Week 10

Question 1

What is agility?

Answer 1

• Complicated to measure, many diff ways to test agility and many different aspects of agility
• “Skills and abilities needed to change direction, velocity, or mode in response to a stimulus”

Question 2

Is there a consensus on how to measure COD?

Answer 2

The vast array of COD tests in itself indicates that there is little consensus on how to measure COD

Question 3

Assessing agility

Answer 3

1. Consider whether the test is assessing agility or energy systems
2. Consider whether the test is assessing maneuverability or deceleration/acceleration
3. Consider whether the test assesses linear speed or COD
4. Consider angle and entry velocity

Question 4

1. Consider whether the test is assessing agility or energy systems

Answer 4

• For example, the 5-10 shuttle (run 5m 10x) does test agility but also tests anaerobic capacity
• The longer the test is the more you begin to test anaerobic capacity
• May perform poorly bc they don’t have high anaerobic capacity not bc they aren’t agile

Question 5

2. Consider whether the test is assessing maneuverability or deceleration/acceleration

Answer 5

For example, the zig zag test vs the 5-0-5

Question 6

3. Consider whether the test assesses linear speed or COD

Answer 6

Modified T-test attempts to limit the effect of linear speed and places more emphasis on the ability to change direction quickly

Question 7

What study was done to assess agility?

Answer 7

• Compared T-test results against results on three other tests (hexagonal test, vertical jump test, 40-yard dash)
• Analyzed which test best predicts performance on a T-test

Question 8

Results of study on agility

Answer 8

• Strong correlation between 40m sprint time and agility performance on the T-test
• Less strong correlation btwn performance on vertical jump and hexagonal tests with performance on the T-test

Question 9

What is the T-test actually measuring?

Answer 9

Reliable and valid measure of leg speed and secondarily of leg power and agility (great test for linear speed, not as great for agility)

Question 10

COD deficit

Answer 10

Practical measure to isolate COD agility independent of sprint speed
Difference between average 505 and 10 m time
Isolates CoD, rids the influence of linear speed

Question 11

What does it mean to have less of a deficit?

Answer 11

More agile

Question 12

Results from study on COD deficit

Answer 12

505 time is correlated with COD deficit, 10m time and 30m time
COD deficit not correlated with 10m time or 30m time
The overall speed on the test predicts performance on the 505 test and therefore this test does not test agility

Question 13

What are the two types of agility tests?

Answer 13

Planned vs reactive

Question 14

Lab definition of agility

Answer 14

Capacity to rapidly alter direction and velocity while maintain postural control and precision; critical component of performance

Question 15

What to agility assessments analyze?

Answer 15

Neuromuscular coordination
Reaction time
Biomechanical efficiency Acceleration/deceleration

Question 16

Physiological determinants of agility

Answer 16

o Myofascial elasticity
o Proprioceptive feedback mechanisms
o Recruitment patterns of motor units
o Muscular strength/power

Question 17

What agility tests did we do in lab?

Answer 17

o T test
o Modified T test
o Pro agility shuttle
o 5-0-5

Question 18

T-test

Answer 18

Assesses an athlete’s 4 directional agility and body control by challenging their ability to change directions rapidly while maintaining balance and speed

Question 19

Modified T-test

Answer 19

Replicates the movements of power sports that require quick directional changes in a limited amount of space

Question 20

Pro-agility shuttle

Answer 20

Assesses ability to accelerate, decelerate and change directions

Question 21

5-0-5 agility test

Answer 21

Assesses agility on horizontal plane with a single 180 degree change of direction
Allows for differentiation btwn left and right leg performance

Question 22

Leger 20-meter shuttle test (10mSRT beep test)

Answer 22

Multi stage running test used to estimate VO2max from maximal running speed
Continuous running test where athletes begin running at 8.5 km/hr an every minute (level), speed increases by 0.5km/hr

Question 23

Estimation of VO2max - beep test equation (Leger 1988)

Answer 23

VO2max = -27.4 + 6.0 (maximal aerobic speed)

Question 24

Estimation of VO2max- beep test (Stickland 2003)

Answer 24

Males
VO2max= 2.75 x (last half level completed) +28.8
Females
VO2max= 2.85 x (last half level completed) + 25.1

Question 25

What does sprint performance depend on?

Answer 25

• The ability of the body to exert vertical forces
• The ability of bioenergetic systems to meet the metabolic demands of the activity
• The muscle fibre type profile of the athlete

Question 26

What are horizontal sprinting activities used to assess?

Answer 26

Horizontal power-generating capacity, but these assessments do not involve the measurement of power output

Question 27

How to estimate horizontal power

Answer 27

Horizontal power (kg/m/s) = force (kg) x average velocity (m/s)

Question 28

What sprint assessments did we do in lab?

Answer 28

• 10 m sprint
• 25 m sprint
• Flying spring (20-10)

Question 29

10 m sprint

Answer 29

Sprint assessment from a stationary start over short distance reflects an athlete’s acceleration

Question 30

25 m sprint

Answer 30

Longer sprint measures athletes’ acceleration and max speed

Question 31

Flying sprint

Answer 31

Assesses only an athlete’s max speed

Question 32

Why are speed tests not conducted over a distance greater than 100 m?

Answer 32

Longer distances will reflect anaerobic or aerobic capacity more than the athlete’s absolute ability to move their body at max speed

Question 33

30-15 intermittent test overview

Answer 33

Evaluates high intensity running performance (max velocity)

Question 34

What is the intermittent structure associated with?

Answer 34

Increased oxygen consumption
HR
Blood lactate conc
Decreased blood and muscle pH