Thermoregulation: Body Temperature Regulation and Heat Loss Mechanisms
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Questions and Answers

What is the MET value equivalent to 3.5 ml/kgxmin?

  • 0.5 MET
  • 2 MET
  • 3 MET
  • 1 MET (correct)

    • In individuals with a high VO 2 max, what is the minimum intensity required to improve VO 2 max?

  • 46% of VO 2R (correct)
  • 50% of VO 2R
  • 40% of VO 2R
  • 30% of VO 2R

    • What is the primary function of carbohydrates in the body?

  • To provide energy for smooth muscles
  • To facilitate membrane transport
  • To provide structure to cell membranes
  • To fuel skeletal muscles and brain (correct)

    • What is the main function of phospholipids in the body?

    <p>To act as a structural component of cell membranes</p> Signup and view all the answers

    What is the primary function of vitamins in the body?

    <p>To participate in chemical reactions that release energy from fuels</p> Signup and view all the answers

    What is the most prevalent type of water in the body?

    <p>Intracellular water</p> Signup and view all the answers

    What is a primary contributor to visceral fat accumulation?

    <p>Alcohol consumption</p> Signup and view all the answers

    What is the primary goal of training to improve aerobic power?

    <p>To overload the circulatory system and stress the oxidative capacities of skeletal muscle</p> Signup and view all the answers

    Which of the following is most dependent on fast-twitch fibers determined early in development?

    <p>Anaerobic capacity</p> Signup and view all the answers

    What is the likely cause of most injuries in training?

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

    What is the principle of 'live high, train low'?

    <p>Train at high altitudes, rest at low altitudes</p> Signup and view all the answers

    What is the primary function of minerals in the body?

    <p>Form inorganic structures in bones and teeth</p> Signup and view all the answers

    Which of the following criteria is NOT a characteristic of an essential amino acid?

    <p>The compound can be synthesized in the liver</p> Signup and view all the answers

    What is the purpose of the Estimated Average Requirements (EARs) in the Dietary Reference Intake?

    <p>To set the daily intake of a nutrient that will meet the needs of 50% of people within a defined age group</p> Signup and view all the answers

    What is the primary difference between the Recommended Dietary Allowance (RDA) and the Adequate Intake (AI)?

    <p>The RDA is set for nutrients with sufficient data, while the AI is set for nutrients with insufficient data</p> Signup and view all the answers

    Which of the following is a characteristic of the Tolerable Upper Intake Level (UL)?

    <p>The UL is the maximum daily intake of a nutrient that will not cause adverse health effects</p> Signup and view all the answers

    What is the purpose of the Acceptable Macronutrient Distribution Ranges (AMDRs)?

    <p>To provide ranges of macronutrient intake to reduce the risk of chronic diseases</p> Signup and view all the answers

    What is the primary function of the preoptic anterior hypothalamus (POAH) in the human body?

    <p>To maintain a relatively constant core temperature around a set point</p> Signup and view all the answers

    What is the result of a significant decline in heat acclimation after 7 days of inactivity or no heat exposure?

    <p>Complete loss of acclimation</p> Signup and view all the answers

    What is the minimal volume of aerobic exercise required for health benefits, according to the current physical activity guidelines?

    <p>7.5 MET-hr/week</p> Signup and view all the answers

    What is the primary mechanism of heat loss during exercise in high ambient temperature and high relative humidity?

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

    What is the range of intensity associated with improvements in cardiorespiratory fitness?

    <p>40-89% of heart rate reserve or oxygen uptake reserve</p> Signup and view all the answers

    What is the result of cold acclimation on skin temperature?

    <p>Lower skin temperature at which shivering begins</p> Signup and view all the answers

    What is the primary function of eccrine sweat glands?

    <p>To regulate body temperature</p> Signup and view all the answers

    What is the range of frequency associated with improvements in cardiorespiratory fitness?

    <p>3-5 days/week</p> Signup and view all the answers

    What is the result of heat acclimation on sweat rate?

    <p>Earlier onset of sweating and higher sweat rate</p> Signup and view all the answers

    What is the primary function of apoeccrine sweat glands?

    <p>Located in few body regions, limiting effectiveness</p> Signup and view all the answers

    What is the recommended rate of increase in intensity or duration of strength training exercises per week?

    <p>≤10%</p> Signup and view all the answers

    What is the primary energy source for short, high-intensity work intervals of 5 to 10 seconds?

    <p>ATP-PC system</p> Signup and view all the answers

    What is the primary factor influencing performance that is affected by factors such as diet and energy production?

    <p>CNS function</p> Signup and view all the answers

    What is the primary site of fatigue during high-intensity exercises?

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

    What is the order of muscle fiber recruitment during aerobic activities of progressively greater intensity?

    <p>Type 1, type 2a, type 2x</p> Signup and view all the answers

    What is the primary factor limiting maximum running performance for distances of 1500 m to 5 km?

    <p>CV system</p> Signup and view all the answers

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