Neuromuscular activity during stair descent in ACL reconstructed patients: A pilot study

The anterior cruciate ligament (ACL) rupture is a severe knee injury. Altered kinematics and kinetics in ACL reconstructed (ACL-R) patients compared to healthy participants (ACL-I) are known and attributed to an altered sensorimotor control. However, studies on neuromuscular control often lack homog...

Full description

Saved in:
Bibliographic Details
Published in:The knee 2019-03, Vol.26 (2), p.310-316
Main Authors: Busch, Aglaja, Blasimann, Angela, Henle, Philipp, Baur, Heiner
Format: Article
Language:English
Subjects:
Activities of daily living
Alcohol
Anterior cruciate ligament
Arthritis
Electrodes
Electromyography
Fitness equipment
Gender
Kinematics
Knee
Kruskal-Wallis test
Leg
Neuromuscular control
Neuromuscular system
Pain
Rehabilitation
Sensorimotor control
Sensorimotor system
Sports injuries
Studies
Surgery
Systematic review
Walking
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The anterior cruciate ligament (ACL) rupture is a severe knee injury. Altered kinematics and kinetics in ACL reconstructed (ACL-R) patients compared to healthy participants (ACL-I) are known and attributed to an altered sensorimotor control. However, studies on neuromuscular control often lack homogeneous patient cohorts. The objective was to examine neuromuscular activity during stair descent in patients one year after ACL reconstruction. Neuromuscular activity of vastus medialis (VM) and lateralis (VL), biceps femoris (BF) and semitendinosus (ST) was recorded by electromyography in 10 ACL-R (age: 26  ±  10   years; height: 175  ±  6  cm; mass: 75  ±  14   kg) and 10 healthy matched controls (age: 31  ±  7  years; height: 175  ±  7  cm; mass: 68  ±  10  kg). A 10-minute walking treadmill warm-up was used for submaximal normalization. Afterwards participants descended 10 times a six-step stairway at a self-selected speed. The movement was separated into pre-activation (PRE), weight acceptance (WA) and push-off phase (PO). Normalized root mean squares for each muscle, limb and movement phase were calculated. Kruskal-Wallis ANOVA compared ACL-R injured and contralateral leg and the ACL-I leg (α  =  0.05). Significant increased normalised activity in ST during WA in ACL-R injured leg compared to ACL-I and during PO in VL in the ACL-R contralateral leg compared to ACL-I. Decreased activity was shown in VM in ACL-R injured compared to contralateral leg (p 
ISSN:0968-0160
1873-5800
DOI:10.1016/j.knee.2018.12.011