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Active Care Exam One > Exercise Science Principles > Flashcards

Flashcards in Exercise Science Principles Deck (123)
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1

Which muscles are weakened according to the cross syndrome in the pelvic region?

Gluteus maximus and abdominal muscles

2

Which muscles are weakened according to the cross syndrome in the shoulder region?

Deep neck flexors and scapular stabilizers, retractors, and depressors

3

Which muscles are tightened according to the cross syndrome in the pelvic region?

Iliopsoas and erector spinae muscles

4

Which muscles are uninhibited/overactive according to the cross syndrome in the shoulder region?

Upper trapezius, levator scapulae, and pectoral group muscles

5

What is the primary goal in rehab of muscle dysfunction?

Retrain control (NOT incase strength)

6

What is the term for the point of the exact center around which the body freely rotates and the point where all weight is equal on all sides?

Center of gravity (COG)

7

At approximately what vertebral level is the center of gravity?

S2 (slightly higher in men than women)

8

What is the term for the area of contact between the body and the supporting surface?

Base of support

9

The line of gravity must fall within what measurement?

Base of support

10

What is the imaginary line that runs through the center of gravity called?

Line of gravity

11

In general, how is balance maintained and stability achieved?

When COG remains over base of support

12

When the applied (muscle) force is less than the resistive force, is the ratio or the force moment arm to the resistive force moment arm greater or less than 1.0?

Greater

13

When the applied (muscle) force is greater than the resistive force, is the ratio or the force moment arm to the resistive force moment arm greater or less than 1.0?

Less

14

Which ratio is a mechanical disadvantage: when the ratio of the force moment arm to the resistive force moment arm is greater or less than 1.0?

Less than 1.0

15

How is mechanical advantage calculated in terms of force and resistance?

Force divided by resistance (greater than 1.0 = better mechanical advantage)

16

What term is the ability of a force to cause rotation?

Torque

17

Do we see more torque with a longer or shorter moment arm (lever)?

Longer

18

Which class lever has the fulcrum between the force and resistance arms?

1st class

19

Cervical extension is an example of what kind of lever?

1st class

20

Seesaw, scissors, prying/crowbar are all examples of what kind of lever?

1st class

21

What is the benefit of having the fulcrum nearer to the force?

Speed and ROM

22

What is the benefit of having the fulcrum nearer to the resistance?

Increased force

23

What is the benefit of having the fulcrum in the middle?

Balanced movement

24

Where does the resistance lie with a 2nd class lever?

Between the force and the fulcrum

25

Calf raises are an example of which class lever?

2nd

26

Wheelbarrow, nutcracker, and push ups are examples of which class lever?

2nd

27

What are the benefits of a 2nd class lever?

Mechanical advantage, move large resistance with little force (increases force)

28

What is the disadvantage to a 2nd class lever?

Small range of motion

29

Which class lever has the force between the resistance and the fulcrum?

3rd class

30

Elbow flexion is an example of which class lever?

3rd class