July 19th, 2011
07:51 AM ET

Scientist: Tae Bo workout sent skyscraper shaking

Seventeen people performing a vigorous Tae Bo workout caused tremors that forced the evacuation of a South Korean skyscraper earlier this month, the building's owners say.

Prime Group, owner of the 39-story TechnoMart commercial-residential high-rise in Seoul, said 17 middle-aged people were working out to the pop song "The Power" by Snap on July 5 when their movements set the upper floors of the tower shaking for 10 minutes, according to a report from the Korea JoongAng Daily.

Scientists recreated the event in the 12th floor gym, according to a report in the Korea Times.

“We observed the vibrometer while performing the same kind of aerobic exercise that was performed at the time of the shaking which occurred on July 5. We noticed that the shaking was felt in the upper floors while the exercise was being performed while no other place showed signs of tremor,” Chung Lan, a professor of architectural engineering at Dankook University, told the Korea Times.

“It just happens to be that the vibration cycle caused by Tae Bo collided with the vertical vibration cycle unique to the building,” Chung told the Korea Times. The action amplified the building's vibration and caused the shaking, he said.

Chung was one of six professors from the Architectural Institute of Korea who inspected the building and recreated the Tae Bo exercise.

Tae Bo is a mixture of boxing and tae kwon do.

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Filed under: South Korea • World
soundoff (322 Responses)
  1. Scottish Mama

    Lol lol lol People will clammer to work in that building. It's gonna shake, rattle, and roll!

    July 19, 2011 at 8:12 am | Report abuse |
  2. Joey Isotta-Fraschini


    July 19, 2011 at 8:13 am | Report abuse |
  3. Joey Isotta-Fraschini

    I did free weights for chest and back today at the gym. I have an injured knee, and at one point a little old lady told me, "pick up the pace!"

    July 19, 2011 at 8:34 am | Report abuse |
    • Scottish Mama

      Sign her up as your new trainer. lol You know your not cutting it when the little ole lady approaches.

      July 19, 2011 at 8:42 am | Report abuse |
    • U-Turn

      It was Chuck Norris' mom!

      July 19, 2011 at 8:56 am | Report abuse |

      Betty White??

      July 19, 2011 at 11:10 am | Report abuse |
    • Peter Goesinya

      Who gives a crap.

      July 19, 2011 at 1:39 pm | Report abuse |
  4. U-Turn

    Those had to have been some extremely FAT Koreans!

    July 19, 2011 at 8:55 am | Report abuse |
  5. Mad Ole Lady

    Sorry for the rush Joey. My geritol pills get me going and going and going. As slow as you were today maybe you should start taking geritol daily. Put some oomph in your workout.

    July 19, 2011 at 9:28 am | Report abuse |
    • U-Turn

      I hear tell that prunes provide the same effect for you elderly folk as well. 😛

      July 19, 2011 at 9:38 am | Report abuse |
  6. Scottish Mama

    Betty White is all over the place.

    July 19, 2011 at 10:14 am | Report abuse |
  7. Joey Isotta-Fraschini

    OK. I'll try prunes.

    July 19, 2011 at 10:36 am | Report abuse |
  8. des

    dang,the same fat to loocy loo!

    July 19, 2011 at 10:51 am | Report abuse |
  9. Paulina

    Ah, harmonic resonance...how you show up during the most inconvenient times...

    July 19, 2011 at 10:52 am | Report abuse |
  10. Canadian Genius

    Why won't my sarcastic comment post? Now I have to play the game of "which word does CNN find offensive?"

    July 19, 2011 at 10:55 am | Report abuse |
  11. Canadian Genius

    This is horrible! Why is CNN giving ideas to the terrorists on how to bring down a building?

    July 19, 2011 at 10:57 am | Report abuse |
    • Canadian Genius

      You can't say "skyscr4per"? Why?

      July 19, 2011 at 10:59 am | Report abuse |
    • Diane

      Now that's a silly word to call offensive – cr4p That's offensive to five year olds, maybe

      July 19, 2011 at 11:13 am | Report abuse |
  12. Joey Isotta-Fraschini

    Because it scares us down here.

    July 19, 2011 at 11:08 am | Report abuse |
  13. Joey Isotta-Fraschini

    Prunes aren't on my Atkins diet.
    I've decided to go for Hadacol.

    July 19, 2011 at 11:09 am | Report abuse |
  14. Diane

    And somewhere out there, the members of early nineties group Snap! are woo hooing that people might flock to iTunes for people wanting to shake rattle and roll their own buildings.

    July 19, 2011 at 11:15 am | Report abuse |
  15. Hades

    Was Chuck Norris the instructor?

    July 19, 2011 at 11:17 am | Report abuse |
    • Kim

      cnn needs a "like" button

      July 19, 2011 at 11:24 am | Report abuse |
    • mcman1hm

      No, if he was, the buidling would have fallen down

      July 19, 2011 at 11:25 am | Report abuse |
    • GEB


      July 19, 2011 at 11:39 am | Report abuse |
    • S

      He was too busy doing Tae Bo on your mom

      July 19, 2011 at 11:45 am | Report abuse |
    • FauxNews

      No he wasn't, it said "middle-aged people"

      July 19, 2011 at 11:47 am | Report abuse |
    • Kevin Logan

      Duh who else could have done this?

      July 19, 2011 at 11:56 am | Report abuse |
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