16 Questions
What is a major cause of fatigue in short explosive events, such as a 100m sprint?
PC depletion
What is the purpose of active recovery in the anaerobic glycolysis system?
To promote oxygen distribution to muscles, aiding in byproduct removal
What is the result of glycogen depletion in the aerobic energy system?
Fatigue when muscles rely on fat as a fuel source
What is the recommended way to replenish fluids after a long-duration event?
Drink 1.5 times the amount of body weight lost
How long does it take to completely replenish PC stores in the ATP-PC system?
10 minutes
What is the purpose of passive recovery in the ATP-PC system?
To replenish PC stores
Which energy system is primarily used in events lasting longer than 10 seconds?
Anaerobic Glycolysis System
What is the role of hydrogen ions in anaerobic glycolysis?
They are responsible for fatigue
What is the effect of dehydration on the body during aerobic exercise?
It thickens blood, making it harder for the heart to pump
What is the purpose of rest and stretching in aerobic energy system recovery?
To aid in recovery
What type of carbohydrates are recommended for refueling after aerobic exercise?
High-GI carbohydrates
What is the effect of increased core body temperature on enzyme function?
It impairs enzyme function
How does low-intensity passive recovery affect PC stores?
It replenishes 70% of PC stores in 30 seconds and 98% in 3 minutes
What is the primary cause of fatigue in the aerobic energy system?
All of the above
What is the purpose of active recovery in removing metabolic byproducts?
It promotes oxygen distribution to muscles, aiding in byproduct removal
How much fluid should be consumed to replenish fluids after a long-duration event?
1.5 times the amount of body weight lost
Study Notes
Fatigue and Recovery
- Fatigue is a limiting factor in performance, not just feeling tired
- Fatigue depends on the energy systems used, duration, and intensity of events
ATP-PC System
- In short explosive events (e.g., 100m sprint), PC depletion is a major cause of fatigue
- PC stores are limited (~10 seconds) and depletion slows down performance
- Inorganic phosphate accumulation reduces contraction power, leading to fatigue
Recovery for ATP-PC System
- Passive recovery is ideal for replenishing PC stores
- Low-intensity passive recovery can replenish 70% of PC stores in 30 seconds and 98% in 3 minutes
- Complete replenishment takes around 10 minutes
Anaerobic Glycolysis System
- In longer high-intensity events (e.g., 400m sprint), anaerobic glycolysis is a major cause of fatigue
- Metabolic byproducts (e.g., lactic acid) accumulate and lead to fatigue
- Hydrogen ions from lactic acid are responsible for fatigue
- An active recovery is best for removing metabolic byproducts
Recovery for Anaerobic Glycolysis System
- Active recovery helps remove metabolic byproducts
- Low-intensity activity (e.g., jogging or cycling) promotes oxygen distribution to muscles, aiding in byproduct removal
- Increased oxygen supply helps convert lactate back into glucose, reducing fatigue
Aerobic Energy System
- In long-duration events (e.g., marathons), fatigue occurs due to glycogen depletion, dehydration, and increased core body temperature
- Glycogen depletion leads to fatigue when muscles rely on fat as a fuel source
- Dehydration thickens blood, making it harder for the heart to pump, leading to fatigue
- Increased core body temperature impairs enzyme function, leading to fatigue
Recovery for Aerobic Energy System
- Refuel with high-GI carbohydrates to replenish glycogen stores
- Hydrate with 1.5 times the amount of body weight lost to replenish fluids
- Rest and stretching can aid in recovery
Fatigue and Recovery
- Fatigue is a limiting factor in performance, not just feeling tired
- Fatigue depends on the energy systems used, duration, and intensity of events
ATP-PC System
- In short explosive events, PC depletion is a major cause of fatigue
- PC stores are limited (~10 seconds) and depletion slows down performance
- Inorganic phosphate accumulation reduces contraction power, leading to fatigue
- Passive recovery is ideal for replenishing PC stores
- Low-intensity passive recovery can replenish 70% of PC stores in 30 seconds and 98% in 3 minutes
- Complete replenishment of PC stores takes around 10 minutes
Anaerobic Glycolysis System
- In longer high-intensity events, anaerobic glycolysis is a major cause of fatigue
- Metabolic byproducts (e.g., lactic acid) accumulate and lead to fatigue
- Hydrogen ions from lactic acid are responsible for fatigue
- Active recovery is best for removing metabolic byproducts
- Active recovery helps remove metabolic byproducts
- Low-intensity activity (e.g., jogging or cycling) promotes oxygen distribution to muscles, aiding in byproduct removal
- Increased oxygen supply helps convert lactate back into glucose, reducing fatigue
Aerobic Energy System
- In long-duration events, fatigue occurs due to glycogen depletion, dehydration, and increased core body temperature
- Glycogen depletion leads to fatigue when muscles rely on fat as a fuel source
- Dehydration thickens blood, making it harder for the heart to pump, leading to fatigue
- Increased core body temperature impairs enzyme function, leading to fatigue
- Refuel with high-GI carbohydrates to replenish glycogen stores
- Hydrate with 1.5 times the amount of body weight lost to replenish fluids
- Rest and stretching can aid in recovery
Fatigue and Recovery
- Fatigue is a limiting factor in performance, not just feeling tired
- Fatigue depends on the energy systems used, duration, and intensity of events
ATP-PC System
- In short explosive events, PC depletion is a major cause of fatigue
- PC stores are limited (~10 seconds) and depletion slows down performance
- Inorganic phosphate accumulation reduces contraction power, leading to fatigue
- Passive recovery is ideal for replenishing PC stores
- Low-intensity passive recovery can replenish 70% of PC stores in 30 seconds and 98% in 3 minutes
- Complete replenishment of PC stores takes around 10 minutes
Anaerobic Glycolysis System
- In longer high-intensity events, anaerobic glycolysis is a major cause of fatigue
- Metabolic byproducts (e.g., lactic acid) accumulate and lead to fatigue
- Hydrogen ions from lactic acid are responsible for fatigue
- Active recovery is best for removing metabolic byproducts
- Active recovery helps remove metabolic byproducts
- Low-intensity activity (e.g., jogging or cycling) promotes oxygen distribution to muscles, aiding in byproduct removal
- Increased oxygen supply helps convert lactate back into glucose, reducing fatigue
Aerobic Energy System
- In long-duration events, fatigue occurs due to glycogen depletion, dehydration, and increased core body temperature
- Glycogen depletion leads to fatigue when muscles rely on fat as a fuel source
- Dehydration thickens blood, making it harder for the heart to pump, leading to fatigue
- Increased core body temperature impairs enzyme function, leading to fatigue
- Refuel with high-GI carbohydrates to replenish glycogen stores
- Hydrate with 1.5 times the amount of body weight lost to replenish fluids
- Rest and stretching can aid in recovery
Explore how fatigue affects athletic performance, including the role of energy systems and recovery strategies in sports. Understand the causes of fatigue and how to alleviate it for optimal performance.
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