The energy used during muscle contraction is derived from ATP

There are several processes involved during muscle contraction. It is worth noting that muscle contraction requires huge ATP energy supplies. The energy used during muscle contraction is derived from ATP. ATP molecules are derived from fatty acids and glucose metabolism. It is imperative to note that minimal amounts of ATP are kept in the muscles. This implies that several twitches have the ability of exhausting the supplies within minutes.

Obviously, the muscles have to possess alternative ways of curbing the limitation (Goldstein, 2010). Minimal amounts of ATP are usually stored in the skeletal muscles. In addition, creatine phosphate is kept in the muscles. Creatine phosphate is formed from a combination of creatine and phosphate group. It does not provide direct energy required for muscle contraction. However, creatine phosphate can donate the phosphate group to the ADP, which results to ATP.

The resultant ATP is used as a direct energy source during muscle contraction. There are sufficient creatine phosphate stores in the muscles, which allows for strong contractions. Later, cellular respiration and glycolysis are used to provide additional energy. The oxidation of fatty acids and glucose provides energy to the muscles when more energy is necessary