Physical Activity and Cardiorespiratory Fitness

Question 1

Cardiorespiratory fitness can only be measured through exercise.

Revolt · Accepted Answer

F

Question 2

Aerobic exercise forces the body to provide extra oxygen to the muscles.

Revolt · Accepted Answer

T

Question 3

Explain how the cardiovascular and respiratory systems work together to deliver oxygen to the body.

Revolt · Accepted Answer

The respiratory system brings oxygen into the lungs where it diffuses into the blood; the cardiovascular system (heart and vessels) then pumps the oxygenated blood to body tissues and returns deoxygenated blood carrying carbon dioxide back to the lungs for exhalation.

Question 4

Why do males tend to have better cardiorespiratory fitness than females?A.Males tend to have higher levels of hemoglobin in their blood.B.Females tend to have higher levels of hemoglobin in their blood.C.Males tend to have higher levels of body fat than females.D.Females tend to have more lean muscle mass than males.

Revolt · Accepted Answer

A

Question 5

Describe how a multistage fitness test works and what it is intended to do.

Revolt · Accepted Answer

The multistage fitness test (beep test) requires participants to run back and forth between two lines 20 m apart in time with audio beeps that progressively get faster. The test continues until the participant can no longer keep up with the beeps. It estimates a person's VO2 max and overall cardiorespiratory endurance.

Question 6

What are the advantages and disadvantages of each of the methods of calculating maximum oxygen intake?

Revolt · Accepted Answer

Direct lab tests (treadmill/cycle with gas analysis) are highly accurate but costly and require specialized equipment. Field tests (step test, 1.5-mile run) are inexpensive and easy to administer for large groups but less accurate. Non-exercise estimates using age, BMI, and activity level are convenient yet only approximate VO2 max.

Question 7

Doctors can directly measure a person's maximum oxygen intake by measuring their oxygen intake while they __________.A.do as many push-ups as possibleB.run on a treadmill, which increases speedC.do jumping jacks until they are tiredD.sit motionless with a resting heart rate

Revolt · Accepted Answer

B

Question 8

Describe the factors that influence the level of cardiorespiratory fitness a person is able to achieve.

Revolt · Accepted Answer

Cardiorespiratory fitness is influenced by genetics, age, sex, body composition, current activity level, and consistent aerobic training. Higher levels of regular physical activity produce greater improvements.

Question 9

Body composition has little to do with cardiorespiratory fitness.

Revolt · Accepted Answer

F

Question 10

The respiratory system should remove which of the following from your body?A.carbon monoxideB.carbon dioxideC.oxygenD.oxygen bioxide

Revolt · Accepted Answer

B

Physical Activity and Cardiorespiratory Fitness Answers

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