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The effect of a two‐year school‐based daily physical activity intervention on a clustered CVD risk factor score—The Sogndal school‐intervention study
Author(s) -
Resaland G. K.,
Aadland E.,
Nilsen A. K. O.,
Bartholomew J. B.,
Andersen L. B.,
Anderssen S. A.
Publication year - 2018
Publication title -
scandinavian journal of medicine and science in sports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.575
H-Index - 115
eISSN - 1600-0838
pISSN - 0905-7188
DOI - 10.1111/sms.12955
Subject(s) - medicine , waist , triglyceride , blood pressure , physical therapy , vo2 max , cardiorespiratory fitness , insulin resistance , high density lipoprotein , cholesterol , body mass index , obesity , heart rate
To evaluate changes in clustered cardiovascular disease ( CVD ) risk factors in 9‐year‐old children following a 2‐year school‐based physical activity intervention. In total, 259 children (age 9.3 ± 0.3 years) were invited, of whom 256 participated. The intervention group (63 boys, 62 girls) carried out 60‐minute teacher‐controlled daily physical activity over two school years. The control group (62 boys, 69 girls) had the curriculum‐defined amount of physical education (45 minutes twice each week). Of these, 67% (171 total, 91 intervention) successfully completed both baseline and post‐intervention of six CVD risk factors: systolic blood pressure ( SBP ), triglyceride ( TG ), total cholesterol‐to‐high‐density lipoprotein cholesterol ratio ( TC : HDL ratio), waist circumference ( WC ), the homeostasis model assessment for insulin resistance ( HOMA ), and peak oxygen uptake ( VO 2peak ). All variables were standardized by sex prior to constructing a cluster score (sum of z scores for all variables). The effect of the intervention on the cluster score was analyzed using linear multiple regression. The cluster score improved after the intervention ( ES = .29). Furthermore, the analyses showed significant effects in favor of the intervention group for systolic blood pressure ( ES = .35), total cholesterol‐to‐ HDL ‐c ratio ( ES = .23), triglyceride ( ES = .40), and VO 2peak ( ES = .57). A teacher‐led school‐based physical activity intervention that is sufficiently long and includes a substantial amount of daily physical activity can beneficially modify children's clustered CVD risk profile.