Creatine kinase is a substance found in the blood when muscle injury has occurred. When muscle tissue gets damaged, it leaks into the blood. Creatine kinase levels are analyzed by conducting a normal blood test on an individual. A creatine kinase test takes just a few seconds as blood is drawn from a vein in the upper forearm. This test poses minimal risks to the patient as it simply involves a tiny puncture which is usually covered immediately with an adhesive tape. This adhesive tape seeks to prevent any infection from infiltrating the site. It also ensures that there is no excess bleeding from the site, something that may happen if the vein is improperly punctured. There is a relationship between creatine kinase levels and exercise. A creatine kinase test after exercise will show elevated levels of creatine kinase. This is why subjects who are due to have a creatine kinase test for diagnostic purposes are told not to exercise for up to 6 hours before the test is conducted.
The creatine kinase levels after workout are often a source of confusion. There are several variables that affect the creatine kinase levels after fitness workout. Creatine kinase elevation is associated with muscle damage. With that being the case, the amount of muscle damage suffered by an individual is relevant. A person who is untrained and unfit will display higher creatine kinase levels after exercise whereas the same individual on the same exercise routine may display lower creatine kinase after exercise once a fair amount of physical fitness has been achieved. There are also variations associated with the type of exercise that is being undertaken. Exercise that involves weight lifting and downhill running are considered to cause a higher elevation of creatine kinase than other types of exercises. Factors such as temperature and vibration also affect the level of creatine kinase. See also creatine kinase normal range
What can be therefore understood from all this is the fact that the level of creatine kinase does indeed rise after strenuous exercise done over a period of time. This rise is because the muscles are either damaged or tend to be overstressed, leading to them leaking some creatine kinase into the blood. What is unclear is the exact rate at which creatine kinase is deposited in the blood. This is because of the numerous variations present in the exercise routines and the changing fitness levels of the concerned individual.More articles from the Blood Tests Category