Chapter 19: program design and technique for speed and agility training Flashcards
the skills and abilities needed to achieve high movement velocites
speed
the skills and abilities needed to explosively change movement direction, velocities, or modes
change of dirrection
the skills and abilities needed to change direction, velocity, or mode in response to a stimulus
agility
the development of maximal force in minimal time, typically used as an index of explosive strength
rate of force development (RFD)
the product of the generated force and the time required for its production, which is measured as the area under the force time curve
Impulse
impulse dictates the magnitude of change of momentum of an object
impulse-momentum relationship
represents the interaction of two physical objects
force
the movment of mass changes an objects velocity causing this
acceleration
the rate at which an object covers a distance (scalar quantity)
speed
how fast an object is traveling and its direction
velocity
the rate at which an objects velocity changes over time
acceleration
change in force divided the the change in time
RFD
length of time the athletes are in the stance or plant phase
ground contact time
the product of the time the force is applied to the ground and the amount of force applied is called
impulse
the relationship between the mass of an object and the velocity of movement
momentum
these two things are most important in developing speed
impulse
RFD
strength training enhances the rate and amplitude of impulses being sent from the NS to the target muscle
neural drive
indicative of an increase in the rate at which action potentials occur, and are related to increases in both muscular force production and the RFD production
neural drive
this exploits two phenomena: intrinsic muscle-tendon behavior and force and length reflex feedback to the NS
SSC
acutely, SSC actions do this
increase mechanical efficiency and impulse via elastic energy recovery
chronically SSS actions do this
upregulate muscle stiffness and enhance neuromuscular activation
training activities aimed at improving SSC performance should fulfill two criteria
involve skillful, multijoint movements that transmit force through the kinetic chance and exploit elastic-reflexive mechanism
should be structured around brief work bouts or clusters separated by frequent rest pauses
in order to manage fatigue and emphasize work quality and technique SSC training should
be structured around brief work bouts or clusters separated by frequent rest pauses
training in which alternating SSC tasks with heavy resistance exercises within the same training session enhances their working effect
complex training
the basis for the acute aftereffect phenomenon of complex training
postactivation potentiation
this may be related to an increase in the sensitivity of associated muscle spindles
pre-tension caused by the preactivation of the trained musculature used in the activity