b. For the amount of exercise that Charles did for one week in part a, if expending 3500 kcal is equal to a loss of 1.0lb, how many pounds did he lose?

Verified step by step guidance

1. Identify the total number of kilocalories (kcal) Charles expended during the week from part a.
2. Understand the conversion factor given: 3500 kcal is equivalent to a loss of 1.0 lb.
3. Set up a proportion to find out how many pounds Charles lost by dividing the total kcal expended by 3500 kcal/lb.
4. Perform the division to determine the number of pounds lost.
5. Ensure the units are consistent and the calculation reflects the relationship between kcal and pounds lost.

Key Concepts

Caloric Expenditure

Caloric expenditure refers to the total number of calories burned by the body during physical activity and daily functions. It is influenced by factors such as exercise intensity, duration, and individual metabolic rates. Understanding caloric expenditure is crucial for determining weight loss, as a deficit between calories consumed and calories burned leads to weight loss.

Weight Loss Calculation

Weight loss can be calculated based on the caloric deficit created by exercise and dietary choices. Specifically, a deficit of approximately 3500 kcal is generally accepted to result in a loss of 1 pound of body weight. This relationship helps individuals estimate how much weight they can lose based on their caloric expenditure and intake.

Energy Balance

Energy balance is the relationship between calories consumed through food and beverages and calories expended through physical activity and metabolic processes. A positive energy balance leads to weight gain, while a negative balance results in weight loss. Understanding this concept is essential for managing body weight effectively, especially in the context of exercise and dietary habits.