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Biomechanics Of Aerobic Exam 2 > Exam 2 > Flashcards

Exam 2 Flashcards

1
Q

What is one of the main ways in which the human skeleton has evolved to help dissipate impact forces during running ?

A

Larger bone joint surfaces

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2
Q

While running at moderate speeds, humans experience approximately _______ times their body weight in the form of ground reaction force ?

A

3-4

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3
Q

Name 3 ways humans have evolved to be good at thermoregulation

A

More sweat glands
More respiration through mouth
Body hair

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4
Q

Name 3 ways in which we reduce the amount of ground reaction force experienced through running

A

Increase limb compliance
Use a mid foot stroke running style
Use a forefoot strike running style

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5
Q

If acceleration of a person is equal to zero , what can we conclude about the motion of the person ?

A

The persons velocity may be equal to zero or they are traveling at a constant velocity

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6
Q

When calculation kinetic energy of a moving object which variable
Constitutes most to the amount of energy that is being produced ?

A

Velocity

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7
Q

Name 3 main principles of Sport Biomechanics

A

Technique improvement
Equipment improvement
Injury prevention

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8
Q

What is the primary reasons our arms swing when we walk/run?

A

To serve as a counterbalance mechanism

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9
Q

As a person moves farther away from earths surface, weight ______ while mass _____

A

Decreases , stays the same

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10
Q

True or false

Mass and weight are the same

A

False

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11
Q

According to Newton’s second law of motion and under the assumption that mass of an object remains constant, , in order to increase the amount of force being generated , you must increase________ of the object

A

Acceleration

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12
Q

What area of biomechanics studies the effect of forces on the human body ?

A

Kinetics

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13
Q

_____ is known as the father of biomechanics

A

Giovanni borelli

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14
Q

The more mass an object has the more _______ it also has

A

Inertia

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15
Q

Give an example of equipment improvement that enhances athletic performance

A

Shoes

Tracks

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16
Q

What two main components of hair determine running speed?

A

Stride length

Stride rate

17
Q

Define biomechanics

A

The study of forces and their effects on living systems

18
Q

Explain the study of ergonomics and give and example

A

The science of equipment design intended to maximize productivity by reducing operator fatigue or discomfort

Example : standing desk

19
Q

What is kinematics?

A

Describes the motion of the human body ( velocity , speed)

20
Q

What’s the difference between static and dynamic biomechanics ?

A

Static - at rest or at a constant velocity

Dynamic- speeding up or slowing down

21
Q

What is Isaac Newton known for?

A

Laws of physics

22
Q

What two equations have the same variable but describe different principles ?

A

Momentum - mass x velocity

Kinetic - 1/2 mass x velocity^2

23
Q

Who has more inertia ? 60kg gymnast or 60kg swimmer?

A

They are both the same

24
Q

What does mechanical work describe?

A

Moving force over a certain distance

Force x distance

25
Q

Dick Fosbury invented the Fosbury flop. Why is this better then the western roll?

A

Center of gravity is below the bar

26
Q

What are two ways we can reduce the amount of unpack forces experienced during running?

A

Utilizing the most efficient step rate

Limb compliance

27
Q

What is momentum ?

What is the equation?

A

Mass on the move

Mass x velocity

28
Q

How much ground reaction force do humans experience during running and how does it change with speed?

A

3-4 body weight

Increases with increase in speed

29
Q

What is the difference between mass and weight ?

A

Weight = mass +gravity

Mass is the amount of space your body takes up

30
Q

According to the Endurance running and evolution of the homo article , why might “trotting” be an inefficient form of running?

A

Vertical displacement of mass does not contribute to forward motion

Biomechanics Of Aerobic Exam 2 (1 decks)

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