Question 1

Peg's parents are both obese.She has dieted at least six times,each time losing a considerable amount of weight and subsequently regaining it.Peg does not exercise.Which of the following is true about Peg's situation?

Accepted Answer

The information provided suggests that Peg has a pattern of losing weight through dieting and then regaining it. This cycle of weight loss and gain is often referred to as yo-yo dieting, and research has shown that it can result in a greater percentage of fat being regained after each diet cycle. Therefore, when Peg ends a diet, she is likely to regain additional body fat.

Question 2

How would you interpret the body mass index for a woman who is 1.63 meters tall and weighs 72 kilograms?

Accepted Answer

To interpret the body mass index (BMI) for a woman who is 1.63 meters tall and weighs 72 kilograms, we first calculate her BMI using the formula: BMI = weight (kg) / (height (m))^2. Thus, BMI = 72 / (1.63)^2 ≈ 27.1. According to the World Health Organization (WHO) classification, a BMI between 25 and 29.9 is considered overweight, which means she slightly exceeds the value at which health risks are increased, but it does not necessarily indicate high health risks or significant android obesity.

Question 3

What would be the approximate weight gain,in pounds,of a person who consumes an excess of 500 kilocalories daily for one month?

Accepted Answer

One pound of body fat is equal to approximately 3500 calories. Therefore, gaining one pound of body fat would require a surplus of 3500 calories. Consuming an excess of 500 kilocalories daily for one month (which has 30 days) would result in a surplus of 500 x 30 = 15,000 kilocalories. Converting this to calories, we have 15,000 x 1,000 = 15,000,000 calories. Dividing this by 3,500 (the number of calories in one pound of body fat) gives us approximately 4.28 pounds. However, the question asks for the approximate weight gain in pounds, so the answer would be 4 pounds (since we cannot have fractional pounds). Therefore, the best choice is C.

Question 4

Which of the following is not a tool for measuring body fatness?

Accepted Answer

Body mass index (BMI) is a measure of body weight relative to height, not a direct measure of body fatness. The other options (B: Bioelectrical impedance, C: Skinfolds, D: Underwater weighing) are direct or indirect methods for measuring body composition, including fatness.

Question 5

Which of the following is not a characteristic of a sound weight-loss program?

Accepted Answer

A weight-loss program with a minimum weight loss goal of at least 3 to 5 pounds per week is not considered healthy or sustainable. A safe and effective weight loss is typically 1-2 pounds per week. This rapid rate can be achieved through extreme and often unhealthy methods that can be harmful to the body. Therefore, C is not a characteristic of a sound weight-loss program.

Question 6

Mary wishes to lose 5 pounds before her vacation in approximately 5 weeks.Her average consumption is 2,100 kilocalories per day.How many kilocalories should she consume daily to begin to lose this weight,assuming her activity pattern remains unchanged?

Accepted Answer

To lose 5 pounds in 5 weeks, she needs a deficit of about 500 calories per day. Reducing her intake from 2,100 to 1,600-1,700 calories per day would create this deficit.

Question 7

A daily deficit of 500 kilocalories should result in an approximate weight loss of about how many pounds per week?

Accepted Answer

A daily deficit of 500 kilocalories results in a weekly deficit of 3500 kilocalories, which is approximately equivalent to 1 pound of weight loss.

Question 8

When attempting to use body fat percentage to define obesity,body fat above ______ for women results in an obesity diagnosis.

Accepted Answer

The answer of When attempting to use body fat percentage...

Question 9

Which of the following testing methods is considered the most accurate way of measuring percent body fat?

Accepted Answer

Underwater weighing, also known as hydrostatic weighing, is considered the most accurate way of measuring percent body fat. This method involves submerging the person in water and measuring the amount of water displaced, which can then be used to determine their body density and subsequently their percent body fat. Skinfold measurements and bioelectrical impedance are commonly used and less expensive methods, but they may have a higher potential for error. Infrared light is not a commonly used method for measuring percent body fat.

