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Completed

NCT Number: NCT07412951

Effects of Caffeine and Shot Put Performance

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

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Key information

Conditions

Performance Enhancing Product Use

Age range

20 year–40 year

Sex eligibility

Male

Study type

Interventional

Phase

Not applicable

Primary location

National Taiwan University of Sport

Taichung, Taiwan

About this study

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.

Who can participate

Healthy volunteers accepted: Yes

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

Inclusion criteria

  • activity athlete
  • No cardiovascular and joint diseases

Exclusion criteria

  • Non-active athlete
  • Caffeine-sensitive individuals

Treatment and study plan

Caffeine

Dietary Supplement

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

Primary outcomes

  1. shot put distance

    Time frame: 15 minutes after intervention

    Measurement of Shot Put Distance (meter)

Sponsors and collaborators

Lead sponsor

National Taiwan Sport University

Other

Registry information

Official study title

Effects of Caffeinated Chewing Gum on Shot Put Performance

Important dates

Study start
2026
Primary completion
2026
Study completion
2026
First posted
Feb 17, 2026
Registry last updated
Apr 29, 2026

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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