Movement Analysis

Question 1

What is a lever?

Answer 1

A lever is a rigid structure that rotates around a fixed point and applies force against resistance.

Question 2

The 3 parts of a lever system ..

Answer 2

Fulcrum
Effort
Load

Question 3

Example of fulcrum in body..

Answer 3

A Joint

Question 4

Example of load…

Answer 4

Weight. Or body weight

Question 5

Effort is..

Answer 5

Muscles contracting

Question 6

The classes of lever are …

Answer 6

First class lever
Second class lever
Third class lever

Question 7

How to remmeber the classes of lever

Answer 7

1 2 3 (classes of lever)
F L E (Fuclrum , Load ,Resistance)
For first class lever the fulcrum Is in the middle

Question 8

Example of a first class lever …. (Fulcrum in the middle )

Answer 8

Tricep extending at the elbow
Neck

Question 9

Example of a second class lever… ( load in the middle)

Answer 9

Ankle, gastrocnemius creating plantarflexion at the ankle when jumping

Question 10

Example of a third class lever.. (effort in the middle)

Answer 10

Bicep creating flexion at the elbow
Hamstring creating flexion at the knee

Question 11

What does mechanical advantage measure?

Answer 11

Mechanical advantage measures the efficiency of a lever ( how easy it is to lift the load )

Question 12

What does mechanical advantage depend on?

Answer 12

The distance between the effort and the fulcrum Compared with the distance between the load and the fulcrum.

Question 13

What’s the resistance arm?

Answer 13

Distance between the load and the fulcrum.

Question 14

What’s the effort arm?

Answer 14

Distance between the effort and the fulcrum.

Question 15

Equation for mechanical advantage..

Answer 15

Mechanical advantage= effort divides by resistance

Question 16

Rule 1 of mechanical advantage is …

Answer 16

Effort arm shorter than load arm = low mechanical advantage
Short effort allows fast movement of low weights
Third class levers always have low mechanical advantage

Question 17

Rile 2 of mechanical advantage …

Answer 17

When the effort arm is longer than the load arm it has a higher mechanical advantage.
Heavy load can be lifted with little effort
Second class levers always have high mechanical advantage

Question 18

What is a plane of movement

Answer 18

An imaginary line that shows direction of movement.

Question 19

What is an axis of movement?

Answer 19

An imaginary line through the body around which it rotates.

Question 20

What are the 3 planes of movement?

Answer 20

Sagittal plane - forwards and backwards movements
Transverse plane- rotation movements
Frontal plane - side to side movements

Question 21

What are the 3 axis of movement and where they are

Answer 21

Transverse - horizontally through the body
Sagittal - diagonally through the body
Longitudal- vertically through the body

Question 22

Some Footballers- Like To - Take Shots

Answer 22

Examples of movements in the body
S-F Sagittal axis- Frontal Plane. Abduction of shoulder-cartwheel/star jumps
L-T Longitudal axis- Transverse plane. Rotation - shotput,360 spin
T-S Transverse axis-Sagittal plane Flexion and extension- bicep curls, 100 metre sprint