Question 10

Body weight in kilograms divided by height squared in meters yields

Accepted Answer

Body weight in kilograms divided by height squared in meters yields the body mass index (BMI). It is a standardized measure that helps to classify individuals as underweight, normal weight, overweight, or obese.

Question 11

Men with body fat levels greater than _____ have increased health risks.

Accepted Answer

According to the American Council on Exercise, men with body fat levels greater than 24% are considered to have increased health risks. Therefore, the best choice is B.

Question 12

As one finds his or her weight loss slowing down during a weight control program,the best practice is to

Accepted Answer

When weight loss slows down during a weight control program, it may be helpful to increase the type or intensity of physical activity. This can help burn more calories and boost weight loss. Restricting more food choices or reducing food intake to extremely low levels can be dangerous and may lead to nutrition deficiencies or disordered eating habits. Stopping the weight control program and taking a break may also lead to weight regain. Therefore, increasing physical activity is the best option.

Question 13

Which of the following health conditions is not related to android obesity?

Accepted Answer

Android obesity (also known as central obesity) is characterized by excess fat accumulation in the abdominal area. This type of obesity is associated with increased risk for heart disease, diabetes mellitus, and hypertension. However, there is no direct relationship between android obesity and lung cancer.

Question 14

When attempting to use body fat percentage to define obesity,body fat above _______ for men results in an obesity diagnosis.

Accepted Answer

Body fat percentage is a more accurate measure of obesity than BMI (body mass index) because it takes into account the amount of fatty tissue in the body, instead of just overall weight. A body fat percentage above 24% for men is generally considered to be in the obesity range.The other options are too low to result in an obesity diagnosis based on body fat percentage.

Question 15

For a woman who is 1.63 meters tall and weighs 72 kilograms,the body mass index would equal

Accepted Answer

The formula to calculate body mass index (BMI) is BMI = weight in kilograms / (height in meters)^2. 
Using the given values, BMI = 72 / (1.63)^2 = 27. Therefore, the answer is choice C. A BMI between 25 and 30 is considered overweight.

Question 16

Which of the following is not correct about android obesity?

Accepted Answer

Android obesity refers to the accumulation of fat in the upper body, particularly in the abdominal region. A low waist-to-hip ratio (i.e. a larger hip circumference compared to waist circumference) is actually indicative of gynoid obesity, which is the accumulation of fat in the lower body. High testosterone levels can contribute to android obesity, and it is indeed related to an increased risk of heart disease, hypertension, and diabetes mellitus.

Question 17

Which of the following is an important aspect of behavior modification used for weight control?

Accepted Answer

Recording eating behavior is a key aspect of behavior modification used for weight control. By keeping a record of what and when you eat, emotions, and situations, you can identify patterns and triggers for overeating and make changes accordingly. Options A, B, and D are not effective or advisable strategies for weight control. Severely restricting intake or weighing yourself frequently can lead to an unhealthy relationship with food and worsen disordered eating behaviors, while avoiding planned eating can lead to overeating and poor food choices.

Question 18

The MyPlate Calorie Guideline for a 19- to 30-year-old active woman is

Accepted Answer

The MyPlate guidelines suggest that an active woman aged 19-30 should consume about 2400 kilocalories per day to maintain her energy balance and support her activity level.

Question 19

Altering the environment to minimize the stimuli for eating is called

Accepted Answer

Stimulus control involves altering the environment to minimize the stimuli for eating, such as removing tempting foods from sight or avoiding places or situations that trigger overeating. Chain-breaking, contingency management, and cognitive restructuring are also strategies for weight management, but they are not specific to altering the environment.

Question 20

Which of the following is not an appropriate goal for weight control programs?

Accepted Answer

Losing 5 pounds per week is not a safe or realistic goal for weight control programs. A safe and sustainable weight loss goal is around 1-2 pounds per week. Rapid weight loss can lead to muscle loss and may be difficult to maintain long-term.

Quiz 7: Energy Balance and Weight Control