Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

EXCI 352 Final Exam > Ch 19 Part 1 > Flashcards

Ch 19 Part 1 Flashcards

1
Q

What are the 3 important aspects of physical performance for Athlete Development?

A
  • Speed
  • Change of Direction
  • Agility
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What does speed require

A

the ability to accelerate & reach maximal velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Change of direction is the physical capacity to __________ while _____ & then ____, sometimes using a different ____ of travel

A

change direction; decelerating; reaccelerating; mode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What does agility require

A

The use of perceptual-cognitive ability in combination with change-of-direction ability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What are the 2 things can human locomotion can be categorized as within sport

A
  • Linear
  • Multidirectional
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What can be classified as linear

A
  • Sprinting
  • Track and Field events
  • Game-based contexts (open-field running)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What can be classified as Multidirectional

A
  • Team sports
  • Changes of direction predominate
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What limits speed, change of direction, & agility?

A

The effective application of force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which factors affect an athlete’s success in the explosive movements involved in speed, change of direction & agility?

A
  • Athlete’s strength capacity
  • Athlete’s ability to use this strength within the constraints of the activity
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What are the 2 variables that describe force relative to the time available to produce force?

A
  • Rate if Force Development (RFD)
  • Impulse
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the rate of force development

A

The development of maximal force in minimal time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the RFD typically used as

A

As an index of explosive strength

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How can RFD be described as in terms of an equation

A

change in force divided buy the change in time

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

In performance of Functional Movements how long is force typically applied for?

A

0.1 to 0.2 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

How much time would Absolute Maximum force Development require?

A

0.6 to 0.8 seconds

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Define impulse

A

The change in momentum resulting from a force, where momentum = mass x velocity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

What is impulse measured as

A

The area under the force-time curve

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Where do we want to move the force-time curve up to

A

Up tp the left

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

In which phases do athletes attempting to increase speed apply force to the running surface over a period of time?

A

In the stance phase of sprinting or in the plant phase of changing direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What do changes in impulse result in

A

Changes in the athlete’s momentum & therefore the ability to either accelerate or decelerate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Braking phase horizontal and vertical force

A

negative horizontal force
positive vertical force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Propulsive phase

A

positive horizontal force
positive vertical fore

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What type of production of force occurs during the maximal velocity phase of sprinting

A

Asymmetrical production of force

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

T/F The maximal velocity phase has shorter GCT’s compared to the acceleration phase

A

True

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
Q

T/F Power is the true indication of maximal explosive performance

A

False, power does not truly indicate maximal explosive performance

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
26
Q

What are better indicators for maximal explosive performance compared to power?

A
  • force
  • RFD
  • Impulse
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
27
Q

What should be considered during change-of-direction and agility maneuvers as a practical implication?

A

The production of braking forces over certain periods of time (braking impulse)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
28
Q

What are the 3 neurophysiological basis’ for speed

A
  • Nervous system
  • Stretch-Shortening Cycle (SSC)
  • Spring-mass Model
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
29
Q

What does strength training enhance?

A

Neural drive

30
Q

What is an enhanced neural drive related to?

A

Increases in both muscular force production & the rate of force production

31
Q

What does plyometric training increase

A

The excitability of high-threshold motor units, which increases neural drive

32
Q

What could strength training and plyometric training contribute to if taken together

A

Increases in RFD & impulse generation

33
Q

What do acute effects of SSC actions tend to increase?

A

Mechanical efficiency & impulse via elastic energy recovery

34
Q

What are the chronic effects of SSC actions

A

Upregulated muscle stiffness & enhances neuromuscular activation

35
Q

What should trainings aimed to improve SSC performance involve?

A
  • Skillful, multi-joint movements that transmit forces through the kinetic chain & exploit elastic-reflexive mechanisms
36
Q

What should trainings aimed to improve SSC performance be structured around?

