Effect of Training Load on Knee Joint Stability in Athlete Soldiers of the Ninth Infantry Battalion, Honduras
Keywords:
training load; joint stability; knee; athlete soldiers; sports injuries; military medicine.Abstract
Knee joint stability is essential for physical performance and injury prevention in populations with high functional demands, such as soldier-athletes. This study analyzed the effect of training load on knee stability in 23 soldier-athletes from the Ninth Infantry Battalion of El Paraíso, Honduras, selected from a population of 89 personnel. Using a quantitative, observational, analytical, and cross-sectional design, stability was assessed with the Pivot Shift, valgus stress, anterior drawer, and posterior drawer tests, while training load was determined by weekly training frequency and hours, as well as years of sports experience. Data were analyzed using descriptive statistics, Shapiro-Wilk test, Spearman's correlation, chi-square, and Fisher's exact test (p < 0.05). Results showed that 43.5% of participants presented some degree of instability, with the anterior drawer test being the most frequently positive (21.7%). A significant association was found between training load and stability (χ² = 9.15; p = 0.010), as well as a high positive correlation between training hours and the number of positive tests (ρ = 0.656; p = 0.001). Soldier-athletes with high training load presented a significantly higher risk of instability (OR = 18.00; 95% CI: 1.63–198.52). It is concluded that training load exerts a significant effect on knee instability, increasing the risk of injury in this population.
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