Choose best answer 1. Which of the following values is a typical value for the m
ID: 303114 • Letter: C
Question
Choose best answer
1. Which of the following values is a typical value for the maximal aerobic power of the "average American 40-year-old person on the street"?
a. 1 kcal/min
b. 5 kcal/min
c. 15 kcal/min
d. 25 kcal/min
2. 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.
3. During a test in the laboratory, an athlete ran at 10.0 mph for a period of time. At the start of the test, the treadmill speed was set at 10.0 mph and the athlete was standing with legs straddling the moving belt. On a signal, he/she "jumped" onto the moving belt and started running at 10.0 mph. True statements about changes in power at the start of this test include the following:
a. Power output increased abruptly and power input increased gradually over a 1-o 2-minute period.
b. Both power output and power input increased abruptly.
c. Power input increased abruptly and power output increased gradually over a 1-to 2-minute period.
d. Both power output and power input increased gradually over a 1- to 2-minute period.
4. The largest proportion of the carbon dioxide delivered from peripheral tissues to the lungs is carried in the blood:
a. in combination with hemoglobin in red blood cells
b. dissolved in the fluid portion of the blood
c. as plasma bicarbonate
d. in combination with plasma proteins
Explanation / Answer
1. The typical value for the maximal aerobic power of the "average American 40-year-old person on the street is 25 kcal/min
Answer: Option d
2. Both a and b are limitation on the definition of physical work
Answer: Option d
3. Power output is the power exerted while doing physical activities. When the athlete jumped over the treadmill, his output power increases abruptly while the power input of treadmill increased gradually.
Answer: Option a
4. The majority of CO2 molecules are transported from tissues to lungs in the form of plasma bicarbonate ion. CO2 can be quickly transformed to carbonate ion and after reaching the lungs, it gets released.
Answer: Option c