@anurag pw:hr is usually indicating power:heart rate ratio. Are you recording the workouts as Run or Hike?? As to the second part of your question I would start with the lower number for AeT and see how it goes for a few weeks.
Here is the description straight from your training plans:
HOW TO CONDUCT THE HEART RATE DRIFT TEST:
The heart rate drift test is used to determine your Aerobic Threshold (AeT). It is more accurate than the nose-breathing test suggested elsewhere on the Uphill Athlete website, especially if you are aerobically deficient(https://www.uphillathlete.com/aerobic-deficiency-syndrome/). The goal is to do the workout at what you think is aerobic intensity (below your AeT). You must exercise for an extended period—about one hour—and at a steady effort while recording heart rate and GPS data.Here is a video explaining how to do the test: https://www.uphillathlete.com/heart-rate-drift-test/
Watch this video after you have completed the test to set up your HR zones: https://www.uphillathlete.com/how-to-set-up-your-training-intensity-zones/
WHERE TO DO THE TEST:
Outside: On a flat course (running)
Inside: On a treadmill or stair machine
Do not do this test on an uphill/downhill out-and-back course. During the first half you will be going uphill and therefore doing more work, meaning the pace-to-heart-rate ratio of the two halves will be very different.
WHAT YOU WILL NEED:
* A GPS-enabled watch
* A chest strap heart rate monitor that pairs with your watch or phone (we recommend against using your watch’s built-in wrist heart rate monitor)
* A TrainingPeaks account, ensuring that your watch is connected and communicating with the account. Uphill Athlete will upgrade your account to Premium to view all the data. The various metrics TrainingPeaks (https://www.trainingpeaks.com) provides are invaluable to athletes and coaches, and we gladly pay our fee to them (we receive no price break or kickbacks).
SHOULD I RUN OR SHOULD I HIKE?
If you are going to be doing a lot of running in your training, do this test as a run. If you are primarily going to be hiking for your training, do this test as a hike on a treadmill or stair machine.
WHAT SHOULD THE EFFORT FEEL LIKE?
This effort should feel easy and relaxed—a conversational pace. In other words, you should be able to carry on a conversation in full sentences.
1.) Run on a flat course at what feels like an easy aerobic pace. (See above for more detail on the desired effort.) If you have a good idea of what your AeT is, then target that heart rate for the beginning of the test. If you have no idea about your target, then the MAF formula of 180-age is a great place to start.
2.) Once your heart rate stabilizes for 2–3 minutes after at least a 15-minute warm-up, start the recording feature on your GPS watch.
3.) Record for 60 minutes while doing your best to keep your heart rate close to that initial heart rate number.
4.) Upload the data to TrainingPeaks.
5.) Open the workout in TrainingPeaks and click the “Analyze” button. In the window to the right of your workout graph you will see Pa:Hr X.XX%. This decoupling metric compares the pace-to-heart-rate ratio of the first half of the workout to that of the second half. Note the number and skip ahead to “Reading the Results.”
1.) Set the treadmill to approximately 3% if using a running gait and 15% if using a power hiking gait. Make sure that the treadmill will not automatically stop after 60min of activity.
2.) Gradually build speed over the first 15 minutes until your heart rate stabilizes at what you feel is an easy aerobic effort for 2–3 minutes. (See above for more detail on the desired effort.) If you have a good idea of what your AeT is, then target that heart rate for the beginning of the test. Once you’ve dialed in the speed and grade, do not adjust them again during the test.
3.) Now you are ready to begin the test: Run or hike continuously for 60 minutes at that speed/grade while recording your heart rate.
4.) Upload the data to TrainingPeaks. Since GPS does not work indoors, the pace part of Pa:Hr will not be accurate. That is why it is so important that you hold the pace and grade constant once you start this test on a treadmill.
5.) Open the workout in TrainingPeaks and click the “Analyze” button. You will see a graph of your heart rate, pace, and elevation. To calculate heart rate drift, select the first half of the test in the graph and note your average heart rate in the window to the right of the graph. Then do the same for the second half. Compare the two numbers to determine the percentage rise of your average heart rate.
READING AND IMPLEMENTING YOUR RESULTS:
3–5 percent: You have determined your AeT heart rate, which was your starting heart rate for the test. Set that as the top of Zone 2 in your TrainingPeaks zones. Subtract 10 percent from this and set that as the top of your Zone 1.
0–3percent: The workout was within your aerobic intensity zones, but you should do the test again at a starting heart rate that is 5 beats per minute (bpm) higher.
>5 percent: Your initial heart rate/pace was above AeT. Redo the test using a lower starting heart rate. It may take several attempts to nail a decoupling that is slightly less than or equal to 5 percent.
Keep in mind that your AeT is not fixed. It changes day to day based on your recovery state and overall fitness. The decoupling (heart rate drift) metric is a convenient means of ensuring your workouts are within your aerobic capacity, and it can be used as an occasional spot check on your AeT.
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