High-level physical activity in childhood seems to protect against low back pain in early adolescence
Received 11 September 2007; accepted 1 February 2008. published online 21 May 2008.
Abstract
Background
The evidence on the impact of physical activity on back pain in children and adolescents has been contradicting. It has also been shown that the physical activity cannot accurately be estimated in children using questionnaires.
Purpose
The aim of this study was to establish if physical activity in childhood had any impact on back pain reporting in early adolescence (3 years later), using an objective instrumental measurement of physical activity.
Study design
Prospective cohort study.
Patient sample
Representative random sample of Danish children from the city of Odense sampled at age 9 years and followed-up at age 12 years.
Outcome measures
The 1-month period prevalence of back pain (neck pain, mid back pain, and low back pain) was established using a structured interview.
Methods
Physical activity was assessed with the MTI-accelerometer. The accelerometer provides a minute-by-minute measure of the physical activity performed. An overall measure of physical activity and time spent in high activity were studied in relation to back pain using logistic regression. The analyses were performed on the total sample and then stratified on back pain (yes/no) at baseline.
Results
High physical activity (HPA) levels seem to protect against future low back pain and appear to actually “treat” and reduce the odds of future mid back pain. When comparing the least active children to the most active children, the least active had a multivariate odds ratio of 3.3 of getting low back pain and 2.7 of getting mid back pain 3 years later. When stratified on back pain at baseline, this effect on mid back pain was especially noticeable in children who had had mid back pain already at baseline, with an odds ratio of 7.2.
Conclusions
HPA in childhood seems to protect against low back pain and mid back pain in early adolescence. Larger prospective studies with repetitive follow-ups and preferably intervention studies should be performed, to see if these findings can be reproduced.
aThe Back Research Center, Hospital of Funen, Part of Clinical Locomotion Science, University of Southern Denmark, Lindevej 5, DK-5750, Ringe, Denmark
bInstitute of Statistics, University of Southern Denmark, Lindevej 5, DK-5750, Ringe, Denmark
Corresponding author. Back Research Center, Hospital of Funen, Part of Clinical Locomotion Science, University of Southern Denmark, Lindevej 5, DK-5750, Ringe, Denmark. Tel.: (+45) 63-62-18-60.
The authors do not have a financial relationship that creates; or may be perceived as creating, a conflict related to this article.
ABSTRACT