Week 5: Thursday, Oct 5th_MC
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Week 5: Thursday, Oct 5th_MC

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@PhenomenalWatermelonTourmaline

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Questions and Answers

Which muscle group is primarily affected by age-related changes in contractile properties?

  • Leg muscles
  • Arm muscles
  • Knee flexors (correct)
  • Muscles in the back

    • What is the main factor contributing to the decrease in muscle size with age?

  • Substitution of non-contractile tissue
  • Change in muscle composition
  • Decrease in fiber size and number (correct)
  • Loss of motor neurons

    • Which factor is NOT associated with age-related decline in force steadiness?

  • Maximal grip strength
  • Force steadiness (correct)
  • Motor neuron size and number
  • Sex-specific differences

    • What is the main factor influencing functional dependence in older adults?

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

    Which sex has a higher prevalence of frailty according to the Frailty Index?

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

    Which muscle group is primarily responsible for the strength required to step up and rise from an armless chair?

    <p>Leg muscles</p> Signup and view all the answers

    According to the text, what is the percentage of the population in Canada that is 65+ years old?

    <p>20%</p> Signup and view all the answers

    What is the ratio of males to females at the age of 50 according to the text?

    <p>99:100</p> Signup and view all the answers

    What is the ratio of males to females at the age of 85-89 according to the text?

    <p>68:99</p> Signup and view all the answers

    Is sex the same as gender according to the text?

    <p>No</p> Signup and view all the answers

    What is the term used to describe the phenomenon where men typically die younger than women, yet more women than men struggle with chronic illnesses and live longer?

    <p>Health-survival paradox</p> Signup and view all the answers

    What is the website mentioned in the text that provides better science for meaningful research on sex-specific aging?

    <p><a href="https://cihr-irsc.gc.ca/e/49347.html">https://cihr-irsc.gc.ca/e/49347.html</a></p> Signup and view all the answers

    Which of the following is NOT a component of the frailty phenotype?

    <p>Non-frail</p> Signup and view all the answers

    What is the Clinical Frailty Scale score for someone who is managing well?

    <p>4</p> Signup and view all the answers

    What is the gait speed (in m/sec) for someone who is transitioning frail?

    <p>0</p> Signup and view all the answers

    Which of the following is a factor related to muscle strength and frailty?

    <p>Force control</p> Signup and view all the answers

    Which research study focuses on exercise prescription to reverse frailty?

    <p>Bray et al. (2016)</p> Signup and view all the answers

    What is the gait speed (in m/sec) for someone who is independent?

    <p>1.7</p> Signup and view all the answers

    Which component of frailty is associated with a gait speed of 0.5 m/sec?

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

    What is the Clinical Frailty Scale score for someone who is mildly frail?

    <p>9</p> Signup and view all the answers

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