Question

A limitation of the strict definition of physical work in exercise physiology is:

a. Often external physical work cannot be easily measured.
b. There are many times in exercise when no external physical work is done.
c. The primary interest in exercise physiology is energy use,and physical work is unrelated to energy use.
d. Both a and b.

Answer 1

Answer: a. Often external physical work cannot be easily measured.

Step-by-step explanation:

Physical work or manual labor is done by people as a part of their daily routine. This involves the movement of muscles and bones to a limited to considerable extent. It involves the activities like cooking, cleaning and moping, riding cycle and other activities which requires labor.

These physical works cannot be considered as a part of exercise as these are not considerably measured. But they can be included as a part of exercise as in both cases manual labor is required.