Dose-response relationship between sports activity and musculoskeletal pain in adolescents.
Physical activity has multiple health benefits, but may also increase the risk of developing musculoskeletal pain. However, the relationship between physical activity and musculoskeletal pain has not been well-characterized. This study examined the dose-response relationship between sports activity and musculoskeletal pain among adolescents. Two school-based serial surveys were conducted 1 year apart in adolescents aged 12 to 18 years in Unnan, Japan. Self-administered questionnaires were completed by 2403 students. Associations between time spent in organized sports activity and musculoskeletal pain were analyzed cross-sectionally (n=2403) and longitudinally (n=374, students free of pain and in 7th or 10th grade at baseline) with repeated-measures Poisson regression and restricted cubic splines, with adjustment for potential confounders. The prevalence of overall pain, defined as having pain recently at least several times a week in at least one part of the body, was 27.4%. In the cross-sectional analysis, sports activity was significantly associated with pain prevalence. Each additional 1 hour/week of sports activity was associated with a 3% higher probability of having pain (prevalence ratio=1.03, 95% confidence interval (CI)=1.02-1.04). Similar trends were found across causes (traumatic and non-traumatic pain) and anatomic locations (upper limbs, lower back, and lower limbs). In longitudinal analysis, the risk ratio for developing pain at 1-year follow-up per 1 hour/week increase in baseline sports activity was 1.03 (95% CI=1.02-1.05). Spline models indicated a linear association (P<0.001) but not a non-linear association (P>=0.45). The more the adolescents played sports the more likely they were to have and develop pain.
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(C) 2016 International Association for the Study of Pain
Autor / Fonte:Masamitsu Kamada, Takafumi Abe, Jun Kitayuguchi, Fumiaki Imamura, I-Min Lee, Masaru Kadowaki, Susumu S Sawada, Motohiko Miyachi, Yuzuru Matsui, Yuji Uchio Pain 2016 February 17