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A 3-year school-based exercise intervention improves muscle strength - a prospective controlled population-based study in 223 children

Detter, Fredrik LU ; Nilsson, Jan-Åke LU ; Karlsson, Caroline LU ; Dencker, Magnus; Rosengren, Björn LU and Karlsson, Magnus LU (2014) In BMC Musculoskeletal Disorders 15.
Abstract
Background: Intense physical activity (PA) improves muscle strength in children, but it remains uncertain whether moderately intense PA in a population-based cohort of children confers these benefits. Methods: We included children aged 6-9 years in four schools where the intervention school increased the school curriculum of PA from 60 minutes/week to 40 minutes/school day while the control schools continued with 60 minutes/week for three years. We measured muscle strength, as isokinetic Peak Torque (PT) (Nm) of the knee flexors in the right leg at speeds of 60 degrees/second and 180 degrees/second, at baseline and at follow-up, in 47 girls and 76 boys in the intervention group and 46 girls and 54 boys in the control group and then... (More)
Background: Intense physical activity (PA) improves muscle strength in children, but it remains uncertain whether moderately intense PA in a population-based cohort of children confers these benefits. Methods: We included children aged 6-9 years in four schools where the intervention school increased the school curriculum of PA from 60 minutes/week to 40 minutes/school day while the control schools continued with 60 minutes/week for three years. We measured muscle strength, as isokinetic Peak Torque (PT) (Nm) of the knee flexors in the right leg at speeds of 60 degrees/second and 180 degrees/second, at baseline and at follow-up, in 47 girls and 76 boys in the intervention group and 46 girls and 54 boys in the control group and then calculated annual changes in muscle strength. Data are provided as means with 95% confidence intervals. Results: Girls in the intervention group had 1.0 Nm (0.13, 1.9) and boys 1.9 Nm (0.9, 2.9) greater annual gain in knee flexor PT at 60 degrees/second, than girls and boys in the control group. Boys in the intervention group also had 1.5 Nm (0.5, 2.5) greater annual gain in knee flexors PT at 180 degrees/second than boys in the control group. Conclusion: A 3-year moderately intense PA intervention program within the school curriculum enhances muscle strength in both girls and boys. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Body composition, Boys, Isokinetic peak torque, Girls, Knee extension, Knee flexion, Muscle strength, Physical activity, School-based, intervention
in
BMC Musculoskeletal Disorders
volume
15
publisher
BioMed Central
external identifiers
  • wos:000346448000001
  • scopus:84932189108
ISSN
1471-2474
DOI
10.1186/1471-2474-15-353
language
English
LU publication?
yes
id
336b37ee-06b1-4080-8514-9c9ed739e6e0 (old id 4947673)
date added to LUP
2015-02-03 07:05:57
date last changed
2017-01-01 05:51:23
@article{336b37ee-06b1-4080-8514-9c9ed739e6e0,
  abstract     = {Background: Intense physical activity (PA) improves muscle strength in children, but it remains uncertain whether moderately intense PA in a population-based cohort of children confers these benefits. Methods: We included children aged 6-9 years in four schools where the intervention school increased the school curriculum of PA from 60 minutes/week to 40 minutes/school day while the control schools continued with 60 minutes/week for three years. We measured muscle strength, as isokinetic Peak Torque (PT) (Nm) of the knee flexors in the right leg at speeds of 60 degrees/second and 180 degrees/second, at baseline and at follow-up, in 47 girls and 76 boys in the intervention group and 46 girls and 54 boys in the control group and then calculated annual changes in muscle strength. Data are provided as means with 95% confidence intervals. Results: Girls in the intervention group had 1.0 Nm (0.13, 1.9) and boys 1.9 Nm (0.9, 2.9) greater annual gain in knee flexor PT at 60 degrees/second, than girls and boys in the control group. Boys in the intervention group also had 1.5 Nm (0.5, 2.5) greater annual gain in knee flexors PT at 180 degrees/second than boys in the control group. Conclusion: A 3-year moderately intense PA intervention program within the school curriculum enhances muscle strength in both girls and boys.},
  articleno    = {353},
  author       = {Detter, Fredrik and Nilsson, Jan-Åke and Karlsson, Caroline and Dencker, Magnus and Rosengren, Björn and Karlsson, Magnus},
  issn         = {1471-2474},
  keyword      = {Body composition,Boys,Isokinetic peak torque,Girls,Knee extension,Knee flexion,Muscle strength,Physical activity,School-based,intervention},
  language     = {eng},
  publisher    = {BioMed Central},
  series       = {BMC Musculoskeletal Disorders},
  title        = {A 3-year school-based exercise intervention improves muscle strength - a prospective controlled population-based study in 223 children},
  url          = {http://dx.doi.org/10.1186/1471-2474-15-353},
  volume       = {15},
  year         = {2014},
}