Question 1

Explain how the circulatory and respiratory systems work together to get oxygen to the muscles.

Accepted Answer

The answer of Explain how the circulatory and respiratory systems...

Question 2

Aerobic metabolism can use glucose and fat, but not protein, to generate energy.

Accepted Answer

Aerobic metabolism can use glucose, fat, and protein to generate energy. Proteins, when broken down into amino acids, can be converted into glucose or other intermediates that enter the aerobic energy production pathways.

Question 3

As compared to medium intensity activity, such as running for 45 minutes, amino acids are used at a _____ rate and glucose at a _____ rate for fuel during high intensity exercise, such as sprinting 100 yards.

Accepted Answer

During high-intensity exercise, the body primarily relies on glucose for quick energy, leading to a higher rate of glucose usage, while amino acids are used at a lower rate compared to medium intensity activities.

Question 4

The majority of creatine phosphate is found in the liver.

Accepted Answer

The majority of creatine phosphate is actually found in muscle tissue, not the liver.

Question 5

The physiological changes that occur from aerobic training increases cellular ability to burn fatty acids for fuel.

Accepted Answer

During aerobic training, the body adapts by increasing the number and size of mitochondria in cells, which allows them to better utilize fatty acids for energy production through oxidative metabolism. This leads to increased endurance and improved utilization of fat as a fuel source during exercise.

Question 6

Which of the following statements regarding ATP production is FALSE?

Accepted Answer

The majority of ATP is not produced by anaerobic metabolism, as it only generates a small amount of ATP. Most ATP is produced by aerobic metabolism, which requires oxygen, in the mitochondria. Carbohydrates, fats, and protein can all be used to produce ATP through various metabolic pathways.

Question 7

The amount of ATP produced by anaerobic versus aerobic metabolism depends on the:

Accepted Answer

Aerobic metabolism relies on the presence of oxygen to produce ATP, while anaerobic metabolism can occur without oxygen but produces much less ATP. Therefore, the amount of ATP produced is dependent on the availability of oxygen. The other factors mentioned (amount of glycogen, availability of amino acids, pH of the blood) may play a role in metabolism but do not directly affect the amount of ATP produced.

Question 8

Aerobic exercise is considered to be at an intensity of _____ % of maximum heart rate.

Accepted Answer

Aerobic exercise is typically performed at a moderate to vigorous intensity, which generally falls within the range of 60-85% of maximum heart rate. This level of intensity is considered to be effective for improving cardiovascular endurance and overall fitness. Lower intensities may be appropriate for beginners or those with medical conditions, while higher intensities may be more appropriate for high-level athletes or for interval training.

Question 9

As fitness improves, an exerciser must perform more intense activity to raise his heart rate.

Accepted Answer

As fitness improves, the heart becomes more efficient at pumping blood, requiring more intense activity to reach higher heart rates.

Question 10

The predominate fuel used by muscle during a 10K race (~50 minutes) is

Accepted Answer

During a 10K race, the main source of fuel for muscles is carbohydrate, which can be stored as glycogen in the muscles and liver. This glycogen can be broken down into glucose and used as energy during exercise. While some fat may also be used as fuel during lower-intensity exercise, carbohydrate is the primary fuel source for higher-intensity exercise like a 10K race. Creatine phosphate is a quick source of energy for very short bursts of muscle activity, while protein is not a significant fuel source during exercise.

Question 11

If you do not rest enough between exercise sessions, which of the following statements is correct?

Accepted Answer

Adequate rest is crucial for recovery and adaptation processes following exercise. Without sufficient rest, the body cannot properly recover or improve, leading to stagnation or decline in both fitness and performance.

Question 12

Overtraining syndrome only occurs in serious athletes who are training extensively.

Accepted Answer

Overtraining syndrome can occur in anyone who exercises excessively, not just serious athletes.

Question 13

Kandie is a sedentary, overweight female college student. Although her blood lipids and blood sugar are normal, she has a family history of type 2 diabetes and heart disease. She has decided to begin a fitness program by walking and has asked for your advice. What would be your advice for her 1st week of exercise?

Accepted Answer

The answer of Kandie is a sedentary, overweight female college...

Question 14

Resting between exercise sessions is important because it

Accepted Answer

Resting between exercise sessions allows the body to replenish energy stores, repairs damaged tissues, and strengthens muscles. All of these statements are true. Resting also helps prevent injuries and can improve overall workout performance.

Question 15

As compared to medium intensity exercise, such as hiking, fatty acids are used at a_____ rate and glucose at a _____ rate for fuel during rest.

Accepted Answer

During rest, the body primarily relies on fatty acids for energy, using them at a higher rate compared to glucose, which is used at a lower rate.

Question 16

This diagram is an overview of the frequency of types of activities that are recommended to include in a fitness program. Josh is a 20 year old college student, who is interested in beginning a fitness program. For each section in this graph, provide an overview of the goal for each section and the types of activities that Josh can do to meet each goal.

Accepted Answer

The answer of This diagram is an overview of the...

Question 17

JD is a 23 year old male, and his target heart rate for exercise is 70% of his maximum heart rate. What is JD's maximum heart rate (beats per minute)? What is his target heart rate (beats per minute). Use the graph attached and plot JD's target heart rate. Is JD's target heart rate in the aerobic zone?

Accepted Answer

The answer of JD is a 23 year old male,...

Question 18

Which of the following does NOT impact the ability of the circulatory and respiratory systems to deliver oxygen to the tissues?

Accepted Answer

While age can affect physical conditioning, it is not a direct factor in the ability of the circulatory and respiratory systems to deliver oxygen to the tissues. The duration, intensity, and physical conditioning of the exerciser all directly impact oxygen delivery.

Question 19

Based on this visual, which of the following statements about metabolism is FALSE?

Accepted Answer

Anaerobic metabolism only utilizes certain sources of fuel, such as glucose and glycogen. It cannot utilize fatty acids or other molecules for ATP production.

Question 20

The most common symptom of overtraining syndrome is

Accepted Answer

Fatigue, even at rest, is the most common symptom of overtraining syndrome. Other symptoms may include mood disturbances, decreased performance, persistent soreness, increased resting heart rate, and more. Elevated body temperature, thirst, and concentrated urine are not necessarily indicative of overtraining syndrome.

Quiz 10: Nutrition, Fitness, and Physical Activity