Chapter 2 - Movement Anaylsis Flashcards Preview

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Flashcards in Chapter 2 - Movement Anaylsis Deck (33):
1

Lever

A rigid bar that turns about an axis to create movement.

2

What do all levers contain

Fulcrum, load, effort

3

Fulcrum

The fixed point at which a lever turns or is supported. It can also be referred to as the axis

4

Load

The weight or resistance that the lever must move

5

Effort

The force required to move the load. It can be referred to as the force.

6

Load arm

The distance from the load to the fulcrum

7

Effort arm

The distance from the effort to the fulcrum

8

Mechanical advantage

-Measures efficiency of a lever
-high advantage = longer effort arm, move large loads with low effort

9

How is the mechanical advantage calculated

Effort arm/load arm

10

FLE

123

11

First class levers

-Fulcrum in the middle
-quite close to both effort and the load

12

Second class lever

-load in the middle
-large load moved with low effort

13

Third class lever

-effort in the middle
-large range of movement with low effort
-Low mechanical advantage
-longer load arm

14

Flexion

Angle of the bones at a joint decreases

15

Where can flexion occur

Shoulder, hip, elbow, knee

16

Extension

When the angle of the bones at a joint increase

17

Where does extension take place

Shoulder, elbow, knee, hip

18

Abduction

The movement of a limb away from the midline of the body.

19

Where does abduction take place

Shoulders and hip

20

Adduction

When the limb towards the midline of the body.

21

Where can adduction take place

Hips and shoulder

22

Dorsiflexion

Takes place at the ankle joint when the foot flexes upwards

23

Plantar flexion

Takes places at the ankle joint when the foot flexes downwards

24

Rotation

Circular motion where part of the body turns while the rest remains still.

25

Where can rotation occur

Hips and shoulders

26

Axis

An imaginary line through the body around which it rotates. Three types, Sagittal, transverse, longitudinal

27

Plane

An imaginary line that splits the body in two and depicts the direction of movement. Three types, frontal, transverse, Sagittal

28

Frontal plane

-Runs left to right
-Divides body into front and back halves
-Works with the sagittal axis

29

Sagittal axis

-runs horizontally through the body from front to back through belly button
-allows abduction and adduction
-works with the frontal plane

30

Transverse plane

-divides body in half horizontally
-works with the longitudinal axis

31

Longitudinal axis

-runs vertically through the body, from head to toe
-allows rotation in an upright position
-works with transverse plane

32

Sagittal plane

-runs forwards to backwards
-divides body into left and right halves
-works with the transverse axis

33

Transverse axis

-runs horizontally through body
-from left to right at hips
-allowing flexion, extension
-works with sagittal plane