Human Movement studies

Question 1

What is a fulcrum

Answer 1

prop; specifically: the support about which a lever turns

Question 2

What is a Lever

Answer 2

A lever is a rigid rod that turns about a pivot

Question 3

What 2 components make up tangential velocity

Answer 3

Angular velocity and radius of rotation

Question 4

What is a 1st class lever

Answer 4

Fulcrum between the effort and resistance

Question 5

What is a 2nd class lever

Answer 5

the load is between the effort (force) and the fulcrum. A common example is a wheelbarrow

Question 6

What are the 3 guidelines for remediation

Answer 6

Correct form, communicate errors, formulate correction strategies

Question 7

What is the difference between open and closed kinetic chains?

Answer 7

closed = fixed or stationary (running, squats).
Open = free, not fixed (kicking or throwing)

Question 8

What are common throwing errors?

Answer 8

Segmental movement errors. Timing and sequencing errors. Errors due to lack of strength or power

Question 9

Describe what a movement pattern is

Answer 9

A general series of anatomical movements that have common elements

Question 10

Factors that influence the time and space variables of a movement pattern

Answer 10

Time, effort and flow

Question 11

Describe throw like movements

Answer 11

Movements that are used to project an object that is allowed to lag behind the proximal segments that have finished their backswings and are now moving
forward.

Question 12

What is the difference between a skill and a movement pattern

Answer 12

Skills have restraints eg. rules, and the size of the playing area. Movement pattern has no restraints, a series of movements with common elements

Question 13

What is the difference between quantitativee and qualitative analysis

Answer 13

Quantative - Objective description using numerical terms. Qualative - Subjective description using non numerical terms

Question 14

What components are the free body diagram made up of

Answer 14

Forces shown as straight arrows pointing in the direction they act on the body. Moments are shown as curves with an arrowhead or a vector with two arrowheads pointing in the direction they act on the body

Question 15

Define critical features

Answer 15

Components of movement essential to the performance of a skill

Question 16

What is the difference between a step and a stride

Answer 16

A step is defined as the moment from foot
contact of one foot to the contact of the
opposite foot and is representative of a half
cycle. A stride is a complete running cycle from foot
contact with the ground to the next ground
contact with the same foot

Question 17

What is the difference between a relative angle and an absolute angle

Answer 17

RA = The angle between
longitudinal axes of two segments (e.g. knee
or elbow joint angle)
AA = The angle of
the inclination of a body segment (e.g.
thigh angle) describing the orientation
of a segment in space (relative to the
vertical or horizontal directions)

Question 18

What happens to stance time and flight time as sprint velocity increases

Question 19

What type of ground reaction force occurs during the late stance phase

Question 20

Explain negative interactions

Answer 20

Where you improve one aspect but negatively impact the other. Eg. Improve step length but not frequency

Question 21

3 factors that influence a projectile

Answer 21

Height, angle, velocity

Question 22

4 stages of skill analysis

Answer 22

1. Pre observation. 2. Observation. 3. Diagnosis. 4. Remediation

Question 23

Pre observation

Answer 23

Movement analysis, identify key features

Question 24

Observation

Answer 24

Observe desired response

Question 25

Diagnosis

Answer 25

Determine primary errors

Question 26

Remediation

Answer 26

Correct form, communicate errors, formulate correction strategies

Question 27

what is angular momentum

Answer 27

The longer a proximal segment can accelerate the higher the velocity transfer

Question 28

What is tendon recoil?

Answer 28

Fastest shortening speed of tissue. Stretch shortening cycle. Stretched tendon store elastic energy

Question 29

What is a skill

Answer 29

A movement pattern that has been adapted within the constraints of a particular activity or sport

Question 30

segmental rotations

Answer 30

Human movement is created through a series of local
segmental rotations with joints acting as pivot points

Question 31

Describe Push-like movements

Answer 31

Characterised by the body parts moving simultaneously or nearly so, and are used for one of two mechanical
purposes:
To manipulate a resistance (force activities)
To maximise the accuracy of projection (accuracy
activities)

Question 32

Steps to develop an observation plan

Answer 32

1. Identify observation task and select relevant critical
   features
2. Determine the appropriate observation strategies
3. Determine the number of observations required
4. Need consistency to make conclusions
5. Select positioning to gather identified information

Question 33

Relevant phases of hitting

Answer 33

Back swing, drive (action), Follow through

Question 34

Magnus effect

Answer 34

fluid pressure decreases at points where the speed of the fluid increases. In the case of a ball spinning through the air, the turning ball drags some of the air around with it

Question 35

Tangent

Answer 35

When an object is struck by a rotating implement (e.g. golf club) the object will NOT trace the rotation of the implement
Instead, it moves off at a tangent (90°) to the rotation

Question 36

Describe throw-like movements

Answer 36

Movements that are used to project an object that is allowed to lag behind the proximal segments that have finished their backswings and are now moving
forward.

Question 37

What is tangential velocity

Answer 37

The linear velocity that the object will receive after
being struck by a rotating object