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.
What is the furthest you have gone under the water with a single breath? 15 feet? 20 feet? 30 feet? For our guest today, Herbert Nitsch, the answer is 830 feet. Herbert Nitsch is the current free diving world record holder and âthe deepest man on earth. He holds 33 world records in all free diving disciplines - an unrivaled feat to date - which range from using weights and flotation to assist to no assistance at all.