AFAA Personal Trainer Certification Practice Exam

Disable ads (and more) with a membership for a one time $4.99 payment

Prepare for the AFAA Personal Trainer Certification with engaging quizzes and resources. Our platform provides a variety of questions to test your knowledge and skills, ensuring you're ready for the certification exam!

Practice this question and more.


What type of carbohydrate is primarily comprised of indigestible substances?

  1. Soluble Carbohydrates

  2. Complex Carbohydrates

  3. Fiber

  4. Simple Carbohydrates

The correct answer is: Fiber

The correct choice focuses on fiber, which is a type of carbohydrate primarily composed of indigestible substances. Unlike other carbohydrates that can be broken down into glucose for energy, fiber passes through the digestive system mostly intact. It plays a crucial role in maintaining digestive health by promoting regular bowel movements and preventing constipation. Fiber can be classified into two types: soluble and insoluble. Soluble fiber dissolves in water and can help lower blood cholesterol and glucose levels, while insoluble fiber adds bulk to stool and aids in digestion. Understanding fiber's role in the diet emphasizes its importance beyond energy provision. It contributes to overall health by influencing various physiological functions, making it an essential component of a balanced nutrition plan. In the context of the other options, soluble carbohydrates and complex carbohydrates refer to digestible forms which break down into sugars, while simple carbohydrates are quickly converted into glucose and do not provide the same health benefits as fiber.