Analysing movement using technology Flashcards
1
Q
what are the 3 forms of technology used to analyse movement
A
- limb kinematics
- force plates
- wind tunnels
2
Q
define limb kinematics
A
study of movements of limbs in space & time taken to carry out movements - includes study of gait
3
Q
outline limb kinematics (3)
A
- reflective markers on bony landmarks
- filmed using multiple video or infra-red cameras
- data transferred to digital format for analysis
4
Q
advantages of limb kinematics (4)
A
- data immediately available & accurate
- coaches use analysis to make changes/improvements to technique
- analyses sports technique to avoid injury
- can improve or help select equipment - e.g. graphite tennis rackets & synthetic strings
- can calculate velocity & acceleration
5
Q
disadvantages of limb kinematics (3)
A
- equipment is expensive
- lab conditions - techniques difficult to perform as lack space & similarity to real life
- results don’t take into account individual differences
6
Q
define force plates
A
platform that measures all forces applied when performer stands, steps across or jumps on it
7
Q
outline force plates (3)
A
- platform embedded in ground measures ground reaction forces performer generates
- vertical or horizontal forces can be measured
- data generated - force time graph, power, & acceleration information (electronically)
( graphs can be creates - force-time, velocity-time, acceleration-time)
8
Q
advantages of force plates (5)
A
- fate & accurate results generated
- analysis of gait & take off & landing technique (explosive power) - identify technique & efficiency improvements
- results useful to plan conditioning & development programmes
- can prevent injury
- can help with injury rehabilitation (recovery)
9
Q
disadvantages of force plates (2)
A
- equipment = expensive
- lab conditions - difficult to perform/replicate
10
Q
define wind tunnel
A
chamber through which air is forced
11
Q
outline wind tunnel
A
- object/performer placed in tunnel
- controlled flow of air forced through
- airflow around object studied to measure resistance around it
(reduce air resistance to increase speed/velocity)
12
Q
advantages of wind tunnels (3)
A
- equipment & technique adapted to increase aerodynamic properties, reduce effect of air resistance, & increase performance (speed)
- wind speed & direction controllable to mimic competitive conditions
- individual pieces of equipment can be tested - e.g. bike hemet, clothing, bike frames
13
Q
disadvantages of wind tunnels (2)
A
- equipment = expensive - usually located in engineering facilities/research labs
- real life conditions may be impacted unexpectedly - results not always realistic
14
Q
sports that use wind tunnels (3)
A
- cycling
- skiing
- Formula 1
