Monday, April 27, 2009

A Word About HIIT And Training Intensity


While I don't believe that High Intensity Interval Training (HIIT) is the only worthy form of cardio, I do firmly believe it is the ideal form of cardio for those individuals who are looking to lose weight and lower body fat for reasons addressed in my Understanding EPOC article.

With that said, I'm also convinced that HIIT is often incorrectly performed as I hear over and over again from individuals that they perform HIIT for 45 - 60 minutes at a time. That implies that the exercise is not being performed to HIIT standards.

Let's take a look at several HIIT protocols:
  • 1 minute on, 1 - 2 minutes off, repeat 6 times
  • 30 seconds on, 90 seconds off, repeat 6 times
  • 45 seconds on, 90 seconds off, repeat 6 times
  • 20 seconds on, 40 seconds off, repeat 8 times
Note: Make sure to include a 5 minute warm-up and a 5 minute cool-down.

Notice that each protocol includes an "on" and "off" segment. These segments refer to intensity of effort and to correctly perform HIIT, during an "on" period you should be sprinting (or cycling, rowing, et al) at such an intensity that you reach a point of 'failure'. That is, you can simply no longer sprint (cycle, or row). You need to slow the rate of exercise to the "off" segment, which is your recovery period.

If done correctly, you will find that you will be hard-pressed to go beyond 20 to 25 minutes. Also keep in mind that as with any form of exercise, as your body adapts you will need to find ways to increase intensity to maintain the same intensity of effort level. This may mean increasing speed, include, and/or resistance.

Train hard; stay strong.

Peace.

Susan

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5 Responses to "A Word About HIIT And Training Intensity"
  1. SmoketheBlowfish said...
    April 27, 2009 11:28 AM

    Anyone with the ability to do 45-60 minutes of HIIT is definitely "not" doing a session with high intensity. I have a love-hate relationship with intervals...I love the results but hate doing them. I suppose this is better than my relationship with LBC (long boring cardio) where I was bored to death, didn't drop bodyfat, and was extremely hungry afterwards (a not-so-nice "benefit" of an hour on the treadmill).

    excellent post

  2. Fred said...
    April 27, 2009 1:19 PM

    Nice post, Susan!

    It always makes me smile when someone writes/blogs that they did a lengthy HIIT session (more than 30 minutes or so)...obviously, they're not 'hitting' it intensely enough.

    Thanks!!!

    F.

  3. Susan said...
    April 27, 2009 4:19 PM

    Smoke, the LBC comment is great! Love it :)

    Fred, some of the postings on that site really do make me smile!!!

  4. Anna said...
    April 28, 2009 6:55 PM

    I can't imagine anyone doing HIIT for 30-60 minutes :)

    After 15 minutes of intervals, I am totally smoked...haha. That is one sign that you're doing HIIT correctly. Another sign would be feeling "flushed" after it.

    I'm with Mike, I also have a love hate relationship with intervals so when I don't feel like do these with KB swings instead - just to add some variety.

    Nice post!

  5. Susan said...
    April 28, 2009 10:52 PM

    Thank you Anna! I had to go off intervals for a month while I did a mass building program and I have to admit -- I went through interval withdrawal :)

 

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