Effects of Caffeine and Shot Put Performance

April 27, 2026 updated by: Chih-Hui Chiu, National Taiwan Sport University

Effects of Caffeinated Chewing Gum on Shot Put Performance

The aim of the study being to investigate the effects of caffeinated chewing gum on shot put performance

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

15-20 active throwers who have received professional shot put training are expected to be recruited for the study. In a randomisation crossover design, the study was divided into caffeinated chewing gum trial (CCG) and placebo trail (PL). Participants wore a heart rate monitor to record their heart rate and heart rate variability during the experiment, and were given either a caffeinated chewing gum containing 3 mg/kg of body weight (CAP trial) or a placebo chewing gum, and rested for 15 minutes. After the warm-up, the athletic ability test and shot put performance were conducted in order. Saliva samples were collected for analysis of caffeine and α-amylase before and at the end of the experiment.

Study Type

Interventional

Enrollment (Actual)

18

Phase

  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Taiwan
      • Taichung, Taiwan
        • National Taiwan University of Sport

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Adult

Accepts Healthy Volunteers

Yes

Description

Inclusion Criteria:

  • activity athlete
  • No cardiovascular and joint diseases

Exclusion Criteria:

  • Non-active athlete
  • Caffeine-sensitive individuals

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: caffeine gum
Chewing caffeine gum for 10 minutes
Dietary supplement: caffeine
The participants chewing either caffeine Gum (CAF trial, containing 3 mg/kg of caffeine) or Placebo Gum (PL) for 10 minutes.
Placebo Comparator: placebo gum
Chewing placebo gum for 10 minutes
Dietary supplement: caffeine
The participants chewing either caffeine Gum (CAF trial, containing 3 mg/kg of caffeine) or Placebo Gum (PL) for 10 minutes.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
shot put distance
Time Frame: 15 minutes after intervention
Measurement of Shot Put Distance (meter)
15 minutes after intervention

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

National Taiwan Sport University

Investigators

  • Principal Investigator: Chih-Hui Chiu, Sport Science Research Center

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

January 1, 2026

Primary Completion (Actual)

April 1, 2026

Study Completion (Actual)

April 26, 2026

Study Registration Dates

First Submitted

January 6, 2026

First Submitted That Met QC Criteria

February 9, 2026

First Posted (Actual)

February 17, 2026

Study Record Updates

Last Update Posted (Actual)

April 29, 2026

Last Update Submitted That Met QC Criteria

April 27, 2026

Last Verified

April 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 115-2

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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