Bottom-Up Kinetic Chain in Drop Landing among University Athletes with Normal Dynamic Knee Valgus
| Autor: | Muhamad Lutfi Hanif Shamshul Bahari, Shazlin Shaharudin, Raja Khairul Mustaqim Raja Ahmad Najib, Farhah Nadhirah Aiman Sahabuddin, Nazatul Izzati Jamaludin |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
musculoskeletal diseases
Male Kinematic chain Knee Joint injury prevention Health Toxicology and Mutagenesis lcsh:Medicine Knee kinematics Article biomechanics 03 medical and health sciences 0302 clinical medicine jump-landing medicine Humans Knee Range of Motion Articular Mathematics Orthodontics 030222 orthopedics biology Athletes lcsh:R Public Health Environmental and Occupational Health Biomechanics 030229 sport sciences musculoskeletal system biology.organism_classification collegiate athletes Valgus medicine.anatomical_structure Coronal plane Female Ankle Range of motion human activities Ankle Joint |
| Zdroj: | International Journal of Environmental Research and Public Health Volume 17 Issue 12 International Journal of Environmental Research and Public Health, Vol 17, Iss 4418, p 4418 (2020) |
| ISSN: | 1660-4601 |
| Popis: | The study investigated the influence of ankle strength and its range of motion (ROM) on knee kinematics during drop landing. Fifteen male and fifteen female university athletes with a normal range of dynamic knee valgus (DKV) (knee frontal plane projection angle: men = 3° to 8° females = 7° to 13° ) were recruited. They performed drop landing at height 30 cm and 45 cm with three-dimensional motion capture and analysis. Knee angles were compared at specific landing phases. Isokinetic ankle strength was tested at 60° /s angular velocity while the weight-bearing lunge test was conducted to evaluate ankle ROM. For males, strength for both plantarflexors and dorsiflexors were associated with knee kinematics at both heights (30 cm: r = &minus 0.50, p = 0.03 45 cm: r = &minus 0.45, p = 0.05) during maximum vertical ground reaction force (MVGRF) phase. For females, ankle invertor strength and knee kinematics were associated at both 30cm (r = 0.53 p = 0.02,) and 45 cm landing heights (r = 0.49, p = 0.03), while plantarflexor strength and knee kinematics showed a significant association during initial contact (r = 0.70, p < 0.01) and MVGRF (r = 0.55, p = 0.02) phases at height 30 cm only. Male and female athletes with normal range of DKV showed a significant relationship between ankle strength and knee kinematics at specific landing phases. These relationships varied with increased landing height. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|