Biomechanics

Question 1

Dynamics is

Answer 1

Unbalanced forces

Question 2

Dynamics causes….

Answer 2

Change in speed or acceleration

Question 3

Kinematics is ______. It describes ____,_____& ______

Answer 3

Geometry of motion.

Time. Displacement and velocity and acceleration

Question 4

What is kinetics

Answer 4

Forces That produce or change motion. Linear or angular

Question 5

Name the 5 muscle contraction and explain

Answer 5

Isometric - tension Developes in muscle
Isokintetic - dynamic exercise ( concentric and eccentric )
isotonic - tension develop in muscles causes joint movement
Plyometrics - muscles exert max force in short time
Kinetic chain - open or closed. Extremity fixed to object or not

Question 6

Name the 2 isotonic movements

Answer 6

Concentric and eccentric

Question 7

Difference between eccentric and concentric

Answer 7

Concentric - muscles shorten as tension builds

Eccentric - muscles lengthen as tension builds

Question 8

What are the 5 primary motor skills

Answer 8

Speed 
Accuracy 
Speed and accuracy
Distance 
Form

Question 9

The 3 movement phases

Answer 9

Wind up
Throwing
Follow through

Question 10

How would you classify a motor skill?

Answer 10

Must maintain erect posture, fitness, give motion to own body or objects, receive impact from own body or external

Question 11

Difference b/w sequential and simultaneous movements

Answer 11

Sequential

• various joint at different times
• segments move in order
• kicking a ball

Simultaneous

• joints move together
• segments move as one
• pulling object or squat

Question 12

ROM ?

Answer 12

Area joints can move that’s painless

Question 13

Define statics

Answer 13

Force acting on body are balanced and is in equilibrium