Audio Master Class: Threshold Field Testing–Why It’s Important

This is a re-write and re-recording of a past Audio Master Class on field testing. I have updated the information and reduced the options to the simpler 20-minute field test rather than include the more confusing options of 8-minute vs 20-minute field tests. For less fit or new students, I still recommend the Talk Test, which you can find here.

This first post is the physiology and explanation, how to explain it to your students, and what to do with the numbers once you’ve done the testing. Part 2 provides with a complete written and recording of a 20-minute field test Audio Master Class with coaching and cueing ideas and a new playlist.


  1. Hi Jennifer,

    I conducted a field test and I am confused on how we are suppose to use the average heart rate that we found during the 20 minutes.
    thank you

  2. Hi Jennifer, the link above takes me to the actual field test instead of “why it’s important.” I conducted a field test over the weekend and am looking for that information. Can you either repost or send me the link? Thanks in advance.

  3. Author

    Hi Kim,
    excellent question.
    It happened to one of my students yesterday in our third field test. We examined her “big picture” and she’s been under a lot of stress and was very fatigued. She just didn’t have enough to give that morning. On a fully rested day, she might have been able to produce a higher number.
    But there can be many reasons. With heart rate you have to be more of a sleuth, because of the extent of the potential variable. With power it’s a little more straightforward, but you can also determine if they are over-fatigued and should retest on a day when they aren’t so tired.
    I’ll answer this more fully as an Ask the Expert, great question!

  4. What would it mean if there number dropped?

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