Associations between isometric quadriceps strength characteristics, knee flexion angles, and knee extension moments during single leg step down and landing tasks after anterior cruciate ligament reconstruction.
Activities of Daily Living
Adolescent
Adult
Anterior Cruciate Ligament Injuries
/ surgery
Anterior Cruciate Ligament Reconstruction
Biomechanical Phenomena
Cross-Sectional Studies
Exercise
Female
Humans
Isometric Contraction
Knee Joint
/ surgery
Linear Models
Lower Extremity
/ surgery
Male
Movement
Quadriceps Muscle
/ surgery
Torque
Young Adult
ACLR
Biomechanics
Peak knee extension torque
Rate of torque development
Journal
Clinical biomechanics (Bristol, Avon)
ISSN: 1879-1271
Titre abrégé: Clin Biomech (Bristol, Avon)
Pays: England
ID NLM: 8611877
Informations de publication
Date de publication:
Dec 2019
Dec 2019
Historique:
received:
16
05
2019
revised:
31
07
2019
accepted:
15
10
2019
pubmed:
2
11
2019
medline:
4
9
2020
entrez:
1
11
2019
Statut:
ppublish
Résumé
It is unclear of how peak knee extension torque and early rate of torque development outcomes are related to lower extremity loading and sagittal plane movement in activities of daily living and landing tasks despite consistent deficits after anterior cruciate ligament reconstruction. The purpose of this cross-section study is to assess the ability of quadriceps strength characteristics to predict movement patterns during a step down and single leg drop crossover hopping tasks. Fifty-two individuals with a unilateral history of anterior cruciate ligament reconstruction completed three trials of the step down and crossover hopping tasks on their involved limb. Participants completed three isometric knee extension contractions at 90° knee flexion with visual feedback to assess peak knee extension torque and rate of torque development during the first 0-100 ms and 100-200 ms of the contraction. Peak knee extension torque explained the greatest variance in peak knee extension moment (R Peak knee extension torque and early rate of torque development outcomes demonstrate limited relationships between movement of activities of daily living and sport-specific tasks. These limitations should be considered when interpreting the results of isometric strength testing in a clinical setting.
Sections du résumé
BACKGROUND
BACKGROUND
It is unclear of how peak knee extension torque and early rate of torque development outcomes are related to lower extremity loading and sagittal plane movement in activities of daily living and landing tasks despite consistent deficits after anterior cruciate ligament reconstruction. The purpose of this cross-section study is to assess the ability of quadriceps strength characteristics to predict movement patterns during a step down and single leg drop crossover hopping tasks.
METHODS
METHODS
Fifty-two individuals with a unilateral history of anterior cruciate ligament reconstruction completed three trials of the step down and crossover hopping tasks on their involved limb. Participants completed three isometric knee extension contractions at 90° knee flexion with visual feedback to assess peak knee extension torque and rate of torque development during the first 0-100 ms and 100-200 ms of the contraction.
FINDINGS
RESULTS
Peak knee extension torque explained the greatest variance in peak knee extension moment (R
INTERPRETATION
CONCLUSIONS
Peak knee extension torque and early rate of torque development outcomes demonstrate limited relationships between movement of activities of daily living and sport-specific tasks. These limitations should be considered when interpreting the results of isometric strength testing in a clinical setting.
Identifiants
pubmed: 31669921
pii: S0268-0033(19)30370-5
doi: 10.1016/j.clinbiomech.2019.10.012
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
231-236Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.