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Flashcards in chapter 17 Deck (38)
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1

speed

the skills and abilities needed to achieve high movement velocities

2

agility

the skills and abilites needed to explosively change movement velocities or modes

3

speed-endurance

the ability to maintain maximal movement velocities or repeatedly achieve maximal accelerations and velocities

4

special endurance

the ability to repeatedly perform maximal or near-maximal efforts in competition specific exericise:relief patterns (work:rest ratios)

5

2 qualities of competition specific exericise relief patterns

1: the metabolic power to executs specific techniques at the targeted effort level
2:the metabolic capacity to do so repetitively

6

force equation

mass x acceleration

7

impulse

the change in momentum resulting from a force

8

power

the rate of doing work the product of force and velocity

9

sprinting error: hands too wide

Cause: misunderstand of movement
Correction: place arms at shoulder width

10

sprinting error: not getting 90 degree of front leg

cause: hips too high or low
correction: adjusting hip height

11

sprinting error: too much weight distributed to arms

Cause: improper weight distribution
Correction: raising hips upward more than forward and straightening arms and distributing weight evenly

12

sprinting error: unnecessary tension in dorsal muscles

cause: misunderstanding of movement
correction: normal head alignment eyes focused on group

13

sprinting error: "jumped" first stride

cause: push off angle too high; upward thrust too steep
correction: increase forward lean, head alignment, accelerate leg

14

how can force be expressed

impulse and power (mass x acceleration)

15

the final movement velocity targeted when a mass is being accelerated

velocity specificity

16

what has a greater force lengthening or shortening?

lengthening

17

muscle shortening depends on

1: contractility and exitability of neuromuscular system
2: muscle architecture
3: motor unit composition; cross bridge rates

18

how to improve SSC

1. skillful multijoint movements
2. work/rest exercises
plyometric and heavy reisiance training

19

complex training

alternating SSC with heavy resistance

20

what is postactivation potentiation

the phenomenon of complex training that enhaces the SSC

21

which is untrainable: reactive ability of reaction time?

reaction time

22

braking is during what movement

eccentric

23

propulsion is during what movement

concentric

24

starting position for sprinting

even distribution of body weight
front knee angle 90 degree and rear knee 110-130

25

push-off sprint position

rear leg produces greater initial force

26

head position sprinting

relaxed neutral position

27

flight phase for sprinting

maximum velocity

28

training objective for sprinting-minimize braking forces

plant food directly beneath the center of gravity

29

training objective for sprinting emphasize brief groud touching to increase stride rate

high level of explosive strength

30

training objective for sprinting emphasize training for hamstring

eccentric knee flexor strength