Our body uses three energy systems to produce ATP –aerobic, anaerobic glycolysis and ATP-CP. They produce ATP at different rates and have different capacities as shown in the table below. Which of the following correctly identifies each of the three energy systems? A.X = ATP-CP Y = anaerobic glycolysis Z = aerobic
The document discusses three energy systems that the body uses to produce ATP for muscle contraction and movement. The ATP-PC or alactic system uses phosphocreatine to rapidly resynthesize ATP for high-intensity bursts lasting 3-10 seconds.
The ATP–CP system (also known as the Phosphagen system or the ATP-PCr system) is the least complex of the three major energy producing systems and uses creatine phosphate (CP) as the fuel for ATP production. In general, the
The ATP-PC energy system provides immediate energy for intense but short bursts of exercise lasting 10-15 seconds by breaking down ATP and phosphocreatine (PC) stores in the muscles. ATP is used for muscle contraction and is replenished when PC is broken down by creatine kinase, releasing energy to rejoin ADP and phosphate and reform ATP.
Used predominantly when body at rest and during lower intensity exercise (up to about 50-65% of maximum oxygen uptake). Proteins- only in extreme circumstances such as starvation or ultra endurance events. Slowest system to provide energy for ATP resynthesis due to complex nature of its chemical reactions, and the fact that sufficient oxygen
Energy Sources/Fuels Used The main fuels for the ATP-PC system are phosphocreatine (PC) and adenosine triphosphate (ATP), stored in muscle cells. These compounds rapidly regenerate energy during short, high-intensity efforts. Amount of
Used predominantly when body at rest and during lower intensity exercise (up to about 50-65% of maximum oxygen uptake). Proteins- only in extreme circumstances such as starvation or ultra endurance events. Slowest system
The ATP–CP system (also known as the Phosphagen system or the ATP-PCr system) is the least complex of the three major energy producing systems and uses creatine phosphate (CP) as the fuel for ATP production. In general, the less complex the system, the fewer chemical reactions must take place so ATP can be produced faster.
Initially, these sources are found within the muscles, such as ATP-PC (the phosphagen system) and the anaerobic glycolysis system, which do not need oxygen to produce ATP. Another way to produce ATP is through the aerobic system, which does require oxygen.
The energy systems are responsible for providing the energy to resynthesise ATP from ADP and Pi. The ATP-CP system produces energy by breaking down the chemical fuel Creatine Phosphate. Energy is produced at an explosive rate due to the simple anaerobic chemical reactions that take place.
To develop this energy system, sessions involving repeats of up to 10-15 seconds of maximum intensity activity/work are required, with approximately two minutes rest between repeats to allow the system to replenish. There is a more scientific formula for rest periods called the ‘work to rest ratio’. For the ATP-PC system the rest ratio is 1:10/12.
The muscles only store around 10 seconds worth of PC so any physical activity that involves quick, short bursts of energy, makes heavy use of the ATP-PC system. It takes around two minutes for the body to replenish its PC stores. Are you a visual learner!
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