Journal of Science and Medicine in Sport
Journal of Science and Medicine in Sport
4 years ago

Associations of age, aerobic fitness, and body mass index with injury in an operational Army brigade

To investigate the effects of age, aerobic fitness, and body mass index (BMI) on injury risk in operational Army soldiers. Design Retrospective cohort study. Methods Male soldiers from an operational Army brigade were administered electronic surveys regarding personal characteristics, physical fitness, and injuries occurring over the last 12 months. Injury risks were stratified by age, 2-mile run time, and BMI. Analyses included descriptive incidence, a Mantel–Haenszel χ2 test to determine trends, a multivariable logistic regression to determine factors associated with injury, and a one-way analysis of variance (ANOVA). Results Forty-seventy percent of 1099 respondents reported at least one injury. A linear trend showed that as age, 2-mile run time, and BMI increased, so did injury risk (p<0.01). When controlling for BMI, the most significant independent injury risk factors were older age (odd ratio (OR) 30years–35years/≤24years=1.25, 95%CI: 1.08–2.32), (OR≥36years/≤24years=2.05, 95%CI: 1.36–3.10), and slow run times (OR≥15.9min/≤13.9min=1.91, 95%CI: 1.28–2.85). An ANOVA showed that both run times and BMI increased with age. Conclusions The stratified analysis and the multivariable logistic regression suggested that older age and poor aerobic fitness are stronger predictors of injury than BMI.

Publisher URL: www.sciencedirect.com/science

DOI: S144024401730991X

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