Physical activity is an inclusive term that refers to any expenditure of energy brought about by bodily movement via the skeletal muscles; as such, it includes the complete spectrum of activity from very low resting levels to maximal exertion. Exercise is a component of physical activity. The distinguishing characteristic of exercise is that it is a structured activity specifically planned to develop and maintain physical fitness.
"exercise." Britannica School. Encyclopaedia Britannica, Inc., 2013. Web. 21 Oct. 2013.
How is the word expenditure used in this excerpt?
ATo show the type of activities completed by skeletal muscles
BTo identify how much energy is used at low resting levels
CTo describe the amount of movement required for maximal exertion
DTo highlight that a physical activity requires a body to use energy
"exercise." Britannica School. Encyclopaedia Britannica, Inc., 2013. Web. 21 Oct. 2013.
How is the word expenditure used in this excerpt?
ATo show the type of activities completed by skeletal muscles
BTo identify how much energy is used at low resting levels
CTo describe the amount of movement required for maximal exertion
DTo highlight that a physical activity requires a body to use energy