proportions of sufficiently active 15-year-olds in 2005 and 2018 were 52% (95% CI 46, 59) and 55% (95% CI 48, 62) in boys, and 48% (95% CI 42, 55) and 44% (95% CI 37, 51) in girls, respectively, resulting from small differences in min/day of MVPA. Among 9-year-old boys and girls, proportions of sufficiently active declined between 2005 and 2018, from 90% (95% CI 87, 93) to 84% (95% CI 80, 87)) and 74% (95% CI 69, 79) to 68% (95% CI 64, 72), respectively. This resulted from 9.7 min/day less MVPA in boys (95% CI - 14.8, - 4.7; p < 0.001) and 3.2 min/day less MVPA (95% CI - 7.0, 0.7; p = 0.106) in girls.CONCLUSIONS:
PA levels have been fairly stable between 2005, 2011 and 2018 in Norwegian youth. However, the declining PA level among 9-year-old boys and the low proportion of 15-year-olds sufficiently active is concerning. To evaluate the effect of, and plan for new, PA promoting strategies, it is important to ensure more frequent, systematic, device-based monitoring of population-levels of PA.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Exercise
Type of study:
Screening_studies
Limits:
Adolescent
/
Child
/
Female
/
Humans
/
Male
Country/Region as subject:
Europa
Language:
En
Journal:
Int J Behav Nutr Phys Act
Year:
2021
Document type:
Article
Affiliation country:
Norway