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CAF & Firefighters Performance

Effects of Caffeinated Chewing Gum on Functional Firefighting Balance Ability After GABA Supplementation

Status
Completed
Phases
Unknown
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT07570030
Acronym
CAF & FFT
Enrollment
14
Registered
2026-05-06
Start date
2025-07-01
Completion date
2025-11-25
Last updated
2026-05-06

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Performance Enhancement

Keywords

firefighters

Brief summary

The aim of the study being to investigate chewing caffeine-containing gum could effectively improve firefighters' balance under conditions of brain fatigue.

Detailed description

14 healthy adult male active-duty firefighters as participants and used a crossover double-blind design, dividing them into a CAF trial and a PL trial. On the first day of the experiment, after the participants had taken sufficient time off and had a full night's sleep, they rested for 3 hours after dinner on the second day. Following the collection of saliva samples, baseline heart rate variability and firefighting ability tests were conducted. After the tests, the participants ingested 800 mg of GABA and rested for 30 minutes. After that, the participants chewed caffeinated gum containing 3 mg/kg (CAF trial) or caffeine-free placebo gum (PL trial) for 10 minutes, spit it out, rested for 15 minutes. The participants underwent eight firefighting balance tests, during which heart rate variability was measured. After the tests were completed, saliva samples were collected again.

Interventions

DIETARY_SUPPLEMENTCaffeine (300 mg)

The participants chewing either caffeine Gum (CAF trial, containing 3 mg/kg of caffeine) or Placebo Gum (PL) for 10 minutes.

OTHERPlacebo

The participants chewing either caffeine Gum (CAF trial, containing 3 mg/kg of caffeine) or Placebo Gum (PL) for 10 minutes.

Sponsors

Chih-Hui Chiu
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
TREATMENT
Masking
SINGLE (Investigator)

Eligibility

Sex/Gender
MALE
Age
20 Years to 40 Years
Healthy volunteers
Yes

Inclusion criteria

* Active-duty members of the Special Search and Rescue Brigade * Regularly perform firefighting and disaster relief duties * Have fully recovered from sports injuries such as strains or sprains for at least 3 months

Exclusion criteria

* Members who are not part of the Special Search and Rescue Brigade. * Individuals who do not regularly perform firefighting and disaster relief duties * Participants who have not fully recovered from sports injuries for at least 3 months

Design outcomes

Primary

MeasureTime frameDescription
firefighting balance test15 minutes after interventionMeasure the time it takes to return

Countries

Taiwan

Contacts

PRINCIPAL_INVESTIGATORChih Hui Chiu

National Taiwan University of Sport

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: May 7, 2026