Silicone bracelet is the energy balance to help NBA players in it?

In the NBA, we always see the full energy of the stars running on the playground. Like O'Neill, he has 39 years old, and also full of vitality. In order to maintain the adversarial nature of the body, they work hard every day to exercise. However, we always see such phenomenon, such as Shaquille O'Neal, Kobe Bryant, Paul Pierce, Lamar Odom and others, they bring fashion power balance bracelet. Is power balance bracelet to help them so energy?
Through access to information, I found that the power balance bracelet added in the production process of titanium and germanium, according to research that titanium and germanium are good for our health. Perhaps the power balance bracelet are not as the effective of advertising, but as a sport accessories, with it, and not feel ugly. Why do not you wear it?