Movement Analysis Flashcards
State the Three components of Any Lever System
Load/Effort, Resistance, Fulcrum/Pivot
Equation For Mechanical Advantage
Effort Arm/Resistance Arm
Joint action for a throw in (Football)
Extension
Main Agonist for a throw in (Football)
Triceps
Joint action at ankle for vertical Jump
Plantarflexion
What is Plantarflexion
Pointing Toes away from the body, e.g jumping
What is Dorsiflexion
Pointing Toes toward Shins.
Does the lever system operating at the ankle have a low or high mechanical advantage (2nd class)
The lever system has a high mechanical advantage due to effort being greater than resistance arm.
What bones is the shoulder joint made up of?
The humerus and the Scapula
Why can some Smaller people lift heavier weights than others when squatting?
As the resistance arm is longer in Taller people, meaning they can lift less heavy weights than shorter people whilst exerting the same force.
A third class lever system can move ________ with a ____ range of motion
A third class lever system can move Quickly with a large range of motion.
Name the three planes in which movement takes place
Frontal plane
Sagittal Plane
Transverse Plane
Identify the plane which splits the body into top and bottom halves
Transverse Plane
Which axis runs from front and back through a person’s belly button?
Sagittal Axis
Name the axis which movement at the knee occurs during the drive phase of running.
The Transverse Axis
Which lever system has the resistance in the middle
Second Class Lever System
State one advantage and one disadvantage of a second class lever system
ADV: High mechanical advantage
DisAdv: Limited Range of Movement
How does the skeletal system provide a framework for movement?
-Flat surfaces on bones are attached to muscles allowing them to contract.
-Joints allow bones to move in relation to each other.
What lever system is involved in a basketball free throw?
First class system
What is the role of the tendons in the body?
-Attaches muscle to bone
What is the role of ligaments?
Attaches bone to bone
How does cartilage reduce injury?
-Reduces friction between articulating bones
-Absorbs shock
-How does mineral storage in skeletons allow participation in sport?
-Minerals can be stored and released when concentrations are low to support bodily processes.
e.g. Calcium can be released to aid the process of muscular endurance.
What sport are isometric contractions important in?
-Rugby, scrumming involves isometric contraction of quadriceps.
-Important as it is needed to overcome resistance of opposing team to push them backwards and attempt to turn over the ball.
