test 3 Flashcards

1
Q

1 gait cycle is composed of what

A

2 steps is 1 stride

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2
Q

gait cycle 2 cycles are what

A

traditional and rla

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3
Q

traditional phases

A

1- heel strike, 2- foot flat, 3- midstance, 4- heel off, 5- toe off, 6- acceleration, 7- moving, 8- deceleration

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4
Q

rla phases

A

1- initial contact, 2- loading response, 3- midstance, 4- terminal stance, 5- pre swing, 6-inital swing, 7- midswing, 8- terminal swing

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5
Q

what phases are composed of the stance phase

A

one through four

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6
Q

what phases are composed of the swing phase

A

5 through 8

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7
Q

what is the traditional stance vs swing phase

A

60/40

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8
Q

a positive contraction relates to what other positive variables

A

positive work and positive power and positive energy

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9
Q

if the moment are moving in the same direction what kind of contraction is it

A

concentric

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10
Q

if the moments are moving in opposite directions what kind of contraction is it

A

eccentric

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11
Q

concentric elbow flexion uses what muscles

A

the 3 b’s b brachi brachialis brachioradilis

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12
Q

concentric elbow extension uses what muscles

A

triceps brachi and anionerous

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13
Q

eccentric elbow extion uses what muscles

A

biceps b

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14
Q

ecentric elbow flexion uses what muscles

A

triceps brachi,

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15
Q

ecentric contraction leads to positive or negative energy, work, power

A

negative energy, negative work, negative power

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16
Q

where do we draw our calculations from in a dynamic setting

A

the center of mass

17
Q

force equals what

A

mass * acceleration

18
Q

efx is calculated as what

A

mass * acceleration(x)

19
Q

efy is calculated as what

A

mass * acceleration(y)

20
Q

em is calculated as what

A

IX

21
Q

what are the forces that govern motion

A

efx, efy, em

22
Q

cop stands for what

A

center of pressure

23
Q

com stands for what

A

center of mass

24
Q

quiz question on notebook

A

labeling the dynamic movement

25
Q

efficiency is what

A

maximizing work for a given energy

26
Q

economy

A

minimizing energy for a given amount of work

27
Q

what are some sources of innefficiency

A

co contraction, double limb support , pathologies

28
Q

sources of uneconomical

A

training based