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Updated: Jun 3, 2026

Adult and Pediatric Porcine Model of Acute Volume Overload

Adult and Pediatric Porcine Model of Acute Volume Overload

Published on: January 12, 2024

Fluid replacement requirements for child athletes.

Thomas Rowland¹

¹Baystate Medical Center, Springfield, Massachusetts 01199, USA. Thomas.rowland@bhs.org

Sports Medicine (Auckland, N.Z.)

|March 24, 2011

Summary

Young athletes need specific hydration strategies. Coaches and parents must ensure adequate fluid intake during and after exercise to prevent dehydration and maintain sports performance.

Area of Science:

Exercise Physiology
Pediatric Sports Medicine
Thermoregulation

Background:

Thermoregulatory responses during exercise vary between prepubertal and adult athletes.
Understanding unique fluid requirements in young athletes is crucial for preventing dehydration and optimizing performance.
Children exhibit lower sweat water losses relative to body size but similar dehydration percentages compared to adults.

Purpose of the Study:

To outline specific fluid intake recommendations for prepubertal athletes.
To emphasize the importance of hydration for preventing dehydration and enhancing sports performance in young athletes.
To guide coaches and parents on appropriate hydration strategies for child athletes.

Main Methods:

Comparative analysis of thermoregulatory responses and fluid balance in pre- vs. postpubertal athletes.

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Assessment of voluntary fluid intake (ad libitum drinking) in children during exercise.

Calculation of recommended hourly fluid intake and post-exercise rehydration volumes based on body weight.

Main Results:

Children's voluntary fluid intake relative to body size is comparable to or greater than adults'.
Thirst-driven intake, with adequate drinking opportunities, can prevent significant dehydration in child athletes.
Recommended fluid intake: 13 mL/kg/hour during exercise and 4 mL/kg/hour post-exercise.

Conclusions:

Fluid intake volume, driven by taste preference, is more critical than fluid content for young athletes.
Coaches and parents play a vital role in ensuring proper hydration behaviors in child athletes.
Consistent hydration during and after exercise is essential to prevent dehydration and support athletic performance in youth.