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Movement Science 2 > Running Movement Science Textbook > Flashcards

Running Movement Science Textbook Flashcards

1
Q

What is the speed range for running

A

2.5 m/s to greater then 10m/s

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2
Q

What are the two phases of running cycle

A

stance and swing

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3
Q

Stance

A

when the reference foot is in contact with the ground

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4
Q

swing

A

when the reference foot is in the air

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5
Q

stance phase occupies how much of the running cycle

A

40%

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6
Q

As running speed increased does stance or swing phase decrease

A

stance phase decreases

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7
Q

Does running have a period of double limb support

A

NO

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8
Q

There are two other periods in the running cycle describe them

A

two periods of float where neither limb is in contact with the ground

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9
Q

Float must be present for the movement to be characterized as running

A

true

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10
Q

What are the 5 events that are defined for the running stride cycle

A

initial contact
midstance
heel off
toe off
midswing

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11
Q

Initial contact defined as what %

A

0%

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12
Q

midstance occurs when bodies COM is over the support limb what %

A

20%

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13
Q

heel off and toe off occur at what percentage of running

A

30 and 40%

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14
Q

mid swing occurs at what percentage of running

A

70%

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15
Q

The part of the foot that inititally contacts the ground is termed what and how many different manners

A

foot strike

  1. rearfoot strike
  2. midfoot strike
  3. forefoot strike
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16
Q

during running the pelvis demonstrates an average anterior tilt position of what?

A

15-20%

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17
Q

stance hip rom is moving into

A

extension

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18
Q

swing hip rom is moving into

A

flexion

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19
Q

stance knee rom is

A

slightly moving toward extension

20
Q

swing knee ROM is moving into

A

increased flexion

21
Q

Stance ankle rom is in

A

dorsiflexion

22
Q

during swing ankle ROM

A

plantarflexed

23
Q

what is the active peak and what is the magnitude

A

2.5 times body weight
largest vertical ground force reaction associated with the end of loading response

24
Q

what is the impact peak and what is the magnitude

A

1.5 times body weight and is present before the active peak at 5% of the stride cycle

25
Q

The impact peak imparts an immediate _____to ____ compression force from the leg to the head

A

distal to proximal

26
Q

Impact force is characterized by its magnitude and rate of _____

A

development

27
Q

impact forces increase with 3 different conditions

A
  1. running downhill
  2. slower step rate
  3. pronounced rearfoot stride
28
Q

Literature suggest that peak magnitude of impact force may not be associated with stress injuries but rather the magnitude of the _____ of loading represented by the slope of the vertical force

A

rate

29
Q

Impact peak occurs during ____% of stride cycle

A

5% its the initial peak vertical force

30
Q

Active peak occurs during ____% of the stride cycle

A

20% its the overall peak vertical force

31
Q

during the first half of stance phase the anterior to posterior force is directly posterior calling it a

A

braking impulse

32
Q

braking impulse creates a

A

deceleration of the COM

33
Q

The farther ahead the foot is relative to the COM the _____ the braking impulse

A

greater

34
Q

from mid-stance to toe off the anterior posterior GFR is directly anterior and serves to ____ the body into swing phase creating a _____ impulse

A

propels and a propulsive impulse

35
Q

what is the path of center pressure for those who demonstrate a rearfoot strike

A

posterior-lateral aspect on initial contact progressing to anterior medial during push off

36
Q

The area under power curves reflect what

A

the amount of mechanical work performed at the joint over a specified time period

37
Q

Negative work is

A

eccentric activity

38
Q

positive work is

A

concentric activity

39
Q

joint torque and power do not reflect the contribution and function of individual muscles but of all of the muscles crossing a joint

A

True

40
Q

older adults have decreased preferred running speed, decreased float time and vertical displacement compared to younger adults

A

true

41
Q

Older adults show a reduction in peak ankle plantar flexion torque and power generation

A

true

42
Q

Female demonstrate greater frontal and horizontal plane motion during running compared to males

A

true

43
Q

females display greater power absorption in the hip

A

true

44
Q

impact peak increases when running on declined surface and decreases when running on an inclined surface

A

true

45
Q

the ability to quickly modulate stiffness of LE enables runners to run similarly on a variety of surfaces

A

true

Movement Science 2 (10 decks)

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