Question 1

The process of breaking down triglycerides into free fatty acids and glycerol is called

Accepted Answer

A) beta oxidation. 
B) glycogenolysis. 
C) lipolysis. 
D) lipogenesis. 
A) beta oxidation. 
B) glycogenolysis. 
C) lipolysis. 
D) lipogenesis.

Question 2

As exercise intensity increases,there is a progressive increase in the reliance of carbohydrate metabolism in the exercising skeletal muscles.This fact has been described as the

Accepted Answer

A) substrate shift phenomenon. 
B) RQ effect. 
C) crossover concept. 
D) glycolytic surge. 
A) substrate shift phenomenon. 
B) RQ effect. 
C) crossover concept. 
D) glycolytic surge.

Question 3

The primary fuel source during prolonged (i.e. ,40-60 minutes),light-intensity (25% VO2 max)exercise is

Accepted Answer

A) muscle glycogen. 
B) blood glucose. 
C) muscle triglycerides. 
D) plasma FFA. 
A) muscle glycogen. 
B) blood glucose. 
C) muscle triglycerides. 
D) plasma FFA.

Question 4

The respiratory exchange ratio is often referred to as the respiratory quotient during steady-state exercise.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following factors are possible mechanisms to explain the lactate threshold?

Accepted Answer

A) low muscle oxygen 
B) recruitment of fast-twitch muscle fibers 
C) reduced rate of lactate removal from the blood 
D) All of the above answers are correct 
A) low muscle oxygen 
B) recruitment of fast-twitch muscle fibers 
C) reduced rate of lactate removal from the blood 
D) All of the above answers are correct

Question 6

Fat oxidation requires more oxygen than carbohydrate oxidation because carbohydrates contain LESS oxygen than fats.

Accepted Answer

A) True 
 B)False

Question 7

After the first few minutes of constant-load,submaximal exercise,VO2 reaches steady state,indicating that

Accepted Answer

A) the ATP demand is being met aerobically. 
B) levels of lactic acid in the blood are very high. 
C) the exercise can be continued indefinitely without fatigue. 
D) the oxygen uptake is not sufficient to meet the ATP demand. 
A) the ATP demand is being met aerobically. 
B) levels of lactic acid in the blood are very high. 
C) the exercise can be continued indefinitely without fatigue. 
D) the oxygen uptake is not sufficient to meet the ATP demand.

Question 8

Exercise trained individuals have a lower oxygen deficit;this may be due to

Accepted Answer

A) increased pulmonary lung capacity. 
B) increased levels of glycolytic enzymes in the trained muscle. 
C) a greater involvement of the ATP-CP energy system at the onset of exercise. 
D) having a better developed aerobic bioenergetic capacity. 
A) increased pulmonary lung capacity. 
B) increased levels of glycolytic enzymes in the trained muscle. 
C) a greater involvement of the ATP-CP energy system at the onset of exercise. 
D) having a better developed aerobic bioenergetic capacity.

Question 9

Lactate accumulation during exercise is a major cause of the muscle soreness that occurs 24-48 hours after exercising.
41.The exercise intensity at which blood lactate levels reach four millimoles per liter is often termed the onset of blood lactate accumulation (OBLA).

Accepted Answer

A) True 
 B)False

Question 10

Energy to run a maximal 400-meter race (i.e. ,50 to 60 seconds)comes from

Accepted Answer

A) aerobic metabolism exclusively. 
B) mostly aerobic metabolism with some anaerobic metabolism. 
C) a combination of aerobic/anaerobic metabolism,with most of the ATP coming from anaerobic sources. 
D) the ATP-CP system exclusively. 
A) aerobic metabolism exclusively. 
B) mostly aerobic metabolism with some anaerobic metabolism. 
C) a combination of aerobic/anaerobic metabolism,with most of the ATP coming from anaerobic sources. 
D) the ATP-CP system exclusively.

Question 11

The slow rise in oxygen consumption over time during submaximal,prolonged exercise in a hot environment is likely due to

Accepted Answer

A) high blood levels of lactic acid. 
B) rising body temperature. 
C) rising blood levels of insulin. 
D) a decrease in blood glucose levels. 
A) high blood levels of lactic acid. 
B) rising body temperature. 
C) rising blood levels of insulin. 
D) a decrease in blood glucose levels.

