Oxygen Utilization and Nutrition for Physical Activity Quiz
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Questions and Answers

What is the main metabolic adaptation that enhances glycogen sparing and the use of fat during exercise?

  • Increase in mitochondria size and number
  • Increase in myoglobin
  • Increase in oxidative enzymes (correct)
  • Increase in VO2 max
  • During which type of exercise does the body primarily use fat as a fuel source?

  • High-intensity exercise
  • Short-duration anaerobic exercise
  • Long-duration aerobic exercise (correct)
  • Anaerobic metabolism
  • What is the main benefit of training with repeated bouts of aerobic exercise?

  • Greater proportion of lean body mass
  • Increase in mitochondrial size and number (correct)
  • Improved flexibility and balance
  • Enhanced muscle strength
  • What is the total energy expenditure composed of?

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

    What is the recommended duration of moderate-intensity exercise per week for adults?

    <p>150 minutes</p> Signup and view all the answers

    Which nutrient is needed for gene expression, production of sugar ribose, and RNA synthesis during pregnancy?

    <p>Thiamin</p> Signup and view all the answers

    Which micronutrient is crucial for DNA synthesis and amino acid metabolism during pregnancy?

    <p>Folate</p> Signup and view all the answers

    Which mineral is needed for the formation of new maternal and fetal cells during pregnancy?

    <p>Zinc</p> Signup and view all the answers

    Which vitamin is necessary for cell differentiation and development during pregnancy?

    <p>Vitamin A</p> Signup and view all the answers

    Which mineral is required for the growth and development of bone and connective tissue during pregnancy?

    <p>Calcium</p> Signup and view all the answers

    Which nutrient is needed for the synthesis of thyroid hormones and deficiency can cause developmental disorders during pregnancy?

    <p>Iodine</p> Signup and view all the answers

    What is the gold standard for cardiorespiratory fitness?

    <p>Oxygen utilization during intense exercise</p> Signup and view all the answers

    What measures the volume of CO2 released/volume of O2 absorbed at the cellular level and in blood samples?

    <p>Respiratory quotient (RQ)</p> Signup and view all the answers

    Which macronutrient has a specific respiratory quotient of 1.0?

    <p>CARBOHYDRATES</p> Signup and view all the answers

    Which vitamins and minerals are crucial for physical activity?

    <p>Vitamin C, vitamin D, iron, calcium</p> Signup and view all the answers

    What is essential for eliminating heat, transporting O2 and nutrients, and preventing dehydration?

    <p>Water</p> Signup and view all the answers

    What is important for hemoglobin production and its regulation involves factors like hepcidin, transferrin, ferroportin, and ferritin?

    <p>Iron</p> Signup and view all the answers

    Study Notes

    Oxygen Utilization and Nutrition for Physical Activity

    • Oxygen utilization during intense exercise is an indicator of aerobic endurance.
    • It is the gold standard for cardiorespiratory fitness and is influenced by genetics and training.
    • Respiratory quotient (RQ) measures the volume of CO2 released/volume of O2 absorbed at the cellular level and in blood samples.
    • RER measures the volume of CO2 released/volume of O2 absorbed through the mouth/nose.
    • Different macronutrients have specific respiratory quotients: FAT (0.7), PROTEIN (0.8-0.9), CARBOHYDRATES (1.0).
    • Exercise and nutrition needs depend on duration, intensity, and frequency, and various vitamins and minerals play essential roles in energy metabolism.
    • Thiamin (B1), riboflavin (B2), niacin (B3), biotin, pantothenic acid, vitamin C, vitamin E, calcium, and vitamin D are crucial for physical activity.
    • Water is essential for eliminating heat, transporting O2 and nutrients, and preventing dehydration.
    • Iron is important for hemoglobin production, and its regulation involves absorption, release, and storage in the body.
    • Iron regulation includes factors like hepcidin, transferrin, ferroportin, and ferritin for maintaining optimal levels.
    • Iron deficiency can lead to anemia, while iron toxicity can occur in conditions like hemochromatosis.
    • Nutrition and pregnancy involve a series of developmental stages, from fertilization to fetal development, with specific milestones for each stage.

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    Description

    Test your knowledge of oxygen utilization and nutrition for physical activity with this quiz. Explore concepts like aerobic endurance, respiratory quotient, macronutrient-specific RQs, exercise and nutrition needs, vital vitamins and minerals for energy metabolism, the role of water and iron, and nutrition during pregnancy.

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