Energy Systems. Lesson Aims Analyse & understand how ATP works? Understand how ATP is resynthesized for muscular contractions. Energy & ATP. All body systems require energy to perform work. Energy = Capacity of the body to perform work. (Calories (ckal) or Joules)
Analyse & understand how ATP works?
Understand how ATP is resynthesized for muscular contractions.
(Calories (ckal) or Joules)
1Calorie = 4.184 joules
Adenosine triphosphate (ATP) - The basic source of energy for muscle contraction.
ATP is a molecule composed of Adenosine attached to 3 phosphate.
PHOSPHOCREATINE (PCr) SPLITTING
tissue (sarcoplasm) and is broken down by
enzyme creatine kinase into creatine.
phosphates (Pi) resulting from the breakdown
of ATP into ADP + Pi + energy
Thus, the energy from the phosphagen system is used for maximal short bursts of power.
For example – 100m sprint
For example - 400/800m
- 100m freestyle (swimming)