A CK-MB test may be used as a follow-up test to an elevated CK in order to determine whether the increase is due to heart damage or skeletal muscle damage.
Scuba organizations say recreational divers shouldn't go below about 130 feet, but one Egyptian diver recently ventured a bit deeper -- going more than 1,000 feet below the ocean surface and setting a world record in the process.
Scuba diving offers people the opportunity to see what life is like below the water in lakes and oceans. The word scuba is an acronym for self contained underwater breathing apparatus, and divers wear equipment that allows them to stay below the water's surface for long periods of time. The majority of people enjoy diving for recreational purposes, to see the beauty that lives in the ocean waters.