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.
There are platforms at various depths, ranging from -1.3 metres, to -12 metres, before the walls of the pool narrow into a well-like funnel which plunges straight down to -40 metres. Divers can wear simple swimming costumes with their oxygen tanks, as the water is maintained at a temperature around 32-34Â°C.