Wondering about those baseball players' necklaces?

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New York Yankees' A.J. Burnett is seen in the dugout Game 5 of the American League Championship baseball series against the Los Angeles Angels Thursday, Oct. 22, 2009, in Anaheim, Calif. The thicker, rope-like necklace is a Phiten titanium necklace, which some players believe helps ward off fatigue, though there's no scientific proof behind the claim. (AP Photo/Chris Carlson)

Baseball players may have another lucky charm.
Phiten titanium necklaces, a new accessory trend, popular among some Major League Baseball players, may help to avoid fatigue and sore muscles. The necklaces are reputed to regulate the flow of energy throughout a body.
This efficient use of a body’s energy helps athletes tire less and recover quicker from strenuous exercise, according to the Phiten USA store’s Web site.
“Baseball players buy them like they are going out of style,” said Chris Miller, assistant manager of the West Side Hibbett’s Sports store. Hibbett’s sells necklaces, bracelets and shooting sleeves infused with titanium. The items range in price from $12 to $35.
Products with a higher concentration of titanium are available, but can become as expensive as $100 for a necklace. Many professional baseball players swear by them according to Phiten USA’s Web site, even though both doctors and scientists alike claim there is no proof.
The necklaces have garnered attention during the playoffs, as they've been worn by New York Yankees A.J. Burnett, Nick Swisher and Joba Chamberlain, among others.
Unlike other metal accessories with reported similar properties, titanium works not with magnets, but ions. Negative ions are believed to enhance mood and help battle depression, according to Web MD site.
Miller compared the sensation after wearing the necklace as similar to having vapor rub on your skin.
“It’s a very subtle difference, you’ll notice it more when you’re not wearing it,” Miller said.
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