A

Brief work bouts or clusters separated by frequent rest pauses to manage fatigue & emphasize work quality & technique

37
Q

Which type of muscle contraction has the highest amount of muscle destruction?

A

Eccentric

38
Q

The spring mass model is a ______ model that depicts _______ as a type of human _______ in which the displacement of body mass is the ____________ from energy produced and is delivered through the ________ _________ & extension of spring-like actions within muscle architecture

A

mathematical; sprinting; locomotion; aftereffect; collective coiling;

39
Q

In the simple spring-mass model relative to GRF during stance phase of a sprint what is the leg represented as?

A

A spring

40
Q

In the simple spring-mass model relative to GRF during stance phase of a sprint what is the initial stance represented as?

A

An uncompressed spring

41
Q

In the simple spring-mass model relative to GRF during stance phase of a sprint what is the midstance represented as?

A

A compressed spring

42
Q

In which phase do elite sprinters tend to deviate form a classic SSM?

A

The maximal-velocity phase

43
Q

How do elite sprinters deviate from the classic SSM?

A

By producing much of their vertical force in the 1st half of a ground contact.

44
Q

Do elite or non-elite sprinters have a more symmetrical vertical force curve?

A

Non-elite sprinters

45
Q

What should S&C professionals emphasize the prescription of for sprinting?

A

Exercises that have been shown to increase neural drive while overloading musculature of the hip and knee regions involved in the SSC

46
Q

What is the equivalent of a plant phase in a COD movement in sprinting?

A

Stance phase

47
Q

The plant phase in a COD movement represents what?

A

The transition between deceleration & acceleration steps

48
Q

What two things are critical to performance in COD & agility movements?

A
  • Body positioning
  • Maintenance of strong trunk positions
49
Q

What is the GCT length for sprinting max-velocity phase

A

0.09 to 0.11 s

50
Q

What is the GCT length for sprinting acceleration phase?

A

0.17 to 0.20 s

51
Q

What is the GCT length for Agility

A

0.23 to 0.25 s

52
Q

What is the GCT length for COD

A

0.44 to 0.72 s

53
Q

The perceptual-cognitive demands on athletes are related to their abilities in what areas?

A
  • visual search scanning
  • anticipation
  • decision making
  • reaction time
  • tactical situation
54
Q

What is sprinting a series of and what is it known as?

A

A series of coupled flight & support phases known as strides

55
Q

T/F Sprinting is described as rapid, unpaced maximal-effort running of 20s or less

A

False, it is 15s or less

56
Q

What is sprinting classically defined based on?

A

The relationship between stride length & stride frequency

57
Q

Stride length at max velocity Elite vs novice male sprinters

A

Elite: 2.70
Novice: 2.56 m

58
Q

Stride frequency elite vs novice male sprinters

A

Elite: 4.63 steps/s
Novice: 4.43 steps/s

59
Q

Running velocity elite vs novice male sprinters

A

Elite: 12.55 m/s
Novice: 11.25 m/s

60
Q

Ground contact time at max velocity elite vs novice male sprinters

A

Elite: 0.087s
Novice: 0.101 s

61
Q

Time spent at air maximum velocity elite vs novice male sprinters

A

Elite > Novice

62
Q

What is sprint speed determined by

A

By an athlete’s stride length & stride rate

63
Q

T/F more successful sprinters tend to have longer stride lengths

A

True

64
Q

What are the 2 primary limiting factors influencing sprint performance?

A

RFD and proper biomechanics

65
Q

What are the 3 series of subtasks of linear sprinting?

A
  • start
  • acceleration
  • maximum velocity
66
Q

What are the two phases of linear sprinting subtasks

A
  • Flight phase
  • Stance phase
67
Q

What is the recovery segment of the swing leg

A

Flight phase

68
Q

What is the ground preparation of the swing leg

A

Flight phase

69
Q

During which phase does the eccentric braking period occur

A

Stance phase

70
Q

When does the concentric propulsive period occur?

A

Stance phase

EXCI 352 Final Exam (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions