ATP Resynthesis During Exercise

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Created by
Isabella Smithson

Cards (22)

  • Energy Continuum: the relative contribution of each energy system to overall energy production depending on intensity and duration of the activity.
  • If the exercise is extremely high intensity the ATP system is used.
  • If the exercise is very high intensity the ATP-PC system is used.
  • If the intensity is high the glycolytic system is used
  • If the intensity is low the aerobic system is used
  • If the duration is 2-3 seconds the ATP store is used
  • If the duration is less than 10 seconds the ATP-PC system is used
  • If the duration is 10s-3mins the glycolytic system is used
  • If the duration is longer than 3 minutes the aerobic system is used
  • The point at which one energy system takes over as the prodominant energy system for energy production is called the energy system threshold
  • If oxygen available the aerobic energy system is used
  • If oxygen is not available the anaerobic systems are used
  • At high intensity exercise, if phosphocreatine is available the ATP-PC system will be used
  • At high intensity exercise, if phosphocreatine isn't available the glycolytic system will be used.
  • Factors that affect which energy system is used are: exercise intensity; exercise duration; energy system thresholds; oxygen availability; fuel availability; enzyme action; fitness level; position of the player; tactics; level of competition; and structure of the game.
  • As ATP decreases, ADP increases which releases creatine kinase which will use the ATP PC system.
  • As PC decreases, ADP increases, ATP increases, phosphofructokinase is released meaning the glycolytic system is used.
  • After PFK released, the glycolytic system is used, once oxygen arrives Coenzyme A is used as the predominant energy system becomes the aerobic energy sytem.
  • A non trained performer will hit OBLA earlier and work aerobically.
  • Trained performers work aerobically at higher intensities. They can also use FFA's due to the extra oxygen
  • The ATP-PC / glycolytic threshold is the point at which the ATP-PC energy system is exhausted and the glycolytic system takes over, occurs at approximately 10 seconds.
  • The glycolytic / aerobic threshold is the point at which the glycolytic energy system is exhausted and the aerobic system takes over, occurs at approximately 3 minutes