Science of Exercise Coursera Quiz Answers | 100% Correct Answers

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Science of Exercise Coursera Quiz Answers

Week 1 Quiz

1. What is the primary source of energy during a single maximal bench press:

  • ATP
  • Creatine phosphate
  • Glucose
  • Fat

2. What are the primary sources of energy during a 100-meter dash:

  • Fat, Creatine phosphate, ATP
  • Glucose, Creatine phosphate, ATP
  • Glucose, Fat, Creatine phosphate, ATP
  • Glucose, Creatine phosphate, Fat

3. What are the primary sources of energy during a marathon:

  • Creatine phosphate
  • Fats & carbohydrates
  • Fats only
  • Carbohydrates only

4. Regarding the “crossover concept” which of the following is true ( select all that apply ):

  • At easy exercise intensities fat is the preferred fuel
  • At easy exercise intensities carbohydrate is the preferred fuel
  • At hard exercise intensities fat is the preferred fuel
  • At hard exercise intensities carbohydrate is the preferred fuel

5. The major site of ATP production during aerobic exercise is:

  • Sarcoplasmic reticulum
  • Cell nucleus
  • Mitochondria
  • Hemoglobin

6. Indirect calorimetry can be used during exercise to:

  • Estimate an individual’s metabolic rate
  • Measure the rate of heat production
  • Measure the rate of oxygen production
  • Measure the rate of carbon dioxide consumption

7. The Respiratory Exchange Ratio is:

  • 0.70 for carbohydrates
  • 1.0 for fats
  • A ratio of carbon dioxide produced to oxygen consumed
  • A ratio of oxygen consumed to carbon dioxide produced

8. The major regulator of blood glucose during a 30 min submax exercise bout is:

  • Muscle glycogenolysis
  • Adipose lipolysis
  • Liver glycogenolysis
  • All of the above

9. Maximal oxygen consumption would be the highest for:

  • A sprinter
  • A body builder
  • A gymnast
  • A marathon runner

10. Adaptations to a training program primarily relate to the:

  • Reversibility Principle
  • Overload Principle
  • Specificity Principle
  • Individuality Principle

11. Who would most likely be in positive nitrogen balance:

  • A golfer on a high protein diet
  • A marathoner on a high protein diet
  • A cyclist on a high protein diet
  • A body builder on a high protein diet

12. Which is true regarding the rate of protein synthesis:

  • It decreases during exercise and increases post-exercise
  • It increases during exercise and increases post-exercise
  • It decreases during exercise and decreases post-exercise
  • It increases during exercise and decreases post-exercise

13. Which of the following is a source of carbohydrates for the body during exercise?

  • Muscle glycogen
  • Blood glucose
  • Liver glycogen
  • Liver gluconeogenesis
  • All of the above

14. Endurance training will result in:

  • An increase in carbohydrate utilization and fat sparing
  • An increase in fat utilization and carbohydrate sparing
  • An increase in fat and carbohydrate utilization
  • A decrease in fat and carbohydrate utilization

15. Which is true regarding fuel stored in the body:

  • There is significantly more carbohydrate than fat
  • There are equal amounts of carbohydrate and fat
  • These fuels will not deplete during any exercise
  • There is significantly more fat than carbohydrate
Week 2 Quiz

1. An isometric contraction is one in which there is:

  • No change in muscle length with tension development
  • A shortening of muscle with tension development
  • A lengthening of muscle with tension development
  • None of the above

2. What best describes a Type I muscle fiber:

  • High in mitochondria, high resistance to fatigue, relies on aerobic energy production
  • Low in mitochondria, low resistance to fatigue, relies on anaerobic energy production
  • High in mitochondria, low resistance to fatigue, relies on aerobic energy production
  • High in mitochondria, high resistance to fatigue, relies on anaerobic energy production

3. What best describes a Type IIx muscle fiber:

  • High in mitochondria, high resistance to fatigue, relies on aerobic energy production
  • Low in mitochondria, low resistance to fatigue, relies on anaerobic energy production
  • High in mitochondria, low resistance to fatigue, relies on aerobic energy production
  • High in mitochondria, high resistance to fatigue, relies on anaerobic energy production

4. Which best describes muscle fiber type recruitment during a graded-exercise test:

  • Type IIx first followed by Type IIa and finally Type I
  • Type IIa first followed by Type IIx and finally Type I
  • Type I first followed by Type IIx and finally Type IIa
  • Type I first followed by Type IIa and finally Type IIx

5. Distance athletes have the greatest percentage of:

  • Type IIx muscle fibers
  • Type IIa muscle fibers
  • Type I muscle fibers
  • An equal percentage of all 3 fiber types

6. Which is not a major role of the Respiratory System during exercise:

  • Maintain arterial oxygen levels
  • Eliminate carbon dioxide
  • Assist with buffering of metabolic acids
  • Maintain cardiac output

