test: technology Flashcards
what are the three biomechanics?
limb kinematics
force plates
wind tunnels
what is limb kinematics?
the study of movement in relation to time and space.
it records an athlete performing a sporting action and allows measurements of displacement, velocity and acceleration to be analysed.
how does limb kinematics work?
computer software linked to multiple cameras
converts motion shown by reflective markers placed on the bodies joints
advantages of limb kinematics
- results are immediate, objective and highly accurate which allows the coach to adjust technique
- can focus on a specific joint
disadvantages of limb kinematics
- accuracy depends of correct placement of markers
- equipment is expensive
what do force plates measure?
ground reaction forces
- data from an athlete balancing, running and jumping on a force plate can be used to assess the size and direction of forces
what is a force plate?
a rectangular metal plate with built in force transducers usually sunk into the ground to become part of the floor
advantages of force plates
- gives immediate, accurate and reliable results to analyse performance and health
disadvantages of force plates
- expensive equipment
- can cause performers to adapt the way they run or jump, limiting its potential use
how do wind tunnels work?
objects can be placed inside a wind tunnel
to measure the forces produced by air against its surface
dye or smoke is injected into the tunnel to observe air flow
why are wind tunnels used?
aims to improve air flow around an object
streamlining its path through the oncoming air and increasing lift or decreasing drag
advantages of wind tunnels
- allows for tight control of environmental variables
- gives them the ability to control cross winds or measure air resistance
disadvantages of wind tunnels
- expensive equipment
