Reliability
Reliability would depend upon how strict the test is conducted and the individual ’ s level of motivation to perform the test . As the audiotapes may stretch over time , the tapes need to be calibrated – which involves timing a one-minute interval and adjusting the distance between markers . The recording is also available on compact disc , which does not require calibration .
Validity
There are published VO2max score equivalents for each level reached and the correlation to actual VO2max is high .
Brian Mackenzie UK Athletics performance coach ( UKA4 ) and coach tutor , UK
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