Protein Balance and Anabolic Effects of Insulin in Athletes
80 Questions
2 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to Lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which of the following factors make up total daily energy expenditure?

  • Protein consumption, vitamin intake, water consumption, fiber intake
  • Sleep duration, screen time, social media use, work stress
  • Basal energy expenditure, thermic effect of food, exercise activity thermogenesis, non-exercise activity thermogenesis (correct)
  • Carbohydrate intake, fat consumption, muscle mass, age

What does calorimetry measure?

  • Hormone secretion
  • Vitamin absorption
  • Blood sugar levels
  • Heat production (correct)

Which type of calorimetry is based on O2 consumption and CO2 production?

  • Infrared calorimetry
  • Indirect calorimetry (correct)
  • Direct calorimetry
  • Ultraviolet calorimetry

What are the major energy sources of carbohydrates?

<p>Glucose, fructose, galactose (C)</p> Signup and view all the answers

How does exercise impact glucose uptake?

<p>Causes GLUT-4 translocation, independent of insulin (B)</p> Signup and view all the answers

What is the primary difference between essential and non-essential nutrients?

<p>Essential nutrients come from food, while non-essential nutrients are produced by the body. (D)</p> Signup and view all the answers

According to the Physical Activity Guidelines for Americans, how many minutes of moderate-intensity aerobic activity are recommended?

<p>150-300 minutes (D)</p> Signup and view all the answers

Which statement best describes ergogenic aids in sports?

<p>They enhance physical power, mental strength, or mechanical edge. (A)</p> Signup and view all the answers

What is the primary difference between anabolism and catabolism?

<p>Anabolism builds complex body components from basic nutrients, while catabolism breaks down body components into simpler forms. (A)</p> Signup and view all the answers

What does the Calorie represent in nutrition?

<p>The energy content of a food item (D)</p> Signup and view all the answers

What is the primary carbohydrate source for energy during exercise or performance?

<p>Muscle glycogen (A)</p> Signup and view all the answers

What is the importance of carbohydrate intake before exercise?

<p>Helps maintain blood glucose levels (B)</p> Signup and view all the answers

Which type of training requires a higher carbohydrate intake of 8-10 g/kg/day?

<p>High volume intense training (3-6 h/day, 5-6 d/week) (C)</p> Signup and view all the answers

What is the unique ability of carbohydrates compared to protein and fat as an energy source during exercise?

<p>Can produce ATP for muscle contraction rapidly (C)</p> Signup and view all the answers

Are pyruvate, lactate salts, or ribose supported with substantial evidence as effective ergogenic aids?

<p>Evidence is inconclusive and more research is needed (D)</p> Signup and view all the answers

Which macronutrient has the highest calorie content per gram?

<p>Fats (A)</p> Signup and view all the answers

In the human body, which energy system provides energy rapidly but has a limited energy supply?

<p>ATP-PCr system (A)</p> Signup and view all the answers

For high-intensity workouts lasting for 30-120 seconds, which energy system is predominantly utilized?

<p>Lactic acid system (A)</p> Signup and view all the answers

What is the primary energy source during low-intensity exercise?

<p>Fats (B)</p> Signup and view all the answers

Which energy system produces ATP in large amounts but at a slower rate?

<p>Oxygen system (C)</p> Signup and view all the answers

What benefit can carbohydrate combinations provide compared to single carbohydrates during exercise?

<p>Higher oxidation rates (D)</p> Signup and view all the answers

Which class of athletes is most likely to benefit from carbohydrate loading?

<p>Long-distance runners (A)</p> Signup and view all the answers

What is the primary reason for deamination of amino acids in the body?

<p>Excess nitrogen storage (B)</p> Signup and view all the answers

What type of proteins are considered high-quality or complete proteins?

<p>Animal-based proteins (C)</p> Signup and view all the answers

Which nutrient lacks evidence to support its ergogenic effect on endurance performance?

<p>Pyruvate (D)</p> Signup and view all the answers

What is the recommended protein intake range for athletes based on body weight?

