CNC Weight Management & Body Composition Flashcards

Which method is considered the gold standard for measuring body fat percentage in a clinical setting?

Answer: Dual-energy X-ray absorptiometry (DEXA)

DEXA is considered the gold standard for body composition assessment because it provides accurate measurements of bone mineral density, lean mass, and fat mass.

A certified nutrition coach is working with a client whose BMI is 31. According to standard classifications, this client falls into which category?

Answer: Class I Obesity

A BMI of 30–34.9 is classified as Class I (moderate) obesity according to standard WHO and CDC guidelines.

What is the approximate caloric deficit per week required to lose one pound of body fat?

Answer: 3,500 calories

One pound of adipose tissue contains approximately 3,500 calories, so a 3,500-calorie weekly deficit is the traditional estimate for one pound of fat loss.

Which hormone, secreted by adipose tissue, signals satiety to the hypothalamus and decreases appetite?

Answer: Leptin

Leptin is an adipokine that communicates fat-store status to the brain, suppressing appetite when stores are sufficient.

When calculating Total Daily Energy Expenditure (TDEE), which component typically accounts for the largest portion of calorie burn?

Answer: Basal metabolic rate (BMR)

Basal metabolic rate typically represents 60–75% of TDEE, making it the single largest component of daily energy expenditure.

A nutrition coach wants to estimate a sedentary female client's BMR using the Mifflin-St Jeor equation. Which variables are required?

Answer: Age, height, weight, and sex

The Mifflin-St Jeor equation uses age (years), height (cm), weight (kg), and sex to calculate BMR without requiring an activity multiplier.