Joint actions (agonists) Flashcards
Define agonist muscle
The muscle that is contracting is called the agonist
Define antagonist muscle
The muscle that is relaxing or lengthening is called the antagonist.
Define antagonistic muscle pairs
In an antagonistic muscle pair as one muscle contracts the other muscle relaxes or lengthens.
Movement analysis at the hip, knee, ankle of jumping upwards
Extension at the Hip
Plantar flexion at the Ankle
Extension at the Knee
Movement analysis at the hip, knee, ankle of kicking a ball in the preparation phase
Hyperextension at the Hip
Flexion at the Knee
Plantar flexion at the Ankle
Movement analysis at the hip, knee, ankle of kicking a ball in the striking phase
Flexion at the Hip
Extension at the Knee
Plantar flexion at the Ankle
Movement analysis at the shoulder and elbow of hitting/striking preparation phase eg. tennis serve
Horizontal hyperextension at the Shoulder
Extension at the Elbow
Movement analysis at the shoulder and elbow of hitting striking phase eg. tennis serve
Horizontal flexion at the Shoulder
Flexion at the Elbow
Movement analysis at the Hip, Knee and Ankle of the upwards phase of a squat
Concentric contractions
Extension at the Hip
Extension at the Knee
Plantar Flexion at the Ankle
Movement analysis at the Hip, Knee and Ankle of the downwards phase of a squat
Eccentric contractions
Flexion at the Hip
Flexion at the the Knee
Dorsiflexion at the Ankle
What is the rule for agonist muscles during upwards and downwards phases of muscle actions
The agonist on the downwards phaser is the same agonist for the upwards phase for each joint
Movement analysis at the Elbow and Shoulder of the upwards phase of a press up
Concentric contraction
Extension at the Elbow
Horizontal Flexion at the Shoulder
Movement analysis at the Elbow and Shoulder of the downwards phase of a press up
Eccentric contractions
Flexion at the Elbow
Horizontal extension at the Shoulder
