AFAA Personal Trainer Certification Practice Exam

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What is the caloric content of 1 gram of carbohydrate?

4 calories
9 calories
7 calories
6 calories

The correct answer is: 4 calories

The caloric content of 1 gram of carbohydrate is 4 calories. This is a well-established nutritional fact and is fundamental to understanding macronutrient energy values. Carbohydrates serve as a vital source of energy for the body, particularly for high-intensity exercise. Knowing that each gram of carbohydrate provides 4 calories is essential for personal trainers when calculating caloric intake and formulating nutrition plans for clients. In contrast, the caloric values for other macronutrients differ: 1 gram of fat contains approximately 9 calories, while protein also provides about 4 calories per gram. Understanding these distinctions is crucial when guiding clients through dietary choices and changes to meet their fitness goals.