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  • What is the energy source for muscle contraction?

  • Skeletal muscle energy metabolism and fatigue during intense exercise in man Adenosine triphosphate (ATP) is the sole fuel for muscle contraction. During near maximal intense exercise the muscle store of ATP will be depleted in 1s, therefore, to maintain normal contractile function ATP must be continually resynthesized.

  • What is the energy system of muscle cells?

  • Muscle Energy Systems. To continue working, muscle cells must replenish their ATP supply. All muscle cells contain a high-energy compound, creatine phosphate, which is quickly broken down to make ATP. Because stores of creatine phosphate are also limited, this energy system can only sustain maximal muscle output for about 10 seconds.

  • How do your muscles work?

  • How your muscles work: The energy systems used during exercise. It is ATP that energizes our bodily processes, from cell development to explosive muscle contractions. The largest volume of ATP is produced in the presence of oxygen, which is why our breathing rate increases dramatically when we exercise.

  • What is the fuel for muscle cells?

  • ATP: The only fuel for muscles ATP is an energy carrying molecule that consists of adenosine and three phosphate groups. To prevent the energy of ATP from dissipating and being wasted as heat, the energy is only released when it is hydrolyzed (split under the use of water) by enzymes called ATPases.

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