elbow extensors
What plane and axis does elbow extension occur in?
the sagittal plane and medial/lateral axis.
What is the prime mover of knee extension? And what is the antagonist of knee extension?
Prim mover: quadriceps femoris group
Antagonist: hamstrings group
Prim mover for extension of the spine?
erector spinae
Prim movers of shoulder extension
- Latissimus Dorsi
- Teres Major
- Posterior Deltoid
How many DOF are at the hip joint. What axis does hip extension rotate around?
DOF: 3
Axis: Medial Lateral
What muscles are the prime movers of elbow extension, and what muscle is its synergist.
prime mover: triceps
synergist: anconeus
Nomentaure rule of knee extension?
The distance between the anterior surface of the distal tibia and the anterior surface of the proximal femur decreases.
Nomentacture rule for spine extension?
The distance between the anterior surface of the superior vertebra and the anterior surface of the inferior vertebra increases.
What is the nomenclator rule for the shoulder extension?
The distance between the anterior surface of the distal humerus and the anterior surface of the glenoid fossa increases.
Prim mover of hip extension, and the primary angionist of hip extension.
Prim mover: gultus maximus
Angionist: illiosoas
LOF location relative to the medial-lateral axis of rotation.
Posterior
How to maximaly streach all muscle of the quadriceps femoris group.
hip extension, knee flexion, posterior plevis tilt
When someone goes into anterior pelvic tilt, what action at the lumbar spine and hip occur?
Lumbar spine: extension
Hip: flexion
What is the direction of LOF when the shoulder extensors are performing an open-chain exercise?
posterior/inferior
Nomentaure rule of hip extension?
The distance between the anterior surface of the distal femur and the anterior surface of the acatabulum increases.
During the up phase of a push-up, what contraction do the triceps perform? Is a push-up a closed-chain or open-chain exercise?
Contraction: concentric
Closed-chain
LOF location for the knee extensors
What is the location of the LOF for the spine extensors?
Posterior
What is the location of shoulder extensors LOF?
posterior
LOF location relative to the medial-lateral axis of rotation.
posterior
Start: The Elbow is flexed at 90.
End: Arms and hands drop.
What force caused the arms to drop?
An external force of gravity
What is the direction of the LOF of the knee extensors during a squat?
Superior
What is the direction of the LOF of the spine extensors during a closed-chain exercise?
Inferior
During the down phase of a lat pull-down, what torque is being produced at the shoulder joint by internal and external forces?
internal: extension torque
external: flexion torque
How to maximally stretch all hip extensors?
hip flexion, posterior pelvic tilit, knee extension, internal hip rotation