Week 5: Thursday, Oct 5th

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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?

Frailty Signup and view all the answers

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

Females 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?

Leg muscles Signup and view all the answers

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

20% Signup and view all the answers

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

99:100 Signup and view all the answers

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

68:99 Signup and view all the answers

Is sex the same as gender according to the text?

No 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?

Health-survival paradox 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?

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

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

Non-frail Signup and view all the answers

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

4 Signup and view all the answers

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

0 Signup and view all the answers

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

Force control Signup and view all the answers

Which research study focuses on exercise prescription to reverse frailty?

Bray et al. (2016) Signup and view all the answers

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

1.7 Signup and view all the answers

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

Frail Signup and view all the answers

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

9 Signup and view all the answers

Week 5: Thursday, Oct 5th_MC

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