Caffeinated Gum Softball Performance

NCT ID: NCT06079996

Last Updated: 2023-10-12

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: NA
• Total Enrollment: 24 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2022-05-20
• Study Completion Date: 2022-12-20

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.

Detailed Description

This study utilized a randomized, crossover, single-blind experimental design. At least two familiarization tests were conducted one week before the formal trial to ensure each participant was familiar with the experimental procedures. Before the first formal trial, participants were randomly assigned to either the caffeinated chewing gum trial (CAF) with 200 mg of caffeine or the placebo trial (PLA) without caffeine, seven days apart (Figure 1). The primary outcome was the pitching and hitting performance, and the secondary outcomes were hand grip strength and height of countermovement jump.

Conditions

Caffeine

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: CROSSOVER
• Primary Study Purpose: TREATMENT
• Blinding Strategy: SINGLE

Study Groups

caffeine gum

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

Group Type: EXPERIMENTAL

CAFFEINE GUM

Intervention Type: OTHER

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

placebo

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

Group Type: PLACEBO_COMPARATOR

CAFFEINE GUM

Intervention Type: OTHER

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

Interventions

CAFFEINE GUM

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

Intervention Type: OTHER

Eligibility Criteria

Inclusion Criteria

• 1. 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.

Exclusion Criteria

• 1. 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.

• Minimum Eligible Age: 20 Years
• Maximum Eligible Age: 30 Years
• Eligible Sex: FEMALE
• Accepts Healthy Volunteers: Yes

Sponsors

Chih-Hui Chiu

OTHER

Sponsor Role: lead

Responsible Party

Chih-Hui Chiu

Professor

Responsibility Role: SPONSOR_INVESTIGATOR

Locations

National Taiwan University of Sport

Taichung, , Taiwan

Countries

Taiwan

Provided Documents

Document Type: Study Protocol

View Document

Other Identifiers

112-2

Identifier Type: -

Identifier Source: org_study_id