AFAA Personal Trainer Certification Practice Exam

What is the method for calculating glycemic load?

1. Multiplying grams of carbohydrates by glycemic index

2. Dividing total carbohydrates by dietary fiber

3. Adding the glycemic index to total sugars

4. Subtracting protein content from total calories

The correct answer is: Multiplying grams of carbohydrates by glycemic index

The method for calculating glycemic load involves taking into account both the amount of carbohydrates in a food and how quickly those carbohydrates affect blood sugar levels. This is achieved by multiplying the grams of carbohydrates in a serving of food by its glycemic index (GI). The glycemic index is a numerical scale that ranks carbohydrates in foods according to how much they raise blood glucose levels compared to pure glucose. This calculation provides a more comprehensive view of how a specific food may influence blood sugar when consumed, accounting for both the quality (as indicated by the glycemic index) and the quantity of carbohydrates. As a result, glycemic load can reflect more realistic impacts on glucose levels, particularly for foods that may not be as high in carbohydrates but have a high glycemic index. This makes it a valuable tool for managing diet, especially for individuals concerned about blood sugar control. The other options do not correctly represent the principles of glycemic load calculation, which is specifically focused on the interaction between carbohydrates and their glycemic index. Understanding this formula is crucial for making informed dietary choices, especially for those managing conditions like diabetes or following specific nutrition plans.