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biomechanics > running > Flashcards

running Flashcards

1
Q

velocity of locomotion=

A

cycle rate x cycle length
cadence x stride length

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2
Q

VERTICAL motion, speeding up
direction of motion +
1. speeding up or slowing down
2. direction of acceleration

A

+, +

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3
Q

VERTICAL motion, not changing
direction of motion +
1. speeding up or slowing down
2. direction of acceleration

A

0, 0

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4
Q

VERTICAL motion, slowing down
direction of motion +
1. speeding up or slowing down
2. direction of acceleration

A

-, -

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5
Q

VERTICAL motion, speeding up
direction of motion -
1. speeding up or slowing down
2. direction of acceleration

A

+, -

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6
Q

VERTICAL motion, not changing
direction of motion -
1. speeding up or slowing down
2. direction of acceleration

A

0, 0

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7
Q

VERTICAL motion, slowing down
direction of motion -
1. speeding up or slowing down
2. direction of acceleration

A

-, +

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8
Q

4 phases of running gait

A

stance, float, swing, float

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9
Q

phase of running gait: stance

A

single limb support, absorption and propulsion

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10
Q

phase of running gait: float

A

double limb unsupported

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11
Q

phase of running gait: swing

A

single limb support

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12
Q

one stride/cycle length =

A

one R heel strike to the next R heel strike

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13
Q

absorption of running forces, eccentric or concentric

A

eccentric

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14
Q

gravitational potential energy

A

an object that falls from a higher will land with more force

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15
Q

elastic potential energy (_____)

A

strain

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16
Q

elastic potential energy will yield

A

kinetic energy

17
Q

positive work is concentric or eccentric

A

concentric

18
Q

negative work is concentric or eccentric

A

eccentric

19
Q

product of avg force and duration of force applied

A

impulse

20
Q

what will impulse will aid during running

A

momentum at push off

21
Q

what will impulse decrease during running

A

momentum at heel strike

22
Q

mass further from an axis creates more or less angular resistance

A

more

23
Q

what affects moment of inertia more than the mass itself

A

distribution of the mass

24
Q

valgus force on knees

A

fall inward

25
Q

varus force on knees

A

fall outward

26
Q

pronated foot/ankle

A

lean inward

27
Q

supinated foot/ankle

A

leaning outward

28
Q

femoral anteversion

A

feet and knees point in

29
Q

femoral retroversion

A

feet and knees point out

30
Q
A

biomechanics (14 decks)

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