<p>1.2-2.0 g/kg (C)</p> Signup and view all the answers

Which macronutrient increases protein synthesis in skeletal muscle?

<p>Protein (B)</p> Signup and view all the answers

Which supplement is specifically beneficial for enhancing exercise performance in endurance activities?

<p>Dietary Nitrate (A)</p> Signup and view all the answers

What role does insulin play in liver metabolism?

<p>Increase glycogenesis, decrease glyconeogenesis (B)</p> Signup and view all the answers

If an individual consumes 2500 kcal per day, what is the AMDR (Acceptable Macronutrient Distribution Range) for carbohydrate intake based on a typical range?

<p>45-65% of total energy intake (A)</p> Signup and view all the answers

What is the main difference between MPS and MPB?

<p>MPS builds new muscle proteins, while MPB breaks down muscle proteins (B)</p> Signup and view all the answers

In what state is a person when MPS equals MPB?

<p>Neutral protein balance (B)</p> Signup and view all the answers

How does resistance training impact MPS and MPB?

<p>Increases MPS and decreases MPB (C)</p> Signup and view all the answers

What is the role of leucine in MPS?

<p>Leucine stimulates muscle protein synthesis (A)</p> Signup and view all the answers

Why is sufficient carbohydrate intake important during aerobic endurance exercise?

<p>To reduce the formation of ammonia (A)</p> Signup and view all the answers

What happens to protein metabolism during exercise?

<p>Produces a positive protein balance (C)</p> Signup and view all the answers

What are the consequences of insufficient protein intake for athletes?

<p>Muscle wasting and slow recovery (A)</p> Signup and view all the answers

During which type of exercise does protein oxidation increase?

<p>Aerobic endurance training (B)</p> Signup and view all the answers

How do fast-acting proteins differ from slow-acting proteins in terms of MPS and MBP?

<p>Slow-acting proteins promote muscle growth through MPS. (B)</p> Signup and view all the answers

What does a negative nitrogen balance indicate in terms of protein intake?

<p>Protein catabolism due to insufficient dietary intake or overtraining (D)</p> Signup and view all the answers

What are the three major factors/components that make up total daily energy expenditure?

<p>Basal energy expenditure, thermic effect of food, physical activity energy expenditure (B)</p> Signup and view all the answers

Which type of calorimetry measures heat production directly?

<p>Bomb calorimeter (D)</p> Signup and view all the answers

Which macronutrient undergoes GLUT-4 translocation as a result of exercise?

<p>Carbohydrates (A)</p> Signup and view all the answers

What major energy sources do carbohydrates provide during exercise?

<p>Glucose, fructose, galactose (D)</p> Signup and view all the answers

Which is the greatest energy storage form in terms of kcal?

<p>Polysaccharides (B)</p> Signup and view all the answers

What is the primary difference between the physical and chemical changes that take place in the body?

<p>Physical changes refer to metabolism, while chemical changes are related to digestion. (D)</p> Signup and view all the answers

In the context of human energy systems, which process involves the synthesis of complex body components from basic nutrients?

<p>Anabolism (A)</p> Signup and view all the answers

Which nutrient is the primary energy source during low-intensity exercise?

<p>Carbohydrates (B)</p> Signup and view all the answers

What does a negative nitrogen balance indicate in terms of protein intake?

<p>Low protein intake (C)</p> Signup and view all the answers

Which major human energy system provides rapid energy but has a limited energy supply?

<p>Anaerobic alactic system (D)</p> Signup and view all the answers

Which energy system is known for providing energy rapidly but with a limited energy supply?

<p>Phosphocreatine system (A)</p> Signup and view all the answers

For high-intensity workouts lasting for 30-120 seconds, which energy system is predominantly utilized?

<p>Lactic acid system (A)</p> Signup and view all the answers

Which energy system produces ATP in large amounts but at a slower rate?

<p>Aerobic capacity system (B)</p> Signup and view all the answers

Which energy system helps replace ATP but cannot be used directly as a source of energy for muscular contraction?

