Is knee neuromuscular activity related to anterior cruciate ligament injury risk? A pilot study.
Adolescent
Adult
Anterior Cruciate Ligament Injuries
/ etiology
Athletes
Biomechanical Phenomena
Electromyography
Female
Humans
Knee Injuries
/ etiology
Knee Joint
/ physiology
Movement
/ physiology
Muscle Strength
/ physiology
Muscle, Skeletal
/ physiopathology
Pilot Projects
Prospective Studies
Range of Motion, Articular
/ physiology
Young Adult
ACL injury
Drop vertical jump
Electromyography
Injury prevention
Neuromuscular activation
Risk factor
Journal
The Knee
ISSN: 1873-5800
Titre abrégé: Knee
Pays: Netherlands
ID NLM: 9430798
Informations de publication
Date de publication:
Jan 2019
Jan 2019
Historique:
received:
22
02
2018
revised:
17
07
2018
accepted:
11
10
2018
pubmed:
13
11
2018
medline:
9
4
2019
entrez:
13
11
2018
Statut:
ppublish
Résumé
There is limited evidence on neuromuscular risk factors for anterior cruciate ligament (ACL) injuries, with most work mainly focusing on hamstrings and quadriceps muscle strength. This prospective pilot study explored if neuromuscular activation patterns of the quadriceps and hamstrings during a drop vertical jump influence ACL injury risk. Forty-six female athletes performed a drop vertical jump at baseline. Injuries were monitored throughout a one-year follow-up. Neuromuscular activation patterns of the vastus medialis, vastus lateralis, hamstrings medialis and hamstrings lateralis, and selected landing kinematic and kinetic profiles (knee flexion, knee abduction and hip flexion angles, and knee abduction moments), were compared between athletes who sustained a non-contact ACL injury and those who remained injury free. Electromyogram vector fields were created to represent neuromuscular activation patterns of muscle pairs around the knee joint rather than only considering individual muscle activations, and compared using Statistical Parametric Mapping. Four athletes sustained an ACL injury. Significantly greater {hamstrings medials, hamstrings lateralis}, {vastus lateralis, hamstrings lateralis} and {hamstrings lateralis, vastus medialis} activations, mainly due to greater hamstrings lateralis activation, were found in the injured group around peak loading and just before take-off (P < 0.001). No group differences were found in knee flexion, knee abduction and hip flexion angles, or knee abduction moments. This pilot study revealed initial evidence that athletes already showed altered neuromuscular activation patterns prior to sustaining an ACL injury, namely increased lateral and posterior muscle activations.
Sections du résumé
BACKGROUND
BACKGROUND
There is limited evidence on neuromuscular risk factors for anterior cruciate ligament (ACL) injuries, with most work mainly focusing on hamstrings and quadriceps muscle strength. This prospective pilot study explored if neuromuscular activation patterns of the quadriceps and hamstrings during a drop vertical jump influence ACL injury risk.
METHODS
METHODS
Forty-six female athletes performed a drop vertical jump at baseline. Injuries were monitored throughout a one-year follow-up. Neuromuscular activation patterns of the vastus medialis, vastus lateralis, hamstrings medialis and hamstrings lateralis, and selected landing kinematic and kinetic profiles (knee flexion, knee abduction and hip flexion angles, and knee abduction moments), were compared between athletes who sustained a non-contact ACL injury and those who remained injury free. Electromyogram vector fields were created to represent neuromuscular activation patterns of muscle pairs around the knee joint rather than only considering individual muscle activations, and compared using Statistical Parametric Mapping.
RESULTS
RESULTS
Four athletes sustained an ACL injury. Significantly greater {hamstrings medials, hamstrings lateralis}, {vastus lateralis, hamstrings lateralis} and {hamstrings lateralis, vastus medialis} activations, mainly due to greater hamstrings lateralis activation, were found in the injured group around peak loading and just before take-off (P < 0.001). No group differences were found in knee flexion, knee abduction and hip flexion angles, or knee abduction moments.
CONCLUSIONS
CONCLUSIONS
This pilot study revealed initial evidence that athletes already showed altered neuromuscular activation patterns prior to sustaining an ACL injury, namely increased lateral and posterior muscle activations.
Identifiants
pubmed: 30415973
pii: S0968-0160(18)30903-7
doi: 10.1016/j.knee.2018.10.006
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
40-51Informations de copyright
Copyright © 2018 Elsevier B.V. All rights reserved.