Podcast
Questions and Answers
Which energy system accounts for 99% of energy production throughout your life?
Which energy system accounts for 99% of energy production throughout your life?
Which energy system has the highest capacity/duration?
Which energy system has the highest capacity/duration?
Which energy system has the lowest inertia?
Which energy system has the lowest inertia?
Which energy system has the highest rate/power of ATP production?
Which energy system has the highest rate/power of ATP production?
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Which energy system fatigues very quickly?
Which energy system fatigues very quickly?
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Which energy system has the slowest recovery time?
Which energy system has the slowest recovery time?
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Which energy system uses glucose as its substrate?
Which energy system uses glucose as its substrate?
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Which energy system uses mostly carbs and fats, with some proteins, as its substrate?
Which energy system uses mostly carbs and fats, with some proteins, as its substrate?
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Which energy system has a predominance depending on the workout?
Which energy system has a predominance depending on the workout?
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Which energy system is always functioning?
Which energy system is always functioning?
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Which system provides the majority of energy throughout your life?
Which system provides the majority of energy throughout your life?
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What type of exercise affects the anaerobic system?
What type of exercise affects the anaerobic system?
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What type of exercise affects the aerobic system?
What type of exercise affects the aerobic system?
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Which molecule acts as an energy buffer and helps maintain ATP levels?
Which molecule acts as an energy buffer and helps maintain ATP levels?
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Which enzyme catalyzes the breakdown of PCr?
Which enzyme catalyzes the breakdown of PCr?
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What is the end product of glycolysis?
What is the end product of glycolysis?
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What is the main function of the creatine-phosphate shuttle?
What is the main function of the creatine-phosphate shuttle?
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What happens to PCr levels during exercise?
What happens to PCr levels during exercise?
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What is the role of adenylate kinase in ATP production?
What is the role of adenylate kinase in ATP production?
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What is the purpose of the shuttle system in ATP production?
What is the purpose of the shuttle system in ATP production?
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Which enzyme is responsible for converting pyruvate into lactate?
Which enzyme is responsible for converting pyruvate into lactate?
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Which fiber type is more predominant in slow twitch muscle fibers?
Which fiber type is more predominant in slow twitch muscle fibers?
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Which fiber type is more predominant in fast twitch muscle fibers?
Which fiber type is more predominant in fast twitch muscle fibers?
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What is the primary source of lactate production during muscle contraction?
What is the primary source of lactate production during muscle contraction?
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Which system is primarily used during anaerobiosis?
Which system is primarily used during anaerobiosis?
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What is the primary method of lactate removal?
What is the primary method of lactate removal?
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Which factor leads to increased lactate production in type 2 muscle fibers?
Which factor leads to increased lactate production in type 2 muscle fibers?
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Which factor leads to decreased lactate production in type 1 muscle fibers?
Which factor leads to decreased lactate production in type 1 muscle fibers?
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What is the approximate concentration of lactate in the blood?
What is the approximate concentration of lactate in the blood?
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Which enzyme is responsible for converting lactate into pyruvate?
Which enzyme is responsible for converting lactate into pyruvate?
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Study Notes
Energy Systems
- The aerobic system accounts for 99% of energy production throughout your life.
- The aerobic system has the highest capacity and duration.
- The ATP-PC system has the lowest inertia.
- The ATP-PC system has the highest rate/power of ATP production.
- The ATP-PC system fatigues very quickly.
- The ATP-PC system has the slowest recovery time.
Energy System Substrates
- The ATP-PC system uses phosphocreatine (PCr) as its substrate.
- The anaerobic glycolytic system uses glucose as its substrate.
- The oxidative system uses mostly carbs and fats, with some proteins, as its substrate.
Energy System Function
- The aerobic system is always functioning.
- The aerobic system provides the majority of energy throughout your life.
- The anaerobic system is affected by high-intensity, short-duration exercises.
- The aerobic system is affected by low-intensity, long-duration exercises.
Energy Buffer and ATP Production
- Creatine phosphate acts as an energy buffer and helps maintain ATP levels.
- The enzyme creatine kinase catalyzes the breakdown of PCr.
- The end product of glycolysis is pyruvate.
- The main function of the creatine-phosphate shuttle is to rapidly replenish ATP.
ATP Production and Lactate
- PCr levels decrease during exercise.
- Adenylate kinase plays a role in ATP production by reversibly catalyzing the reaction of 2ADP to ATP and ADP.
- The purpose of the shuttle system is to rapidly replenish ATP during high-intensity exercises.
- The enzyme lactate dehydrogenase is responsible for converting pyruvate into lactate.
- Type 1 muscle fibers are more predominant in slow twitch muscle fibers.
- Type 2 muscle fibers are more predominant in fast twitch muscle fibers.
- The primary source of lactate production during muscle contraction is the anaerobic glycolytic system.
Lactate Production and Removal
- The anaerobic system is primarily used during anaerobiosis.
- The primary method of lactate removal is through the oxidation of lactate in the heart, liver, and kidneys.
- Type 2 muscle fibers lead to increased lactate production due to their high glycolytic capacity.
- Type 1 muscle fibers lead to decreased lactate production due to their high oxidative capacity.
- The approximate concentration of lactate in the blood is 1-2 mmol/L.
- The enzyme lactate dehydrogenase is responsible for converting lactate into pyruvate.
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Description
Test your knowledge on anaerobic and aerobic metabolism with this quiz. Learn about the different energy systems involved and how they are utilized during workouts. Discover the importance of switching between systems based on the type of exercise.
