* Announcement of the rule came just days before a study, presented to the American Orthopaedic Society for Sports Medicine meeting in San Francisco, found that making sure that football helmets fit properly, and that those with air bladder linings are properly inflated, may be two of the simplest but most effective ways to minimize the risk of concussion and catastrophic brain injury in the sport. (momsteam.com)
Underneath, the LR4 offers a fully independent suspension at either end, sprung and damped by air bladders that offer long suspension travel, and either automatic or manual height adjustment. (bestride.com)
Unlike other fish, which inflate air bladders to adjust their buoyancy on the fly, sharks rely on a skeleton of cartilage and a liver filled with lighter - than - water oil to help beat gravity's pull. (sciencemag.org)