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 1.0 lb, how many pounds did he lose?

Verified step by step guidance

1. Identify the total number of kilocalories (kcal) expended by Charles during the week from part a.
2. Understand the conversion factor: 3500 kcal is equivalent to a loss of 1.0 lb.
3. Set up a proportion to find the number of pounds lost: (Total kcal expended) / 3500 kcal = (Pounds lost) / 1.0 lb.
4. Solve the proportion for the number of pounds lost by multiplying both sides by 1.0 lb.
5. Interpret the result to understand how many pounds Charles lost based on his total kcal expenditure.

Key Concepts

Caloric Deficit

A caloric deficit occurs when the number of calories expended through physical activity and metabolic processes exceeds the number of calories consumed through food and drink. This deficit is crucial for weight loss, as it leads the body to utilize stored fat for energy, resulting in a decrease in body weight.

Weight Loss Calculation

Weight loss can be quantified by understanding the relationship between caloric expenditure and weight. Specifically, a deficit of approximately 3500 kcal is generally accepted to result in a loss of about 1 pound of body weight. This principle allows individuals to estimate their weight loss based on their caloric balance over a specific period.

Exercise and Energy Expenditure

Exercise significantly contributes to total energy expenditure, which includes the calories burned during physical activity. The type, intensity, and duration of exercise all influence how many calories are burned, making it essential to accurately assess these factors when calculating weight loss related to exercise routines.