Prevention Programs: Hip Angle Behaviour in Landing after Drop Jump in Children | Chapter 14 | Issues and Developments in Medicine and Medical Research Vol. 7

 Background: Although the anterior cruciate ligament (ACL) damage is uncommon, it accounts for a significant percentage of sports-related injuries needing more than 8 weeks of recuperation. Most ACL injuries are caused by biomechanical risk factors such as increased knee valgus angle (KV) and hip flexion (HF) and decreased knee flexion (KF). The ACL relies on muscular cooperation to resist the stress; however, as the musculature becomes fatigued, its protective capacity decreases.The study's goal is to examine the angular behaviour of children aged 14-15 years old before and after a physical load for HF.Hypothesis: A single training session's physical stress is sufficient to alter some biomechanical risk variables for ACL damage.The study was designed as an experiment.Evidence Level: 2b.The sample consisted of 50 students aged 14 to 15 years old from various soccer schools. Before and after a training session, we looked at the hip angular behaviour of hip flexion. The angles were measured using an inertial sensor as the students did a Drop Jump test from a 30 cm drawer.

Results: The differences between pre physical load HF / post-load HF (p = 0.00053), right prior physical load HF / right post-load HF (p = 0.0086), and left post-load (p = 0.0248206) were statistically significant.

Conclusions: After completing a physical load, the angular behaviour of HF increases significantly in both post-training limbs.

Clinical Importance: This study looked at the importance of implementing injury prevention programmes from the start, emphasising the eccentric role of hamstring, gluteus, and core movements.

Author(S) Details

G. Jair Burboa
Universidad Metropolitana de Ciencias de la Educación, Chile.

F. Matias Bahamondes
Universidad Metropolitana de Ciencias de la Educación, Chile.

M. Mauricio Inostroza
Universidad Metropolitana de Ciencias de la Educación, Chile.

U. Paloma Lillo
Universidad Metropolitana de Ciencias de la Educación, Chile.

Jaime Hinzpeter
University of Chile, Clinical Hospital, Santiago, Chile.

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