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.
Consider Fiberglass Pool Depth. The depth of a fiberglass pool dictates the depth of its hole. In addition to digging this far, the homeowner must continue to dig for the sake of adding sand or rock. It is also inadvisable and dangerous to use a diving board in pools shallower than 8 feet.