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Completed

NCT Number: NCT06992817

The Impact of Brief One-time Education and Coach Encouragement on Hydration Status in Child Judo Athletes

Due to the lack of any comparative study related to effect of different hydration processes, this study aimed to compare the effectiveness of coach encouragement and hydration education in maintaining hydration status in child judo athletes

Completed

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Key information

Conditions

Dehydration in Children Dehydration Metabolic Diseases Nutritional and Metabolic Diseases Pathologic Processes Pathological Conditions, Signs and Symptoms Water-Electrolyte Imbalance

Age range

9 year–13 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Primary location

Bartın Judo Hall

Bartın, 74100, Turkey (Türkiye)

About this study

Forty-seven athletes participated in a four-day training camp, during which hydration status was assessed before and after training sessions under three different conditions: no intervention (control), coach-guided fluid intake encouragement, and pre-training brief one-time hydration education. Athletes were unaware of the intervention conditions assigned to each day, and the educational session was delivered without emphasizing its experimental nature. To minimize potential carryover effects, the sequence of interventions was fixed. Hydration status was objectively monitored using urine specific gravity (USG) and urine color (UC) measurements.

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • having at least three years of judo experience
  • having at least a green belt
  • being healthy enough to attend all training sessions during the camp.

Exclusion criteria

  • having less than three years of judo experience
  • having orange belt or lower
  • not being healthy enough to attend all training sessions during the camp.

Treatment and study plan

Hydration-Coach Encouragement

Behavioral

Athletes were encouraged by their coaches to consume fluids during the training session.

Other names: Encouragement

Short Hydration Informative Session

Behavioral

Athletes were given a brief educational session related to importance of hydration before the exercise session.

Other names: A brief hydration education

Primary outcomes

  1. hydration status (i.e., urine specific gravity and urine colour)

    Time frame: 4 days

    A urine sample was taken from each athlete one hour before and immediately after the exercise sessions. The samples were placed in plastic cups and USG was determined with a digital refractometer (ATAGO PAL-10S, Japan) in the training hall by the same researcher each time. USG measurements were carried out after the urine samples were refrigerated to temperature of 20° and UC was classified under LED light condition. As soon as the urine samples were analyzed for USG and classified for urine colour (UC), they were immediately disposed. USG was classified according to suggestion by National Athletic Trainers' Association as hydrated (USG <1.020) and hypohydrated (USG≥1.020).

Sponsors and collaborators

Lead sponsor

Kastamonu University

Other

Collaborators

  • Bartın Unıversity
  • Duzce University
  • Harran University
  • Mustafa Kemal University
  • Selcuk University

Registry information

Official study title

Çocuk Judocuların Antrenör Yönlendirmesi ve Eğitim Müdahalelerinin Hidrasyon Durumlarına Etkisi

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
May 28, 2025
Registry last updated
May 28, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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