ACE Personal Trainer Practice Exam

Which of the following is considered a high GI food?

1. Pumpernickel bread

2. Ice cream

3. Oatmeal

4. Plain yogurt

The correct answer is: Ice cream

High GI foods have a glycemic index of 70 or above, which means they quickly raise blood sugar levels. Ice cream, despite its fat content, typically has a high glycemic index because of the sugar present in it, generally resulting in an immediate spike in blood glucose levels. In contrast, the other options listed are considered low to moderate GI foods. Pumpernickel bread has a lower glycemic impact because it is made from whole grains, leading to a slower release of glucose. Oatmeal, particularly when it is minimally processed, has a low GI due to its high fiber content, which also slows digestion. Plain yogurt, especially if unsweetened, contains proteins and fats that contribute to a lower glycemic response. Therefore, among the choices given, ice cream stands out as having a high glycemic index, making it the correct answer.