Normal levels of creatinine in the blood are approximately 0.6 to 1.2 milligrams (mg) per deciliter (dL) in adult males and 0.5 to 1.1 milligrams per deciliter in adult females. Muscular young or middle-aged adults may have more creatinine in their blood than the norm for the general population.
Fiber Types and Skeletal Muscle Hypertrophy The force generated by a muscle is dependent on its size and the muscle fiber type composition. Skeletal muscle fibers are classified into two major categories; slow-twitch (Type 1) and fast-twitch fibers (Type II).
1 Names of major muscle groups. 2  Actions of major muscles (use textbook). 3  You need to be able to: 4  Explain the immediate and long term effects of exercise on the muscular system. 5  Describe potential injuries to the muscular system. 6  Understand how diet, rest and drugs can impact on the muscular system. Actions of major muscles (use textbook). 2  You need to be able to: 3  Explain the immediate and long term effects of exercise on the muscular system. 4  Describe potential injuries to the muscular system. 5  Understand how diet, rest and drugs can impact on the muscular system. 6  Names of major muscle groups.