Attenuation of Sound Waves. When sound travels through a medium, its intensity diminishes with distance. In idealized materials, sound pressure (signal amplitude) is only reduced by the spreading of the wave. Natural materials, however, all produce an effect which further weakens the sound.
There is no established dose. Many different dosages of creatine supplements have been used in studies. For athletic performance, some people start with 10 grams to 30 grams of creatine a day. This is followed by a maintenance dose of 2 grams to 5 grams of creatine a day. Natural food sources of creatine include meat, poultry, and fish.
Creatine in Meat. Meat is one of the primary sources of creatine. Beef has about 5 grams of creatine for every 2.5 pounds of meat, according to Iowa State University Extension. Youâll also get about the same amount from pork. Since 2.5 pounds of meat is enough for 13 servings, one 3-ounce serving of beef has about 0.4 gram of creatine. As a general guideline, any type of uncooked muscle meat has 3 grams to 6 grams of creatine per 2.5 pounds of meat.