Kinetic Link

Question 1

What does the kinetic link system consist of?

Answer 1

• coordination: the body segments are linked together, well-timed movements through muscle contractions

Question 2

What are the 2 basic principles that guide the kinetic link system?

Answer 2

• simultaneous movements of the body segments

- sequential movements of the body segments

Question 3

What are simultaneous movement of the body segments used for?

Answer 3

accuracy or force

Question 4

What are sequential movements of the body segments used for?

Answer 4

high velocity

Question 5

Describe the simultaneous kinetic link principle. Give an example.

Answer 5

• major body motions simultaneous
• no observable time exists between the contributions of each involved segment
• ex. shot-put

Question 6

The simultaneous motion results in:

Answer 6

• less velocity/power

- decreased risk of injury

Question 7

Name some skills that use both simultaneous and segmental movements.

Answer 7

• tennis serve

- volleyball hit

Question 8

Describe the sequential kinetic link principle. Give an example.

Answer 8

• specific sequence
• segmental motions or joint rotations
• time elapses between peak velocities
• core —> appendages
• ex. pitching: lower body, trunk, arm, hand, fingers (max. velocity)

Question 9

Sequential vs. simultaneous kinetic link principle depends on:

Answer 9

• mass of object

- high velocity vs. accuracy

Question 10

What is the principle of specific velocity?

Answer 10

most sport actions involve the optimization of velocities of a specific body segment, sport implement, or sport object

Question 11

What is the continuity principle?

Answer 11

• optimum transfer of force
• in the human body: large to small muscle groups
• initiation/engagement of the most stable/core muscle groups first
• more outward/upward to limbs (proximal –> distal)

Question 12

What is the principle of sequential velocity?

Answer 12

Optimum specific velocity is achieved by:

• proper timing
• velocity of each component reaches its greatest contribution in sequence up to the final critical point

Question 13

What is the principle of summation of velocities/sequential timing?

Answer 13

development of maximum force:

• maximize the number of body parts, joints, and planes involved
• develop maximum velocity in each body segment
• coordinate these velocities to maximize the resultant force or velocity (aka sequential timing)

Question 14

What is the principle of energy transformations?

Answer 14

the stereotype of perfect skill mechanics is usually one in which energy transformations are carried out most smoothly and efficiently

Question 15

What is the direction principle?

Answer 15

all force should be applied as directly as possible in line with the intended direction of motion

Question 16

What is the principle of duration of force application?

Answer 16

if a constant force is applied to a body, the body develops greater velocity as the distance over which the force is applied increases

Question 17

What are the 3 steps in motor performance analysis?

Answer 17

• skill phasing
• principles/factors application
• coaching/feedback phase

Question 18

What does the skill phasing step consist of?

Answer 18

• generally 6 phases
• describing the skill into its logical parts
• stereotype of perfect skill mechanics

Question 19

What does the principles/factors application step consist of?

Answer 19

• describing the principles/factors that lead to effective, efficient performance
• know the purpose of the skill
• know the product and the process
• know the key factors and underlying principles

Question 20

What does the coaching/feedback phase consist of?

Answer 20

• viewing from multiple angles
• be specific
• identifying underlying mechanical problems
• provide feedback