Exercise And Physiology

Question 1

What is valid research

Answer 1

Research that accurately measures what it claims to do

Question 2

What is reliable research

Answer 2

The results can be trusted and similar results are shown if repeated

Question 3

What can reliability affect

Answer 3

Comparison and evaluation of data

Question 4

What can reduce reliability

Answer 4

Human and technological error

Question 5

What does valid research reflect

Answer 5

It reflects the fitness requirements of the activity

Question 6

Explain an advantage of laboratory testing

Answer 6

High levels of internal validity- controlling all your variables so you know your only measuring the ones you are testing for

Question 7

Give and explain two disadvantages to laboratory testing

Answer 7

Low levels of ecological validity- data is not collected from the environment that reflects real life situations

Cost- the equipment often requires the use of expensive equipment and trained scientists

Question 8

Give an example of human error in a lab

Answer 8

Contaminated blood samples

Question 9

What does the V02 max treadmill test test for ?

Answer 9

The volume of oxygen a person can take in, transport and use in a minute

Question 10

What does the V02 max test give a measure of?

Answer 10

Levels of cardiovascular and aerobic capacity

Question 11

What does the lactate threshold test test for?

Answer 11

Shows the level at which your body begins to produce too much lactic acidosis in the blood due to intense exercise

Question 12

Which two components of fitness are needed for a successful performance in the lactate threshold test

Answer 12

Endurance and speed

Question 13

Explain the lactate threshold test

Answer 13

-The athlete begins running/swimming/cycling at a fair pace
-Treadmill speed is increased at 3 minute intervals
-At each stage a blood sample is taken from the finger or ear
-blood lactate levels are measured
THE HIGHER THE INTENSITY THE MORE THE BODY HAS ADAPTED TO BUFFERING LACTIC ACID

Question 14

Explain the V02 max test

Answer 14

-The athlete is connected to a gas analyser and heart rate monitor
-treadmill speed is gradually increased
-the concentration of oxygen and Co2 is measured
-test continues until exhaustion, showing maximum oxygen has been taken up

Question 15

What does the Wingate 30second cycle test show?

Answer 15

Measures anaerobic capacity

Question 16

By improving anaerobic capacity what types of sports performances will improve ?

Answer 16

Sprinting, throwing, gymnastics

Question 17

Explain the steps to completing the wingate 30s cycle test

Answer 17

-The cycle ergometer is set up with resistance in proportion to the athletes body weight
-cycle for 30 seconds
-number of revolutions pedalled every 5 secs are counted by a computer
-results show: average power over 30 seconds, peak power achieved and the fatigue index

Question 18

What is fatigue index

Answer 18

Shows the difference between peak and low power over 30 seconds

Question 19

List and explain two advantages of field tests

Answer 19

High ecological validity- follows real life game situations
Cost- it’s far cheaper than laboratory testing and can test many people at once

Question 20

What are the disadvantages of field tests

Answer 20

Low internal validity- limited control of variables during data collection

Question 21

What does valid research mean

Answer 21

How well the results among a study participant represents true findings among similar individuals outside of the study