Nike Free

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Sole of a running shoe utilising Nike Free technology

Nike Free is technology developed by Nike, Inc. and Gerard Hartmann and incorporated into some of their athletic shoes. Nike Free simulates barefoot running [1] while wearing a shoe.[2]

As this shoe allows the muscles in the foot to gain strength by providing less constriction, runners are advised to gradually break into the shoe rather than immediately running long distances as to prevent muscle cramps and other discomforts.[3]

In 2006 Nike released a new version of the shoe, the Nike Free V2, that addressed some of the durability issues in the earlier model. Among other changes, the heel and sidewalls of the shoe were redesigned to prevent tearing.

In 2007, Nike released a 3rd edition of the shoe, Nike Free V3, which is an update to the V2.

In 2009, Nike released a 4th edition of the shoe, Nike Free V4, which is an update to the V3.

Contents

[edit] About the Nike scale

The Nike shoe scale goes from 10.0 to 3.0 with a '10' being a fully supportive shoe, and '0' being completely barefoot.[4]

Example: The 5.0 Nike Free is like running halfway barefoot, the 3.0 is even less shoe, and the 7.0 is a bit more supportive.

[edit] Versions of the Nike Free

  • Nike Men/Women Free Everyday (running)
  • Nike Men/Women Free 7.0 (running)
  • Nike Men/Women Free 7.0 Trainer (cross training)
  • Nike Men/Women Free 5.0 (running)
  • Nike Men/Women Free Trainer 5.0 (cross training)
  • Nike Men/Women Free Trail 5.0 (light trail running)
  • Nike Men/Women Free 5.0 v2 (running)
  • Nike Men/Women Free 5.0 v3 (running)
  • Nike Men/Women Free Trainer 5.0 v2 (cross training)
  • Nike Men/Women Free 4.0 (running)
  • Nike Men/Women Free 4.0 Trainer (cross training)
  • Nike Men/Women Free 3.0 (running)

[edit] References

  1. ^ "Barefoot Running - Nike Free". Faze Magazine. http://www.fazeteen.com/winter2004/nikefree.htm. Retrieved on 2009-03-01. 
  2. ^ "Review of Nike Free Technology". American Track & Field. http://web.archive.org/web/20071213160847/http://www.american-trackandfield.com/features/nikefreereview04.html. Retrieved on 2009-03-01. 
  3. ^ "Review of Nike Free 5.0 at The Final Sprint". The Final Sprint, LLC. http://www.thefinalsprint.com/2006/10/nike-free-50-trainers-gimmick-or-running-shoe-breakthrough/. Retrieved on 2008-09-24. 
  4. ^ "Nike Free Web Site". Nike. http://www.nike.com/nikefree/usa/index.jhtml. Retrieved on 2007-09-09. 

[edit] External links

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