How does the work expenditure of a 60 year old to overcome static mechanical forces during normal breathing compare to that of a 20 year old?
A) The work expenditure of the 60 year old is 20% higher than the work expenditure of the 20 year old
B) The work expenditure is approximately equal
C) The work expenditure of the 60 year old is 200% greater than that of the 20 year old
D) The work expenditure of the 60 year old is only 80% of that of the 20 year old

Question

Quizplus · Accepted Answer

The work expenditure of a 60 year old is higher due to age-related changes in the respiratory system, such as decreased elasticity of the lungs and chest wall, leading to increased resistance against which the respiratory muscles must work.

How Does the Work Expenditure of a 60 Year Old