5 min test - My AVG power is higher than NP???

Discussion in 'Power Training' started by pelotoncamden, Dec 14, 2007.

  1. pelotoncamden

    pelotoncamden New Member

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    I performed a 5 minute power test today and noticed that my average power for the 5:01 was 347W whereas the NP was 346W. Does this make sense?

    Power-Tap #1:

    Duration: 5:01

    Work: 104 kJ

    TSS: 14.8 (intensity factor 1.332)

    Norm Power: 346

    VI: 1

    Distance: 2.128 mi

    Min Max Avg

    Power: 292 421 347 watts

    Heart rate: 141 174 169 bpm

    Cadence: 81 106 95 rpm

    Speed: 19.8 28.6 25.5 mph

    Pace 2:06 3:02 2:21 min/mi

    Hub Torque: 71 117 90 lb-in

    Crank Torque: 250 404 308 lb-in

     
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  2. daveryanwyoming

    daveryanwyoming Well-Known Member

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    Yeah, if you go through the NP algorithm and be sure to include the 30 second averaging you can get results like this where the NP is lower than the AP, especially for very short efforts. Remember NP isn't considered very accurate or useful for evaluating such short efforts. That one threw me for a loop when I first saw it, but it happens fairly regularly for short intervals.

    -Dave
     
  3. pelotoncamden

    pelotoncamden New Member

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  4. frenchyge

    frenchyge New Member

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    Sorta. It's an artifact of the math for square-wave intervals between 5 - 5.5 minutes.
     
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