1.4 Musculoskeletal System And Movement Analysis Flashcards
What are the 2 types of joints?
- Ball and socket - allows movement in every direction
- Hinge - only allows movement in one direction
Define flexsion
Decreasing the angle between the bones of a joint
Define extension
Increasing the angle between the bones of a joint
Joint actions in sagittal planes and transverse axis
- flexion, extension, hyper extension
Joint actions in frontal planes and sagittal axis
- adduction, abduction
Joint actions in transverse planes and longitudinal axis
- horizontal adduction, horizontal abduction
Sporting example of ST
Forward role
Sporting example of FS
Cartwheel
Sporting example of TL
Spin/log roll
Definition of agonist
The muscle responsible for the movement that’s occurring
Definition of antagonist
The muscle that works in opposition to the agonist to help produce a co-ordinated movement
What are isotonic contractions?
When a muscle contracts to create movement, there are 2 types
What are concentric contractions?
When a muscle shortens under tension
What are eccentric contractions?
When a muscle lengthens under tension or performs negative work and acts as a brake
What are isometric contractions?
When a muscle is under tension but there is no visible movement, eg: crucifix
