NCT06079996

Brief Summary

The purpose of this study was to investigate the effects of caffeinated chewing gum on female softball pitching and hitting performance. 24 trained female softball players (10 pitchers and 14 fielders) were divided into a caffeine chewing gum trial (CAF) or a placebo trial (PLA) in a single-blind, randomized, crossover experimental design. Two pieces of gum containing 100 mg of caffeine (CAF) or without caffeine (PLA) were chewed for 10 minutes and then spit out, followed by a 15-minute warm-up. The physical tests included grip strength and countermovement jump. The softball-specific tests included pitching (fast ball speed) or hitting (exit speed). The two trials were separated by seven days.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
24

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started May 2022

Shorter than P25 for not_applicable

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

May 20, 2022

Completed
7 months until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 20, 2022

Completed
Same day until next milestone

Study Completion

Last participant's last visit for all outcomes

December 20, 2022

Completed
10 months until next milestone

First Submitted

Initial submission to the registry

October 6, 2023

Completed
6 days until next milestone

First Posted

Study publicly available on registry

October 12, 2023

Completed
Last Updated

October 12, 2023

Status Verified

October 1, 2023

Enrollment Period

7 months

First QC Date

October 6, 2023

Last Update Submit

October 6, 2023

Conditions

Caffeine

Outcome Measures

Primary Outcomes (2)

  • pitching performance

    Throw 10 fastballs

    15 min after intervention

  • batting performance

    Hit 15 balls

    15 min after intervention

Study Arms (2)

caffeine gum

EXPERIMENTAL

The gum containing 200 mg of caffeine (CAF) were chewed for 10 minutes before test

Other: CAFFEINE GUM

placebo

PLACEBO COMPARATOR

The gum without caffeine (PLA) were chewed for 10 minutes before test

Other: CAFFEINE GUM

Interventions

CAFFEINE GUMOTHER

Observing the effect of chewing gum on the performance of female softball players.

caffeine gumplacebo

Eligibility Criteria

Age20 Years - 30 Years
Sexfemale(Gender-based eligibility)
Gender Eligibility DetailsOnly professional female softball players
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • \. adult female; 2. at least six years of professional softball training and familiarity with all softball skills; 3. caffeine intake of less than 80 mg daily.

You may not qualify if:

  • \. not professionally trained; 2. having a medical condition for which exercise is not recommended, such as hypertension, hyperlipidemia, or heart disease; 3. having any musculoskeletal injuries within the last six months or not being able to complete a full trial; 4. having a history of caffeine allergy.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (1)

National Taiwan University of Sport

Taichung, 404, Taiwan

Location

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
INVESTIGATOR
Purpose
TREATMENT
Intervention Model
CROSSOVER
Sponsor Type
OTHER
Responsible Party
SPONSOR INVESTIGATOR
PI Title
Professor

Study Record Dates

First Submitted

October 6, 2023

First Posted

October 12, 2023

Study Start

May 20, 2022

Primary Completion

December 20, 2022

Study Completion

December 20, 2022

Last Updated

October 12, 2023

Record last verified: 2023-10

Data Sharing

IPD Sharing
Will not share

Locations

TW(1)