Sprint and COD

Question 1

what are the sprint phases

Answer 1

start, acceleration, peak velocity, deceleration

Question 2

what is included in the start phase

Answer 2

reaction time, push time

Question 3

what is included in the acceleration phase

Answer 3

transition

Question 4

Velocity =

Answer 4

step frequency x step length

Question 5

step frequency

Answer 5

how many steps you can do

Question 6

step length

Answer 6

how long is their stride

Question 7

step length is affected by ___

Answer 7

relative horizontal GRI and relative vertical GRI

Question 8

Step rate is affected by ___

Answer 8

relative vertical GRI

Question 9

length and frequency increase during ___

Answer 9

acceleration phase

Question 10

At peak velocity ___ and ___ remain constant

Answer 10

length and frequency

Question 11

in the beginning you have to push ___ to accelerate

Answer 11

horizontally

Question 12

___ is important during peak velocity

Answer 12

vertical force

Question 13

rate of force equals

Answer 13

horizontal force/ net force

Question 14

when running if sole of foot is facing up it is

Answer 14

floppy ankles

Question 15

sprint depends on how

Answer 15

quickly you can push and accelerate off of ground

Question 16

what are the 5 normative spatiotemporal and ground reaction

Answer 16

Running speed, step length, step frequency, support time, flight time

Question 17

What are the 5 major rules of acceleration

Answer 17

forward-oriented torso, neutral pelvis, scissoring thighs, acute shin angles, flexed angles

Question 18

Acceleration KPIS include:

Answer 18

Arms/legs separation synchronous contralateral, knee-elbow angles, push through trunk, triple extension, low feet recovery, neutral posture, shank is inclined at touch down.

Question 19

maximal speed KPIS

Answer 19

erect posture, hips-shoulder aligned, congruent contralateral limb action, neutral ankle, shank vertical at touchdown, knees together at touchdown, no triple extension, front-side dominance

Question 20

Biggest differences in acceleration form and sprinting form

Answer 20

posture, synchronous and congruent, shank, triple extension

Question 21

Types of COD ability

Answer 21

cutting, maneuverability, mode change

Question 22

cutting

Answer 22

high-angle directional changes with a clear plant step

Question 23

meaneuverability

Answer 23

maintaining velocity during curvilinear path without strong braking

Question 24

mode change

Answer 24

switching between travel modes

Question 25

The 505 test measures what

Answer 25

acceleration, deceleration, 180 degree turn, and re-acceleration

Question 26

short duration ___ metabolic influence and isolates COD ability

Answer 26

minimizes

Question 27

protocol for 505 test

Answer 27

start at 15m line, sprint toward turn line, plant turning foot on or beyond line, perform 180 turn sprint back toward start.

Question 28

How is the timing of the 505 test measured

Answer 28

crossing the 5 m line before the turn and to recrossing it after the turn

Question 29

Why is CODD (change of direction deficit) used

Answer 29

can identify athletes who are fast sprinters but poor at turning, track improvements in braking and turning ability

Question 30

change of direction is a key component in agility, but agility also requires ___

Answer 30

perceptual cognitive element

Question 31

as vertical force increases, velocity __ and contact time ___ and flight time and step frequency ___

Answer 31

increases, decreases, do not change

Question 32

as horizontal force increases __ and __ increase

Answer 32

velocity and step length

Question 33

as ankle vertical velocity increase __ and ___ do too

Answer 33

speed, thigh velocity