<p>Lactic acid system (A)</p> Signup and view all the answers

Which energy system is commonly associated with competitive weight lifting and the 100m dash?

<p>Phosphocreatine system (C)</p> Signup and view all the answers

What is the importance of carbohydrate intake before exercise?

<p>Helps maintain blood glucose levels and fuel muscles (B)</p> Signup and view all the answers

Which energy system provides energy rapidly but has a limited energy supply in the human body?

<p>Phosphagen system (D)</p> Signup and view all the answers

Why are carbohydrates essential for athletes during high-volume intense training?

<p>To replenish liver and muscle glycogen (A)</p> Signup and view all the answers

During which type of exercise can carbohydrates be used both anaerobically and aerobically as an energy source?

<p>High-intensity short-duration exercise (A)</p> Signup and view all the answers

What role do glycogen depletion and blood glucose level decline play in exercise-induced fatigue?

<p>They result in fatigue by reducing available energy sources (C)</p> Signup and view all the answers

Why does deamination need to occur in the body?

<p>Because the body cannot store excess nitrogen (D)</p> Signup and view all the answers

What is the primary benefit of carbohydrate loading for athletes?

<p>Delayed onset of fatigue (C)</p> Signup and view all the answers

Which class of athletes is likely to benefit the most from carbohydrate loading?

<p>Endurance runners (B)</p> Signup and view all the answers

What is the potential benefit of consuming glucose + fructose combinations during exercise?

<p>Increased oxidation rates compared to single glucose intake (A)</p> Signup and view all the answers

Which nutrient lacks substantial evidence to support its ergogenic effect on endurance performance?

<p>Ribose (A)</p> Signup and view all the answers

What is the primary energy source during short bursts of high-intensity exercises, such as those lasting for 10-30 seconds?

<p>Glycolysis (B)</p> Signup and view all the answers

Which energy system provides energy rapidly but has a limited energy supply, particularly utilized during exercises lasting 30 seconds to 2 minutes?

<p>Creatine Phosphate System (D)</p> Signup and view all the answers

During endurance activities like long-distance running or cycling, which energy system plays a significant role in providing sustained energy production?

<p>Oxidative Phosphorylation (A)</p> Signup and view all the answers

In which energy system does protein oxidation increase during exercises that last for an extended time, typically more than 2 minutes?

<p>Protein Catabolism (C)</p> Signup and view all the answers

For high-intensity workouts lasting 30-120 seconds, which energy system is predominantly utilized to meet the immediate energy demands?

<p>Anaerobic Glycolysis (D)</p> Signup and view all the answers

What does a negative nitrogen balance indicate in terms of protein intake?

<p>Protein catabolism (B)</p> Signup and view all the answers

Which energy system provides rapid energy but has a limited energy supply?

<p>Anaerobic glycolysis (B)</p> Signup and view all the answers

What is the by-product of protein metabolism during exercise that may contribute to fatigue?

<p>Ammonia (A)</p> Signup and view all the answers

Which nutrient is the primary energy source during low-intensity exercise?

<p>Fat (A)</p> Signup and view all the answers

Which major human energy system produces ATP in large amounts but at a slower rate?

<p>Oxidative phosphorylation (D)</p> Signup and view all the answers

During resistance training, what effect does it have on protein catabolism?

<p>Decreases protein catabolism (B)</p> Signup and view all the answers

What is the main class of amino acids oxidized during exercise?

<p>Branch-chain amino acids (BCAAs) (B)</p> Signup and view all the answers

How do fast-acting proteins differ from slow-acting proteins in terms of MPS and MPB?

<p>Fast-acting proteins enhance muscle growth quicker (C)</p> Signup and view all the answers

What role does leucine play in MPS?

<p>Stimulates muscle protein synthesis (A)</p> Signup and view all the answers

What is the consequence of insufficient protein intake for athletes?

<p>Negative nitrogen balance leading to muscle wasting (D)</p> Signup and view all the answers

More Like This

Use Quizgecko on...
Browser
Browser