Abstract:
:The aim of this study was to investigate the effect of a 2-year school-based physical activity (PA) intervention in 9-year-old children on cardiovascular disease (CVD) risk factors. One intervention school (I-school) (n=125) and one control school (C-school) (n=131) were included. The children at the I-school carried out 60 min of PA daily. The PA lessons were planned, organized and led by expert physical education (PE) teachers. In the C-school, children were offered the normal 45 min of PE twice weekly. The intervention resulted in a greater beneficial development in systolic (P=0.003) and diastolic (P=0.002) blood pressure, total cholesterol-to-high-density lipoprotein cholesterol ratio (P=0.011), triglyceride (P=0.030) and peak oxygen uptake (P<0.001) in I-school children than in C-school children. No significant differences were observed in waist circumference, body mass index and the homeostasis model assessment for insulin resistance between the two groups. Furthermore, the intervention, primarily carried out at moderate intensity, had the strongest impact in children with the least favorable starting point. In conclusion, a daily school-based PA intervention can beneficially modify children's CVD risk profile if the intervention has sufficient duration and includes a substantial amount of daily PA, and if the PA is implemented by expert PE teachers.
journal_name
Scand J Med Sci Sportsjournal_title
Scandinavian journal of medicine & science in sportsauthors
Resaland GK,Anderssen SA,Holme IM,Mamen A,Andersen LBdoi
10.1111/j.1600-0838.2010.01181.xsubject
Has Abstractpub_date
2011-12-01 00:00:00pages
e122-31issue
6eissn
0905-7188issn
1600-0838journal_volume
21pub_type
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journal_title:Scandinavian journal of medicine & science in sports
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