Nutrition and Energy Expenditure Quiz

Which of the following statements about popular diets is incorrect?

• They promote quick weight loss that ends up being primarily water and lean muscle mass.

• They help people make permanent changes in eating habits and behaviors.

• They often recommend expensive supplements or meals.

• They often use personal testimonials from famous people to promote their product.

Which of the following is true in relation to the components of energy expenditure?

• The thermic effect of food represents about 20% to 35% of total energy expenditure.

• Physical activity accounts for 15% to 30% of total energy expenditure.

• Basal metabolism accounts for 85% to 100% of total energy expenditure.

• Fidgeting accounts for 40% of total energy expenditure.

Mindy has been following a weight-loss plan for the past five months, but she has reached a plateau. It seems like she cannot lose any more weight. A good strategy to stimulate further weight loss is to

• increase physical activity.

• go off the weight control program and take a break.

• eliminate dairy products.

• further reduce food intake to 1000 kcal per day.

John weighs 80 kilograms and is 1.6 meters tall. His body mass index is ______ kg/m2.

• 5

• 25

• 31

• 50

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?

• Her frequent yo-yo dieting have likely led to greater amounts of lean body mass.

• Her problem is genetic and there is no reason for her to attempt to lose weight.

• When she ends a diet, she likely regains additional body fat.

• Her problem results from poor habits, but genetics will prevent her from ever losing weight.

Of the most common methods of estimating body composition, which is the most accurate?

• Dual-energy X-ray absorptiometry

• Skinfold measures

• Air displacement plethysmography

• Bioelectrical impedance analysis

Exercise activity thermogenesis (EAT) refers to

• the energy burned during intentional physical activity.

• the energy burned during shivering, sweating, and hydrating.

• the energy burned during spontaneous movements (including fidgeting).

• the energy burned during sleeping, eating, and talking.

The thermic effect of food

• represents the calories needed to digest, absorb, and process ingested food.

• represents approximately 25% of total energy expenditure.

• is included in the measurement of basal metabolism.

• refers to energy expended to produce heat in response to a cold environment.

According to the Dietary Guidelines, saturated fat intake should be less than 10% of total calories beginning at age

• one.

• two.

• ten.

• eighteen.

Which of the following factors do not contribute to total energy expenditure?

• Basal metabolic rate

• Thermic effect of food

• Energy content of food

• Adaptive thermogenesis