Question

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

Answer

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