Læknablaðið - 15.02.2011, Síða 17

FRÆÐIGREINAR
RANNSÓKN
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Physical activity of 9 and 15 year old lcelandic children - Public health objectives
and relations of physical activity to gender, age, anthropometry and area of living
Objective: The main objective of the study was to assess
to what degree nine and fifteen year old lcelandic children
followed the national physical activity (PA) guidelines for
children set forth by the lcelandic Public Health Institute,
which recommend no less than 60 minutes of moderate-
to-vigorous physical activity a day (MVPA).
Material and methods: The study was conducted
between September 2003 and January 2004 at eighteen
randomly selected schools in the capital area of Reykjavik
and towns and rural areas in the northeast. All nine years
old (N=662) and fifteen years old (N=661) students were
offered to participate. Half of the children were randomly
chosen to partake in the PA part of the study where 176
nine-year-old and 162 fifteen-year-old children yielded
usable data. We measured participants’ height, weight
and skinfold thickness and their PA by ActiGraph™ with
respect to moderate-to-vigorous intensity (defined as
counts >3400 cpm) and average volume.
Results: Only 5% of 9-year-old and 9% of 15 year-old
students followed the recommended PA guidelines of at
least 60 minutes a day of MVPA. MVPA was positively
associated with sex (being a boy) and age, but negatively
associated with skinfold thickness. Those living in the
capital area of Reykjavik rather than in smaller towns and
rural areas were likelier to accrue more minutes of MVPA
per day.
Conclusion: The results highlight the importance of
developing PA interventions targeting children of school
age. It is important to research and evaluate different ways
as to how these interventions should best be conducted.
Magnusson K, Arngrimsson SA, Sveinsson Th, Johannsson E.
Physical activity of 9 and 15 year old lcelandic children - Public health objectives and relations of physical activity to gender,
age, anthropometry and area of living. Icel Med J 2011; 97: 75-81
Key words: physical activity, children, body composition, accelerometers.
Correspondence: Kristján Þór Magnússon, ktm@hi.is
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Barst: 21. janúar 2010, - samþykkt til birtingar: 5. desember 2010
Hagsmunatengsl: Engin
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