7. The optimal and most efficient way to increase ventilation during exercise is to:

  • Increase tidal volume more than breathing frequency
  • Increase breathing frequency more than tidal volume
  • Increase tidal volume and breathing frequency equally

8. Which is not a major role of the Cardiovascular System during exercise:

  • Shunt blood flow from viscera
  • Muscle glycogenolysis
  • Increase local muscle blood flow
  • Increase cardiac output

9. Heart rate increases during exercise as a result of:

  • An increase in parasympathetic and sympathetic nerve activity
  • A decrease in parasympathetic nerve activity and an increase in sympathetic nerve activity
  • A decrease in parasympathetic and sympathetic nerve activity
  • A decrease in circulating epinephrine

10. What is the Fick equation:

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11. Which is not a way to increase blood flow to active muscles:

  • Increase cardiac output
  • Vasodilation of blood vessels in active muscles
  • Vasoconstriction of blood vessels in the viscera
  • An increase in ventilation

12. Which is true regarding insulin:

  • It promotes glucose uptake by both muscle and liver
  • It promotes fat mobilization from adipose tissue
  • It promotes glycogen breakdown in muscle
  • It promotes glycogen breakdown in liver

13. Which is true regarding glucagon:

  • It promotes glucose uptake by both muscle and liver
  • It promotes fat synthesis in adipose tissue
  • It promotes glycogen breakdown in muscle
  • It promotes glycogen breakdown in liver

14. Which is not a role for epinephrine during exercise:

  • Increase heart rate
  • Increase stroke volume
  • Increase glycogen breakdown in muscle
  • Increase fat mobilization from adipose tissue
  • None of the above

15. Which is true regarding exercise and the immune system:

  • An intense bout of exercise will transiently enhance immune function
  • An intense bout of exercise will transiently suppress immune function
  • A moderate bout of exercise will transiently enhance immune function
  • A moderate bout of exercise will transiently suppress immune function
Week 3 Quiz

1. The main components of a sound endurance training program include all but one of the following:

  • The exercise frequency
  • The exercise duration
  • The exercise time of day
  • The exercise intensity

2. The term “muscle plasticity” (select all that apply):

  • Refers to the capacity for adaptive change
  • Is characterized by altered gene expression following a repeated stimulus
  • Applies to all types of muscle proteins

3. Which is false regarding adaptations to endurance training?

  • It will increase maximal heart rate
  • It will increase maximal stroke volume
  • It will increase maximal (a-v)O2 difference
  • None of the above

4. Which is true regarding detraining:

  • Maximal stroke volume decreases the fastest
  • Mitochondrial numbers decrease the fastest
  • Maximal heart rate decreases the fastest
  • VO2max decreases the fastest

5. To maximize muscle mass and strength gains from a resistance training program one should:

  • Perform many repetitions per set at a low percentage of their 1-Repetiton maximum
  • Perform fewer repetitions per set at a low percentage of their 1-Repetiton maximum
  • Perform many repetitions per set at a high percentage of their 1-Repetiton maximum
  • Perform fewer repetitions per set at a high percentage of their 1-Repetiton maximum

6. Increases in strength associated with a resistance training program are:

  • Initially due to muscle hypertrophy followed by neural adaptations weeks later
  • Initially due to both muscle hypertrophy and neural adaptations
  • Initially due to neural adaptations followed by muscle hypertrophy weeks later
  • None of the above

7. For the endurance athlete the best time to replenish muscle glycogen stores would be:

  • Within the first 2-hours after exercising when insulin sensitivity is high
  • Within the first 12-hours after exercising when insulin sensitivity is high
  • Within the first 2-hours after exercising when insulin sensitivity is low
  • Within the first 12-hours after exercising when insulin sensitivity is low

8. Dehydration can negatively impact performance by all but one of the following mechanisms:

  • A decrease in plasma volume
  • A decrease in stroke volume
  • A decrease in heart rate
  • A decrease in cardiac output

9. Likely causes for fatigue during short-term high-intensity exercise are:

  • A depletion of ATP, creatine phosphate and hydrogen ions
  • A depletion of ATP and an accumulation of creatine phosphate and hydrogen ions
  • A depletion of creatine phosphate and an accumulation of ATP and hydrogen ions
  • A depletion of ATP and creatine phosphate and an accumulation of hydrogen ions

10. Likely causes for fatigue during long-term lower-intensity exercise are:

  • A depletion of muscle glycogen & calcium and an increase in body temperature
  • A depletion of creatine phosphate and an accumulation of hydrogen ions
  • A depletion of muscle glycogen & calcium and a decrease in body temperature
  • A depletion of muscle glycogen and an increase in muscle calcium

