Lecture 21 : Agility and Change of Direction Flashcards
(44 cards)
change of direction is a what skill
closed skill
agility is a what skill
open skill
change of direction is what
closed skills that involves a rapid whole body movement with a pre planned change of velocity or direction
what is agility
a rapid whole body movement with change of velocity or change of direction in response to a stimulus
agility requires and element of
decision making and reaction
agility is vital in what sports
territorial sports
what are the biomechanical factors of change of direction and agility
ground contact time
breaking and propulsive forces
deceleration mechanics
joint angles and trunk position
what are the neuromuscular factors of change of direction and agility
eccentric strength
rate of force development
reactive strength
what are the anthropometric factors of change of direction and agility
body mass and limb length (limb length due to turning radius)
when you are performing something and trying to be agile you are most likely to be making what type of turns
quick turns rather than short turns
what are sharp turns
like 180 deg turns
have to stop all momentum in one direction and re-engage in a different direction
short turns require more what than quick turns
require a lot more eccentric and speed strength
what have a longer duration in the contact phase quick of sharp turns
sharp turns due to the change in momentum
what type of turns are more risky and why
sharp turns are more risky because of the eccentric load,
but in saying this quick turns can also be risky
what is a quick turn
often the athlete is not completely stopping, redirecting a little bit
who will have a faster change of direction a player who is very strong but with not much power or a player who is less strong but greater rate of force development
the player that is less strong but with greater rate of force development
what techniques are important in cutting
low centre of mass
wide base
optimal foot placement
what does trunk lean and shin angles tell us in terms of movement mechanics
how engaged those muscles are going to be and how effective the athlete is going to use those muscles
what strength qualities are really important for change of direction and agility
eccentric strength
concentric and isometric strength
reactive strength
unilateral strength and control
why is eccentric strength important for agility and change of direction
for braking / deceleration
why is concentric and isometric strength important for agility and change of direction
for re-acceleration
why is reactive strength important for agility and change of direction
for quick transitions
explain perception action coupling (think 202)
our environment and actions guides our movement
perceptions shape action
actions shape perception
what does perception shapes action mean and what is this called
we perceive information from our environment which informs our actions (affordance)