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The Effects of Exercise for the Prevention of Overuse Anterior Knee Pain: A Randomized Controlled Trial.
- Source :
-
American Journal of Sports Medicine . 05/01/2011, Vol. 39 Issue 5, p940-948. 9p. - Publication Year :
- 2011
-
Abstract
- Background: Anterior knee pain (AKP) is the most common activity-related injury of the knee. The authors investigated the effect of an exercise intervention on the incidence of AKP in UK army recruits undergoing a 14-week physically arduous training program.Hypothesis: Modifying military training to include targeted preventative exercises may reduce the incidence of AKP in a young recruit population.Study Design: Randomized controlled trial; Level of evidence, 1.Methods: A single-blind cluster randomized controlled trial was performed in 39 male and 11 female training groups (median age: 19.7 years; interquartile range, 17-25) undergoing phase 1 of army recruit training. Each group was randomly assigned to either an intervention (n = 759) or control (n = 743) protocol. The intervention consisted of 4 strengthening and 4 stretching exercises completed during supervised physical training lessons (7 per week). The control group followed the existing training syllabus warm-up exercises. The primary outcome was a diagnosis of AKP during the 14-week training program.Results: Forty-six participants (3.1%; 95% confidence interval [CI], 2.3-4.1) were diagnosed with AKP. There were 36 (4.8%; 95%CI, 3.5-6.7) new cases of AKP in the control group and 10 (1.3%; 0.7-2.4) in the intervention group. There was a 75% reduction in AKP risk in the intervention group (unadjusted hazard ratio = 0.25; 95% CI, 0.13-0.52; P < .001). Three participants (0.4%) from the intervention group were discharged from the military for medical reasons compared to 25 (3.4%) in the control group.Conclusion: A simple set of lower limb stretching and strengthening exercises resulted in a substantial and safe reduction in the incidence of AKP in a young military population undertaking a physical conditioning program. Such exercises could also be beneficial for preventing this common injury among nonmilitary participants in recreational physical activity. [ABSTRACT FROM AUTHOR]
- Subjects :
- *ANALYSIS of variance
*ANTHROPOMETRY
*CHI-squared test
*COMPUTER software
*CONFIDENCE intervals
*EPIDEMIOLOGY
*EXERCISE
*EXERCISE physiology
*EXERCISE therapy
*KNEE
*LONGITUDINAL method
*MILITARY education
*MUSCLE strength
*OVERUSE injuries
*PAIN
*POISSON distribution
*STATISTICAL sampling
*MILITARY personnel
*STRETCH (Physiology)
*SURVIVAL analysis (Biometry)
*NEW employees
*STATISTICAL power analysis
*DATA analysis
*BODY mass index
*PRE-tests & post-tests
*PROPORTIONAL hazards models
*BLIND experiment
Subjects
Details
- Language :
- English
- ISSN :
- 03635465
- Volume :
- 39
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- American Journal of Sports Medicine
- Publication Type :
- Academic Journal
- Accession number :
- 60516924
- Full Text :
- https://doi.org/10.1177/0363546510393269