"Creatine content" refers to the amount of creatine, a natural substance found in our muscles and brain, present in something like food, supplements, or body tissues. Full definition
However, taking it as a dietary supplement can increase muscle creatine content by up to 40 % beyond its normal levels (4, 5, 6). (healthline.com)
Studies subsequent to the one performed in 1992 confirmed that increased creatine content in muscles correlated with an increased muscle productivity. (shapesense.com)
The total creatine content of the quadriceps femoris muscle was measured in 17 subjects and they found a significant increase after supplementation. (getthisstrength.com)