Question

Alejandro is training for a half-marathon. He is now training for more than 90 minutes most days of the week. If Alejandro weighs 199 pounds, approximately how many grams of carbohydrate per day should he consume to maintain adequate muscle glycogen?

Multiple Choice

225–535 grams of carbohydrate per day


1194–1990 grams of carbohydrate per day


30–226 grams of carbohydrate per day


543–905 grams of carbohydrate per day

Answer 1

To determine how many grams of carbohydrates Alejandro should consume per day to maintain adequate muscle glycogen while training for a half-marathon, athletes typically need to consume carbohydrates in the range of 6-10 grams per kilogram of body weight per day, depending on the intensity and duration of their training.

First, let's convert Alejandro's weight from pounds to kilograms:

199 pounds ÷ 2.20462 = approximately 90.3 kilograms.

Now, we can calculate the carbohydrate needs:

- At 6 grams/kg: 90.3 kg × 6 g/kg = 541.8 grams
- At 10 grams/kg: 90.3 kg × 10 g/kg = 903 grams

So, Alejandro would ideally need between approximately 542 to 903 grams of carbohydrates per day.

The correct answer from the choices given is:

**543–905 grams of carbohydrate per day**.