Question 12

VO2 max is determined by

Accepted Answer

A) the maximum ability of the cardiorespiratory system to deliver oxygen to the muscle. 
B) the ability of the muscle to take up and use oxygen to produce ATP. 
C) both A and B are correct. 
D) none of the above answers are correct. 
A) the maximum ability of the cardiorespiratory system to deliver oxygen to the muscle. 
B) the ability of the muscle to take up and use oxygen to produce ATP. 
C) both A and B are correct. 
D) none of the above answers are correct.

Question 13

A respiratory quotient (RQ)of 0.95 during steady-state exercise is suggestive of a(n)

Accepted Answer

A) high rate of carbohydrate metabolism. 
B) high rate of fat metabolism. 
C) equal rate of fat/carbohydrate metabolism. 
D) high rate of protein metabolism 
A) high rate of carbohydrate metabolism. 
B) high rate of fat metabolism. 
C) equal rate of fat/carbohydrate metabolism. 
D) high rate of protein metabolism

Question 14

The primary fuel source during high-intensity (85% VO2 max)exercise is

Accepted Answer

A) muscle glycogen. 
B) blood glucose. 
C) muscle triglycerides. 
D) plasma FFA. 
A) muscle glycogen. 
B) blood glucose. 
C) muscle triglycerides. 
D) plasma FFA.

Exam 5: Exercise Metabolism

The process of breaking down triglycerides into free fatty acids and glycerol is called

As exercise intensity increases,there is a progressive increase in the reliance of carbohydrate metabolism in the exercising skeletal muscles.This fact has been described as the

The primary fuel source during prolonged (i.e. ,40-60 minutes),light-intensity (25% VO2 max)exercise is

The respiratory exchange ratio is often referred to as the respiratory quotient during steady-state exercise.

Which of the following factors are possible mechanisms to explain the lactate threshold?

Fat oxidation requires more oxygen than carbohydrate oxidation because carbohydrates contain LESS oxygen than fats.

After the first few minutes of constant-load,submaximal exercise,VO2 reaches steady state,indicating that

Exercise trained individuals have a lower oxygen deficit;this may be due to

Lactate accumulation during exercise is a major cause of the muscle soreness that occurs 24-48 hours after exercising. 41.The exercise intensity at which blood lactate levels reach four millimoles per liter is often termed the onset of blood lactate accumulation (OBLA).

Energy to run a maximal 400-meter race (i.e. ,50 to 60 seconds)comes from

The slow rise in oxygen consumption over time during submaximal,prolonged exercise in a hot environment is likely due to

VO2 max is determined by

A respiratory quotient (RQ)of 0.95 during steady-state exercise is suggestive of a(n)

The primary fuel source during high-intensity (85% VO2 max)exercise is

Introduction to Exercise Physiology

A: Common Measurements in Exercise Physiology

B: Common Measurements in Exercise Physiology

Control of the Internal Environment

Bioenergetics

Cell Signaling and Hormonal Response to Exercise

Exercise and the Immune System

The Nervous System: Structure and Control of Movement

Skeletal Muscle: Structure and Function

Circulatory Responses to Exercise

Respiration During Exercise

Acid-Base Balance

Temperature Regulation

Physiology of Training: Effect on Vo2 Max, Performance, and Strength

Preventing Chronic Disease: Physical Activity and Healthy Eating

Work Tests to Evaluate Cardiorespiratory Fitness

Exercise Prescriptions for Health and Fitness

Exercise Prescriptions for Health and Fitness

Nutrition and Body Composition for Health

Factors Affecting Performance

Laboratory Assessment of Human Performance

Training for Performance

Training for the Female Athlete, Children, Special Populations, and the Masters Athlete

Nutrition, Body Composition, and Performance

Exercise and the Environment

Ergogenic Aids

Filters

The primary fuel source during prolonged (i.e. ,40-60 minutes),light-intensity (25% VO₂ max)exercise is

After the first few minutes of constant-load,submaximal exercise,VO₂ reaches steady state,indicating that

VO₂ max is determined by

The primary fuel source during high-intensity (85% VO₂ max)exercise is