Do Kids Really Need Carbs During Games? (S)

Written By Lee Dunne

What Parents Should Understand About Energy, Fatigue, and Performance

If you’ve spent any time around youth soccer, you’ve probably heard things like:

  • “Make sure they carb-load.”

  • “They ran out of gas.”

  • “They need more pasta before tournaments.”

Carbohydrates (carbs) have long been seen as the magic fuel for performance. And yes — they matter. But the science behind why they matter is more interesting (and simpler) than most of us think.

Let’s break this down in a way that helps you make smart decisions for your child.

The Old Belief: “Muscles Run Out of Fuel”

For years, researchers believed athletes got tired mainly because their muscles ran out of stored carbs (called glycogen).

The idea was simple:

  • Muscles store carbs.

  • Exercise burns those carbs.

  • When they’re gone, performance drops.

This led to heavy emphasis on carb loading and constant fueling during long events.

But newer research tells a slightly different story.

The Newer Understanding: It’s About Blood Sugar and the Brain

Recent research reviewing over 100 years of studies suggests something important:

Fatigue during long exercise is strongly linked to low blood sugar — also called exercise-induced hypoglycemia (EIH).

In simple terms:

  • When blood sugar drops too low…

  • The brain senses danger…

  • The body slows down or stops.

This is protective. Your child’s body doesn’t want the brain running low on fuel.

So the real benefit of carbs during long exercise isn’t just “feeding the muscles.”

It’s helping maintain stable blood glucose levels so the brain keeps giving the green light to perform.

What This Means for Youth Soccer

Now let’s bring this back to your child.

Most youth soccer games last:

  • 60–90 minutes

  • With breaks

  • With variable intensity

In these situations, kids typically have enough stored energy — especially if they’ve eaten normal meals during the day.

Where carbs become more important:

  • Tournament days (multiple games)

  • High school matches after a long school day

  • 2–3+ hour training blocks

  • Kids who didn’t eat much beforehand

In longer efforts (2–3 hours or more), low blood sugar becomes more likely — and that’s when simple carbs during play can help.

Important: Muscles Don’t “Shut Down” When Glycogen Is Low

One of the most surprising findings in recent research:

Even athletes with low muscle glycogen (low stored carbs) can still perform well — as long as blood glucose stays stable.

Some high-fat-adapted athletes (who eat fewer carbs regularly) perform at high levels despite using less carbohydrate overall.

This challenges the idea that carbs are the only fuel for performance.

The body is adaptable.

So… Should My Kid Eat Carbs During Games?

Here’s a simple guide for parents:

For Single Games (Under 90 Minutes)

  • A normal balanced meal 2–3 hours before is enough.

  • A small snack 30–60 minutes before (banana, toast, granola bar) is helpful.

  • Water is usually sufficient during the game.

For Tournament Days or Long Sessions

  • Eat normally between games.

  • Include easy-to-digest carbs (fruit, pretzels, simple sandwiches).

  • A small carb source during long play (sports drink, orange slices) can help maintain blood sugar.

For Kids Who “Fade” Late in Games

Before assuming fitness is the problem, ask:

  • Did they eat enough earlier?

  • Was school lunch small?

  • Was the game late at night?

  • Was there a long gap between meals?

Sometimes “running out of gas” is simply low blood sugar.

The Bigger Takeaway for Parents

Carbs are not magic.

They are a tool.

Their primary benefit during long exercise is helping maintain stable blood sugar — which helps the brain keep the body performing.

For youth players:

  • Consistent meals matter more than carb loading.

  • Stable energy matters more than sugar spikes.

  • Hydration and sleep matter just as much.

And remember:

Fatigue is not always about fuel.
It can also be about growth, stress, fitness, confidence, or recovery.

What This Means for Player Development

As parents, your job isn’t to micromanage macronutrients.

It’s to:

  • Ensure regular meals.

  • Avoid long gaps without food.

  • Support recovery.

  • Keep food simple and consistent.

Elite performance nutrition is nuanced. Youth development nutrition is about stability.

When in doubt:
Feed them real food.
Keep it balanced.
And let them play.

Sourced from - https://academic.oup.com/edrv/advance-article/doi/10.1210/endrev/bnaf038/8432248?login=false

Lee Dunne
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