Exercise And Physiology Flashcards
What is valid research
Research that accurately measures what it claims to do
What is reliable research
The results can be trusted and similar results are shown if repeated
What can reliability affect
Comparison and evaluation of data
What can reduce reliability
Human and technological error
What does valid research reflect
It reflects the fitness requirements of the activity
Explain an advantage of laboratory testing
High levels of internal validity- controlling all your variables so you know your only measuring the ones you are testing for
Give and explain two disadvantages to laboratory testing
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
Give an example of human error in a lab
Contaminated blood samples
What does the V02 max treadmill test test for ?
The volume of oxygen a person can take in, transport and use in a minute
What does the V02 max test give a measure of?
Levels of cardiovascular and aerobic capacity
What does the lactate threshold test test for?
Shows the level at which your body begins to produce too much lactic acidosis in the blood due to intense exercise
Which two components of fitness are needed for a successful performance in the lactate threshold test
Endurance and speed
Explain the lactate threshold test
-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
Explain the V02 max test
-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
What does the Wingate 30second cycle test show?
Measures anaerobic capacity
By improving anaerobic capacity what types of sports performances will improve ?
Sprinting, throwing, gymnastics
Explain the steps to completing the wingate 30s cycle test
-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
What is fatigue index
Shows the difference between peak and low power over 30 seconds
List and explain two advantages of field tests
High ecological validity- follows real life game situations
Cost- it’s far cheaper than laboratory testing and can test many people at once
What are the disadvantages of field tests
Low internal validity- limited control of variables during data collection
What does valid research mean
How well the results among a study participant represents true findings among similar individuals outside of the study
