Question 1

Adipose tissue in people who engage in regular physical activity appears to becomes more sensitive to catecholamines.This advantage is lost when people stop exercising.

Accepted Answer

Regular physical activity increases the sensitivity of adipose tissue to catecholamines. This is likely due to changes in receptor density and signaling pathways. However, if people stop exercising, this advantage is lost as the adipose tissue returns to its previous state.

Question 2

People who are taking beta-blockers cannot use calculated HR as an indicator of exercise intensity.

Accepted Answer

Beta-blockers can lower heart rate and therefore calculated HR may not accurately reflect exercise intensity for individuals taking them. Other indicators, such as perceived exertion, may need to be used to determine exercise intensity.

Question 3

The American College of Sports Medicine (ACSM)suggests that several 10 minute activity segments can be just as effective as one continuous exercise session for low fitness individuals.

Accepted Answer

The ACSM does suggest that several 10 minute activity segments can be just as effective as one continuous exercise session for low fitness individuals. This is because breaking up exercise into shorter segments can make it more manageable and increase adherence to a regular exercise routine.

Question 4

Men may be more inclined than women to increase calorie consumption following exercise.

Accepted Answer

The answer of Men may be more inclined than women...

Question 5

To monitor the intensity of exercise using HR, an individual needs to pause for a minimum of 60 seconds during exercise.

Accepted Answer

To monitor the intensity of exercise using HR, an individual does not need to pause for a minimum of 60 seconds during exercise. Heart rate can be monitored continuously during exercise using devices such as heart rate monitors or fitness tracking apps.

Question 6

As people get older, the MET value that corresponds with moderate activity progressively increases.

Accepted Answer

The MET value (Metabolic Equivalent of Task) for an activity does not change based on a person's age; it is a constant value used to estimate the energy expenditure of physical activities. What may change is how an individual's fitness or health condition affects their ability to perform activities at those standard MET levels.

Question 7

Research shows that physical activity must be continuous to be effective.

Accepted Answer

Research indicates that physical activity can be accumulated in shorter bouts throughout the day and still be effective for health benefits, rather than needing to be continuous.

Question 8

Exercisers often lose less weight than dieters.

Accepted Answer

It is common for people who exercise to simultaneously build muscle while losing fat, which can result in less overall weight loss compared to those who focus solely on calorie restriction through dieting. However, exercise has numerous health benefits and can still contribute to long-term weight loss and weight management.

Question 9

Exercisers lose less fat than individuals who follow calorie restricted diets.

Accepted Answer

This statement is false. Exercisers can actually lose more fat than those who only follow calorie restricted diets because exercise helps to increase muscle mass and boost metabolism, leading to long-term weight loss. It is important to combine both exercise and a healthy diet for optimal results.

Question 10

Low intensity physical activity suppresses food consumption to a greater degree than high intensity physical activity.

Accepted Answer

High intensity physical activity tends to suppress appetite more immediately due to the release of appetite-suppressing hormones like peptide YY and glucagon-like peptide-1, whereas low intensity physical activity may not have as strong an immediate effect on appetite suppression.

Question 11

Skeletal muscle 3-hydroxyacyl COA dehydrogenase (HADH)levels increase after high intensity interval and endurance training.

Accepted Answer

The answer of Skeletal muscle 3-hydroxyacyl COA dehydrogenase (HADH)levels increase...

Question 12

Even with personal trainers and high amounts of physical activity, most people who lose weight regain some of it.

Accepted Answer

This is a common phenomenon known as weight cycling or yo-yo dieting where people lose weight, but then regain some or all of it back over time. It typically occurs due to the body's natural urge to maintain a certain weight and the challenges of sustaining lifestyle changes in the long term. However, this doesn't mean that weight loss is not beneficial or that efforts towards a healthier lifestyle are futile - even modest weight loss can have significant health benefits.

Question 13

Lean tissue is always lost when low calorie diets are followed, whereas fats account for the majority of weight lost through physical activity.

Accepted Answer

Lean tissue is lost when low calorie diets are followed because the body breaks down muscle tissue for energy. Fats account for the majority of weight lost through physical activity because exercise burns calories and fat is the body's main source of energy.

Question 14

Heart rate increases proportionately with oxygen uptake, so HR can be used to gauge the intensity of exercise in place of VO₂max testing.

Accepted Answer

This is true. Heart rate is a good indicator of exercise intensity and can be used as an alternative to V02max testing. As the body requires more oxygen during exercise, the heart rate will increase to supply the muscles with the necessary oxygen. By monitoring heart rate during exercise, one can gauge the intensity level and adjust accordingly.

Question 15

Higher amounts of activity are needed to prevent weight regain than the U.S.government recommends for health.

Accepted Answer

Studies have shown that higher amounts of physical activity are needed to prevent weight regain than the U.S. government's recommended 150 minutes of moderate intensity activity per week for overall health. This is because weight regain requires greater energy balance than weight loss. Therefore, individuals who have lost weight and want to maintain their weight loss may need to engage in 60-90 minutes of moderate intensity activity per day.

Question 16

Lipids make their greatest contribution to metabolism during exercise at about 65% of maximal oxygen uptake (VO₂max).

Accepted Answer

During moderate- to low-intensity exercise, the body relies primarily on fat metabolism for energy, making up about 65% of the body's total energy expenditure. As exercise intensity increases, carbohydrate metabolism becomes more important.

Question 17

Smokers, even young people in good health, may have a blunted HR response to exercise.

Accepted Answer

Smoking can have a negative impact on cardiovascular function, and studies have shown that smokers may have a decreased heart rate response to exercise compared to non-smokers. This can increase the risk of heart disease and other health issues in the long run, even for young people who appear to be in good health.

Question 18

People who engage in regular activity and improve their physical fitness use more lipids for fuel and begin burning fat earlier during exercise.

Accepted Answer

Regular activity and improved physical fitness can lead to an increased ability to burn fat for fuel during exercise, as the body becomes more efficient at using lipids for energy. This is because exercise stimulates the production of enzymes that break down fats, and regular activity can lead to an increase in the number and size of fat-burning mitochondria in muscle cells.

Question 19

There is a great deal of individual variation in appetite response to physical activity.

Accepted Answer

Different people can have varying responses to physical activity when it comes to their appetite. Some people may experience increased hunger while others may experience decreased hunger. This can depend on various factors such as genetics, prior eating habits, and the intensity and duration of the physical activity.

Question 20

About the same amount of exercise is needed to improve fitness as is needed to improve health.

Accepted Answer

Improving health generally requires less physical activity than improving or maintaining fitness levels. Health benefits can be achieved with moderate-intensity activities, while improving fitness often requires more intense and frequent exercise sessions.

Quiz 7: Physical Activity, Health, and Weight Management