It appears that some dubious marketing tools are being employed in the sale of the Power Balance wrist band.
First is the use of celebrity endorsement. This practice is unfortunately all too common. Celebrities don’t appear to be any better at critical thinking than your average Joe (or Jo) in the street.
The second dubious practice is the use of physical tests that aren’t objective. The method of pressing down on someone’s arm to test muscle strength can easily be manipulated (either deliberately or mistakenly) by the person doing the pressing. This methodology has been around for quite some time and is known as “Applied Kinesiology”. This is rather difficult to describe in writing. Fortunately Richard Saunders has put together an excellent video that shows you everything you need to know.
Now, check out this uncritical video review of the Power Balance wrist band. In this video a representative of Power Balance gets plenty of opportunity to speak and demonstrate the product.
Then another short video from Richard Saunders:
James Randi, as usual, is way ahead of his time:
Good grief! Rat poison is almost as deadly to people as it is to rats. I can’t believe the Kineisiologist said that.
You’d think everyone would know by now the arm test routine isn’t an objective test. Weight lifters and scientists know that the best method of testing muscle strength is to lift weights that are close to your limit of being able to actually lift and count how many times you can do it until you’re simply unable due to muscle exhaustion.
If the people behind the Power Balance wrist band think I’ve been overly critical I welcome your comment below. You’re also welcome to write a more lengthy reply which I can post here.