Knee joint motion and muscle activation patterns are altered during gait in individuals with moderate hip osteoarthritis compared to asymptomatic cohort

2015 ◽  
Vol 30 (6) ◽  
pp. 578-584 ◽  
Author(s):  
Derek Rutherford ◽  
Janice Moreside ◽  
Ivan Wong
Keyword(s):  
Knee Joint ◽  
Muscle Activation ◽  
Hip Osteoarthritis ◽  
Joint Motion ◽  
Activation Patterns ◽  
Muscle Activation Patterns ◽  
Knee Joint Motion

A Computational Model of Muscle Recruitment for Wrist Movements

2002 ◽  
Vol 88 (6) ◽  
pp. 3348-3358 ◽  
Author(s):  
Andrew H. Fagg ◽  
Ashvin Shah ◽  
Andrew G. Barto
Keyword(s):  
Motor System ◽  
Muscle Activation ◽  
Movement Direction ◽  
Joint Motion ◽  
Muscle Recruitment ◽  
Task Constraints ◽  
Activation Patterns ◽  
Muscle Activation Patterns ◽  
Recruitment Behavior ◽  
Total Effort

To execute a movement, the CNS must appropriately select and activate the set of muscles that will produce the desired movement. This problem is particularly difficult because a variety of muscle subsets can usually be used to produce the same joint motion. The motor system is therefore faced with a motor redundancy problem that must be resolved to produce the movement. In this paper, we present a model of muscle recruitment in the wrist step-tracking task. Muscle activation levels for five muscles are selected so as to satisfy task constraints (moving to the designated target) while also minimizing a measure of the total effort in producing the movement. Imposing these constraints yields muscle activation patterns qualitatively similar to those observed experimentally. In particular, the model reproduces the observed cosine-like recruitment of muscles as a function of movement direction and also appropriately predicts that certain muscles will be recruited most strongly in movement directions that differ significantly from their direction of action. These results suggest that the observed recruitment behavior may not be an explicit strategy employed by the nervous system, but instead may result from a process of movement optimization.

scholarly journals Muscle activation patterns during sit-to- standsfollowing knee joint replacement

2017 ◽  
Vol 25 ◽  
pp. S138-S139
Author(s):  
M. Okawa ◽  
T. Kobayashi ◽  
T. Kannari ◽  
H. Horiuchi ◽  
N. Matsui ◽  
...  
Keyword(s):  
Knee Joint ◽  
Joint Replacement ◽  
Muscle Activation ◽  
Activation Patterns ◽  
Knee Joint Replacement ◽  
Muscle Activation Patterns

Knee motion and muscle activation patterns are altered in hip osteoarthritis: The effect of severity on walking mechanics

2018 ◽  
Vol 59 ◽  
pp. 1-7 ◽  
Author(s):  
Derek Rutherford ◽  
Lindsey Buckingham ◽  
Janice Moreside ◽  
Ivan Wong ◽  
Glen Richardson
Keyword(s):  
Muscle Activation ◽  
Hip Osteoarthritis ◽  
Knee Motion ◽  
Activation Patterns ◽  
Muscle Activation Patterns

scholarly journals Muscle activation patterns following knee joint replacement during the postural control task

2014 ◽  
Vol 22 ◽  
pp. S107
Author(s):  
T. Kobayashi ◽  
M. Yamanaka ◽  
T. Kannari ◽  
H. Horiuchi ◽  
N. Matsui ◽  
...  
Keyword(s):  
Knee Joint ◽  
Postural Control ◽  
Joint Replacement ◽  
Muscle Activation ◽  
Control Task ◽  
Activation Patterns ◽  
Knee Joint Replacement ◽  
Muscle Activation Patterns
Sign in / Sign up

Export Citation Format

Share Document