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Completed

NCT Number: NCT06431035

Caffeine & Bodybuilding Dehydration Ability

15-20 trained bodybuilding athletes were divided into caffeine gum trial (CAF) and placebo trial (PL) with a randomized, double-blind study design. The participants chewing either caffeine Gum (CAF trial, containing 5 mg/kg of caffeine) or placebo gum (PL) for 10 minutes. After rested for 15 minutes, Participants used the bicycle to adjust the pedal resistance and speed according to their own feelings until they were dehydrated to 2% of their original body weight.

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Key information

Conditions

Caffeine Placebo

Age range

20 year–40 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

National Taiwan University of Sport

Taichung, 404, Taiwan

About this study

The purpose of this study was to investigate the effect of caffeinated chewing gum on dehydration ability in bodybuilding athletes. Methods: 15-20 trained bodybuilding athletes were divided into caffeine gum trial (CAF) and placebo trial (PL) with a randomized, double-blind study design. The participants chewing either caffeine Gum (CAF trial, containing 5 mg/kg of caffeine) or placebo gum (PL) for 10 minutes. After rested for 15 minutes, Participants used the bicycle to adjust the pedal resistance and speed according to their own feelings until they were dehydrated to 2% of their original body weight. Record time from exercise to completion of dehydration, heart rate, HRV, energy expenditure, fat oxidation rate and carbohydrate oxidation rate.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • having won the top 8 places in a national competition,
  • having no cardiovascular or joint diseases
  • being an adult male

Exclusion criteria

  • no top 8 finishes at national level
  • cardiovascular or joint disease, or any other condition that could be impaired by exercise
  • female and underage participants
  • previous caffeine allergy

Treatment and study plan

Caffeine

Dietary Supplement

The participants chewed either caffeine gum (5 mg/kg for 10 minutes per chew) or a placebo (10 minutes per chew, using regular gum).

Other names: plocabo gum

Primary outcomes

  1. dehydration speed

    Time frame: 15 minutes after intervention

    The participants start dehydration until dehydrated to 2% of their original body weight.

Secondary outcomes

  1. energy expenditure

    Time frame: 15 minutes after intervention

    The energy expenditure during dehydration

Sponsors and collaborators

Lead sponsor

Chih-Hui Chiu

Other

Registry information

Official study title

Effect of Caffeinated Chewing Gum on Dehydration Ability in Bodybuilding Athletes: a Crossover Trial

Important dates

Study start
2024
Primary completion
2024
Study completion
2024
First posted
May 28, 2024
Registry last updated
Jul 24, 2024

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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