Paper Info
Title
Muscle Co-Activation Around The Knee During Different Walking Speeds In Healthy Females
Abstract
The purpose of this study was to examine the changes in co-activation around the knee joint during different walking speeds in healthy females using the co-activation index. Ten healthy females (age: 21.20 +/- 7.21 years, height: 164.00 +/- 4.00 cm, mass: 60.60 +/- 4.99 kg) participated in this study and performed three walking speeds (slow, normal, and fast). A Qualisys 11-camera motion analysis system sampling at a frequency of 200 Hz was synchronized with a Trigno EMG Wireless system operating at a 2000 Hz sampling frequency. A significant decrease in the co-activation index of thigh muscles was observed between the slow and fast, and between the normal and fast, walking speeds during all walking phases. A non-significant difference was observed between the slow and normal walking speeds during most walking phases, except the second double support phase, during which the difference was significant. A negative relationship was found between walking speed and the co-activation index of thigh muscles in all speeds during walking phases: first double support (r = -0.3386, p < 0.001), single support (r = -0.2144, p < 0.01), second double support (r = -0.4949, p < 0.001), and Swing (r = -0.1639, p < 0.05). In conclusion, the results indicated high variability of thigh muscle co-activation in healthy females during the different walking speeds, and a decrease in the co-activation of the thigh muscles with the increase of speed.
Year
DOI
Venue
2021
10.3390/s21030677
SENSORS
Keywords
DocType
Volume
biomechanics, agonist and antagonist muscle activation, knee, injury prevention, EMG
Journal
21
Issue
ISSN
Citations 
3
1424-8220
0
PageRank 
References 
Authors
0.34
0
6
Name
Order
Citations
PageRank
Abdel-Rahman Akl100.68
Pedro Goncalves2373.76
Pedro Fonseca300.34
Amr Hassan400.68
João Paulo Vilas-Boas500.34
Filipe Conceição600.34