Movement Analysis

Question 1

What is a lever system

Answer 1

Allows movement to take place, formed of bones, joints and muscles

Question 2

Three parts of the lever system

Answer 2

Fulcrum
Load
Effort

Question 3

What is a fulcrum

Answer 3

The axis around which a lever rotates. Often a joint

Question 4

What is a load

Answer 4

The force of the thing you want to move

Question 5

What is the effort

Answer 5

The force that is applied by the user of the level system. Usually a muscle

Question 6

How many types of level systems are there

Answer 6

3

Question 7

1st class level system

Answer 7

Fulcrum in the middle

Question 8

2nd class level system

Answer 8

Load is in the muddle

Question 9

3rd class lever system

Answer 9

Effort is in the middle

Question 10

Anagram to remember

Answer 10

123, FRE

Question 11

Example of 1st class levers

Answer 11

Load : fulcrum : effort

Tricep dip
Body weight through the centre of the hands : Elbow : triceps

Nodding
Weight of the head through the chin : joint at the top of the neck : muscle at the bottom of the neck

Rowing
Water : top of oar : biceps

Question 12

Example of a 2nd class lever system

Answer 12

Fulcrum : load : effort

Calf raise
Balls of the feet : weight of body through the feet: gastrocnemius

Question 13

Examples of the 3rd class lever system

Answer 13

Fulcrum : effort : load

Bicep curl
Elbow : bicep : weight being lifted

Kicking a ball
Knee : quadriceps : ball

Question 14

What is a mechanical advantage

Answer 14

A large load can be lifted with relatively little effort due to effort arm being long

Question 15

What is a mechanical disadvantage

Answer 15

Cannot lift as heavy load with same amount of effort due to effort arm being short

Question 16

Which classes have a mechanical advantage

Answer 16

First , second

Question 17

Which classes have a mechanical disadvantage

Answer 17

Thrid

Question 18

Disadvantage of first and second class

Answer 18

Slower movement
Limited flexibility

Question 19

Advantage of third class

Answer 19

Fast movement
Large range of movement

Question 20

Mechanical advantage example

Answer 20

• rowing a boat
• weight of water is very large compared to effort you are giving
• but rowers can still move the water easily and move quite quickly
  -due to length of level which is oar

-however slower movement, and limited flexibility

Question 21

Mechanical disadvantage example

Answer 21

• bicep curl
• cant lift as heavy load as same amount of effort
• effort it takes for bicep to life a weight is a very big effort

Question 22

Mechanical advantage calculation

Answer 22

Effort arm / resistance arm

Question 23

How many planes of motion and their names

Answer 23

3

-sagittal
-frontal
-transverse

Question 24

What is the sagittal plane

Answer 24

Splits the body in the middle resulting in left side amd right side
Moving in sagittal plane will be forwards of
backwards motion such as running
Flexion and extension

Question 25

What is the frontal plane

Answer 25

Splits the body to a front or back side
Sideways movement such as side steps
Abduction and adduction

Question 26

What is the transverse plane

Answer 26

Splits body accross the middle giving top section and bottom section
Allows rotational move such as spinning
Rotation

Question 27

Describe axis of rotation in sagittal plane

Answer 27

Transverse axis
- line goes from hip to hip
- extension and flexion
-rolls and flips would occur

Question 28

Describe axis in frontal plane

Answer 28

Sagittal axis
- stabs from centre of body
- abduction and adduction
-cartwheel

Question 29

Describe axis in transverse plane

Answer 29

Longitudinal axis
-runs through body as a vertical line
- rotation
-spinning would occur, twist jump