Chapter 5 Test

When is RER <0.7?

• during gluconeogenesis from amino acids and fat

• when lactate accumulation increases carbon dioxide production

• RER cannot drop below 0.7

• as exercise intensity reaches a maximum

Compared to fat molecules, glucose molecules contain carbon atoms.

• four times as many

• twice as many

• the same number of

• fewer

Which of the following respiratory exchange ratios (RERs) is typical for a resting individual?

• 0.71

• 0.78

• 0.89

• 0.95

10. As submaximal exercise intensity increases, VO2

• increases

• decreases

• remains the same

• fluctuates

Which of the following terms describes the volume of oxygen consumed during the minutes immediately after exercise ceases that is above the volume normally consumed at rest?

• oxygen debt

• oxygen deficit

• excess postexercise oxygen consumption

• lactate threshold

Studies show that economy of effort is greatest in

• middle-distance athletes

• sprinters

• long- and ultra-long-distance athletes

• All have similar economy of effort.

Oxygen deficit is incurred when

• O₂ consumption > O₂ demand in early exercise

• O₂ demand > O₂ consumption in early recovery

• O₂ demand > O₂ consumption in early exercise

• O₂ consumption > O₂ demand in early recovery

Why do women typically have lower VO₂max values compared to men?

• Women usually have a higher percentage of body fat and lower muscle mass.

• Women generally have a higher concentration of hemoglobin in their blood.

The method of estimating total-body energy expenditure that uses respiratory gases is called _____________________.

• indirect calorimetry

• direct calorimetry

• bioelectrical impedance analysis

• dual-energy X-ray absorptiometry

The __________ of oxygen that is consumed by the body every minute is called V̇O₂.

• volume

• rate

• amount

• pressure