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Bottom-Up Kinetic Chain in Drop Landing among University Athletes with Normal Dynamic Knee Valgus
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°)...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7344677/ https://www.ncbi.nlm.nih.gov/pubmed/32575511 http://dx.doi.org/10.3390/ijerph17124418 |
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author | Jamaludin, Nazatul Izzati Sahabuddin, Farhah Nadhirah Aiman Raja Ahmad Najib, Raja Khairul Mustaqim Shamshul Bahari, Muhamad Lutfi Hanif Shaharudin, Shazlin |
author_facet | Jamaludin, Nazatul Izzati Sahabuddin, Farhah Nadhirah Aiman Raja Ahmad Najib, Raja Khairul Mustaqim Shamshul Bahari, Muhamad Lutfi Hanif Shaharudin, Shazlin |
author_sort | Jamaludin, Nazatul Izzati |
collection | PubMed |
description | 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 = −0.50, p = 0.03; 45 cm: r = −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. |
format | Online Article Text |
id | pubmed-7344677 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-73446772020-07-09 Bottom-Up Kinetic Chain in Drop Landing among University Athletes with Normal Dynamic Knee Valgus Jamaludin, Nazatul Izzati Sahabuddin, Farhah Nadhirah Aiman Raja Ahmad Najib, Raja Khairul Mustaqim Shamshul Bahari, Muhamad Lutfi Hanif Shaharudin, Shazlin Int J Environ Res Public Health Article 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 = −0.50, p = 0.03; 45 cm: r = −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. MDPI 2020-06-19 2020-06 /pmc/articles/PMC7344677/ /pubmed/32575511 http://dx.doi.org/10.3390/ijerph17124418 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Jamaludin, Nazatul Izzati Sahabuddin, Farhah Nadhirah Aiman Raja Ahmad Najib, Raja Khairul Mustaqim Shamshul Bahari, Muhamad Lutfi Hanif Shaharudin, Shazlin Bottom-Up Kinetic Chain in Drop Landing among University Athletes with Normal Dynamic Knee Valgus |
title | Bottom-Up Kinetic Chain in Drop Landing among University Athletes with Normal Dynamic Knee Valgus |
title_full | Bottom-Up Kinetic Chain in Drop Landing among University Athletes with Normal Dynamic Knee Valgus |
title_fullStr | Bottom-Up Kinetic Chain in Drop Landing among University Athletes with Normal Dynamic Knee Valgus |
title_full_unstemmed | Bottom-Up Kinetic Chain in Drop Landing among University Athletes with Normal Dynamic Knee Valgus |
title_short | Bottom-Up Kinetic Chain in Drop Landing among University Athletes with Normal Dynamic Knee Valgus |
title_sort | bottom-up kinetic chain in drop landing among university athletes with normal dynamic knee valgus |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7344677/ https://www.ncbi.nlm.nih.gov/pubmed/32575511 http://dx.doi.org/10.3390/ijerph17124418 |
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