Energy Balance: 동영상 및 연습문제

Which statement best defines a zero energy balance?

If a student consumes 2,400 kcal/day and their total daily energy expenditure is 2,600 kcal/day, what is the daily energy balance and the expected short-term trend in weight?

Which of the following best explains why calculating energy expenditure is often more difficult than calculating energy intake?

A packaged meal lists per serving: fat 18 g, carbohydrates 45 g, protein 12 g. Calculate the total kilocalories per serving.

A homemade smoothie contains 6 g fat, 60 g carbs, 8 g protein and 10 g alcohol-equivalent (e.g., small amount from tincture). Calculate total kcal. (Use 9, 4, 4, 7 kcal/g respectively.)

A craft beer lists 12 g alcohol per bottle and 15 g carbohydrates, with negligible fat and protein. Calculate the kcal from the beer and evaluate which component contributes more to total energy.

An adult reports average daily intake of 2,100 kcal and an estimated TEE of 2,500 kcal. If this deficit is sustained for 14 days, estimate the expected short‑term weight change in kg, assuming 7700 kcal per kg of fat loss.

A trainee increases exercise burning an extra 350 kcal/day, but also adds a daily 250 kcal snack. If baseline intake matched expenditure initially, what is the new energy balance and likely direction of weight change?

Which simplification is most correct when using the energy balance equation for short-term predictions (days to a few weeks)?

Which of the following correctly pairs a TEE component with its typical percentage range of daily energy expenditure?

A recreationally active adult’s TEE is partitioned roughly as: BMR 60%, TEF 10%, physical activity 30%. Which component is most likely to change dramatically if they become an endurance athlete?

Two individuals have identical TEE. Person A: BMR 55%, TEF 10%, activity 35%. Person B: BMR 70%, TEF 10%, activity 20%. Which statement best explains likely differences in body size or lifestyle between them?

A person has a measured BMR of 1,400 kcal/day. Estimate a plausible range for their total energy expenditure (TEE) using TEF 5–15% of TEE and activity contributing 20–35% of TEE. Provide lower and upper TEE estimates.

Using the simplified approach that BMR accounts for 60% of TEE, estimate TEE for someone whose BMR is 1,650 kcal/day and then calculate TEF at 10% of that TEE and activity energy as the remainder.

An athlete aged 30 has a measured BMR of 1,900 kcal/day. Over a training season they increase activity energy from 600 to 1,200 kcal/day and TEF is estimated at 12% of TEE. Recalculate TEE at baseline (activity 600) and peak (activity 1,200), solving iteratively if TEF depends on TEE.

Which choice best describes how macronutrient composition affects TEF and the practical implication for diets aiming to increase energy expenditure via TEF?

A client proposes a diet high in processed protein bars, claiming high protein will maximize TEF and therefore burn more calories. Which evaluation is most accurate?

Which set of factors would most likely produce a higher BMR relative to body mass?

A 45-year-old woman loses 5 kg of lean mass while maintaining the same total body weight (fat mass increases to compensate), and her measured BMR decreases from 1,500 to 1,350 kcal/day. Calculate the percent decrease in BMR and explain which factor most likely caused the change.

A patient asks if they can 'exercise off' a daily 600 kcal dessert by adding exercise only. Which explanation best evaluates the feasibility?

Design a concise intervention combining dietary change and increased NEAT for someone who habitually consumes an extra 500 kcal/day, explaining expected impact on TEE and why the combination is preferred over exercise-only strategies.

You estimate a restaurant pasta entrée contains 80 g carbs, 20 g fat, and 25 g protein. Calculate estimated kcal and identify the largest potential source of error in this estimation.

Which factor most often creates underestimation of intake when people self-report food records for energy balance calculations?

Match the abbreviation to its correct meaning: TEF.

Which abbreviation refers to energy expended during exercise sessions specifically?

A dinner contains: grilled salmon 25 g protein, 10 g fat; buttered rice 15 g fat, 60 g carbs; glass of wine 14 g alcohol. Compute total kcal for the meal.

In interpreting a research abstract that reports a 20% increase in NEAT, which interpretation is most precise?