11. The main cause for delayed onset muscle soreness is:

  • Isometric muscle contractions
  • Concentric muscle contractions
  • Eccentric muscle contractions
  • All of the above

12. The main cause for immediate muscle soreness experienced during exercise is:

  • Isometric muscle contractions
  • Concentric muscle contractions
  • Eccentric muscle contractions
  • All of the above

13. Which is true regarding anabolic steroids:

  • They have few side effects
  • They are similar in structure to testosterone
  • They are administered by injection only
  • They are not as effective as the human growth hormone for increasing muscle mass

14. Which athlete would benefit the most from blood doping:

  • A body builder
  • A gymnast
  • A sprinter
  • A 10K runner

15. Which is not a mechanism whereby caffeine may improve exercise performance:

  • Increase mental alertness
  • Increase creatine phosphate stores
  • Increase fat mobilization
  • Increase time to exhaustion

Week 4 Quiz

1. Which is the greatest risk factor for all-cause mortality:

  • High cholesterol
  • Physical inactivity
  • Hypertension
  • Obesity

2. Select all that apply – Regular exercise can reduce the risk for:

  • Depression
  • Heart disease
  • Type 2 diabetes
  • Obesity

3. Which is false regarding visceral fat:

  • It is the fat located around inner organs
  • It puts an individual at a greater risk for Type 2 diabetes
  • It puts an individual at a greater risk for heart disease
  • It is less of a health risk than subcutaneous fat

4. In order to lose and maintain weight loss an individual must:

  • Maintain energy balance through diet and exercise
  • Maintain a negative energy balance through diet and exercise
  • Maintain a positive energy balance through diet and exercise
  • Use dieting alone to lose and maintain weight loss

5. The benefits of exercise on the risk factors for heart disease include all but one of the following:

  • Decreased cigarette smoking
  • Decreased hypertension
  • Decreased obesity
  • Decreased LDL cholesterol

6. Which is false regarding atherosclerosis:

  • It is caused by deposits of fatty plaques in arteries
  • It increases the risk of a stroke
  • It is caused by elevated HDL cholesterol levels
  • It increases the risk of a heart attack

7. Type 2 diabetes is:

  • Characterized by the development of insulin resistance
  • Characterized by the development of hypoglycemia
  • Characterized by the development of insulin sensitivity
  • Characterized by the development of subcutaneous fat

8. Regular exercise can help to prevent and treat Type 2 diabetes by:

  • Increasing blood glucose and insulin sensitivity
  • Decreasing blood glucose and increasing insulin sensitivity
  • Increasing blood glucose and decreasing insulin sensitivity
  • Decreasing blood glucose and insulin sensitivity

9. Regular exercise can reduce the risk of cancer by all but one of the following mechanisms:

  • Increasing specific growth factors
  • Enhancing natural immunity
  • Increasing levels of antioxidants
  • Lowering body fat

10. Regarding exercise as a treatment for cancer patients, which of the following is false:

  • It can reduce cancer-related fatigue
  • It can reduce recurrence and mortality in some cancers
  • It can reduce depression and anxiety
  • It is less effective than pharmaceutical interventions for cancer-related fatigue

11. The functional consequences of sarcopenia include:

  • Decrease in muscle mass & strength, increased risk of falling, increase in bone density
  • Decrease in muscle mass & strength, decreased risk of falling, decrease in bone density
  • Decrease in muscle mass & strength, increased risk of falling, decrease in bone density
  • Increase in muscle mass & strength, increased risk of falling, decrease in bone density

12. Regarding exercise and osteoporosis which is true:

  • Exercise will increase calcium deposition into bone decreasing bone mineral density
  • Exercise will decrease calcium deposition into bone increasing bone mineral density
  • Exercise will decrease calcium deposition into bone decreasing bone mineral density
  • Exercise will increase calcium deposition into bone increasing bone mineral density

13. The decline in VO2max with advancing age is:

  • Similar for trained and untrained individuals
  • Due to a reduction in maximal cardiac output but not maximal (a-v)O2 difference
  • Partially offset by aerobic training at any age
  • Due to a reduction in maximal (a-v)O2 difference but not maximal cardiac output

14. Which is true regarding a single bout of exercise and the brain:

  • Exercise increases neuroelectrical activity but not brain blood flow
  • Exercise increases brain blood flow but not neuroelectrical activity
  • Exercise brain blood flow and neuroelectrical activity are similar to rest
  • Exercise increases brain blood flow and neuroelectrical activity

15. Regular exercise can:

  • Decrease the risk of dementia, symptoms for Parkinson’s disease and increase depression
  • Decrease the risk of dementia, symptoms for Parkinson’s disease and depression
  • Increase the risk for dementia but reduce the risk for depression
  • Increase the symptoms for Parkinson’s disease but reduce the risk for Alzheimer’s disease

Conclusion

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