Effect of school based physical activity programme (KISS) on fitness and adiposity in primary schoolchildren: cluster randomised controlled trial

Susi Kriemler*, Lukas Zahner, Christian Schindler, Ursina Meyer, Tim Hartmann, Helge Hebestreit, Hans Peter Brunner-La Rocca, Willem van Mechelen, Jardena J. Puder

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

305 Citations (Web of Science)

Abstract

To assess the effectiveness of a school based physical activity programme during one school year on physical and psychological health in young schoolchildren.Cluster randomised controlled trial.28 classes from 15 elementary schools in Switzerland randomly selected and assigned in a 4:3 ratio to an intervention (n=16) or control arm (n=12) after stratification for grade (first and fifth grade), from August 2005 to June 2006.540 children, of whom 502 consented and presented at baseline.Children in the intervention arm (n=297) received a multi-component physical activity programme that included structuring the three existing physical education lessons each week and adding two additional lessons a week, daily short activity breaks, and physical activity homework. Children (n=205) and parents in the control group were not informed of an intervention group. For most outcome measures, the assessors were blinded.Primary outcome measures included body fat (sum of four skinfolds), aerobic fitness (shuttle run test), physical activity (accelerometry), and quality of life (questionnaires). Secondary outcome measures included body mass index and cardiovascular risk score (average z score of waist circumference, mean blood pressure, blood glucose, inverted high density lipoprotein cholesterol, and triglycerides).498 children completed the baseline and follow-up assessments (mean age 6.9 (SD 0.3) years for first grade, 11.1 (0.5) years for fifth grade). After adjustment for grade, sex, baseline values, and clustering within classes, children in the intervention arm compared with controls showed more negative changes in the z score of the sum of four skinfolds (-0.12, 95 % confidence interval -0.21 to -0.03; P=0.009). Likewise, their z scores for aerobic fitness increased more favourably (0.17, 0.01 to 0.32; P=0.04), as did those for moderate-vigorous physical activity in school (1.19, 0.78 to 1.60; P
Original languageEnglish
Pages (from-to)8
JournalBMJ (e)
Volume340
DOIs
Publication statusPublished - 23 Feb 2010

Cite this