NCT06704711

Brief Summary

The goal of this clinical trial is to investigate the effects of the mouth rinse form of caffeine (400 mg) on salivary lactoferrin, α-amylase and secretory immunoglobulin-a levels after incremental exercise in young amateur football players. The main questions it aims to answer are:

  • Caffeine in mouth rinse form increases salivary immunoglobulin a after incremental exercise
  • Caffeine in mouth rinse form increases salivary lactoferrin after incremental exercise
  • Caffeine in mouth rinse form increases salivary a-amylase after incremental exercise. This 3-session study will use a double-blind, randomized, placebo-controlled crossover experimental design. participants will complete three different treatments \[caffeine (CAF), control (C) and placebo (PLA)\] separated by at least 1 week. Baseline saliva samples will be collected while sitting in a chair and then:
  • CAF Group: They will rinse a solution containing a total of 400 mg caffeine (20 mL, 2% concentration) in the mouth for 20 seconds and try to continue the exercise against increasing resistance until exhaustion.
  • Control Group: Only rinse a solution containing a total of 400 caffeine (20 mL, 2% concentration) in the mouth for 20 seconds and receive no exercise treatment.
  • Placebo Group: They will rinse 20 mL of distilled water in the mouth for 20 s and try to continue the exercise against increasing resistance until exhaustion. Saliva samples will be collected at 6 different time points: 5 minutes before exercise (or caffeine mouth rinse) (T0-reference), immediately after caffeine mouth rinse (or immediately before exercise) (T1), 5 minutes/midway through exercise (T2), and immediately after exercise (T3), 60 minutes after the end of exercise (T4) and 120 minutes after the end of exercise (T5).All data will be statistically analyzed using SPSS 25.0 software (Chicago, IL, USA) and expressed as mean ± standard deviation. Shapiro-Wilk and Levene tests will be used to determine whether the data are normally distributed and whether the variance is homogeneous. Repeated measures ANOVA test will be used to compare group means. If there is a difference between the groups as a result of the analysis, post-hoc tests will be used to find out from which group this difference originates. In cases where the data are not normally distributed, nonparametric test methods will be used. The significance level of the tests will be accepted as p\<0.05

Trial Health

35
At Risk

Trial Health Score

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

Trial has exceeded expected completion date
Enrollment
30

participants targeted

Target at below P25 for not_applicable

Timeline
Completed

Started Nov 2024

Shorter than P25 for not_applicable

Status
not yet recruiting

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

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

November 15, 2024

Completed
6 days until next milestone

First Submitted

Initial submission to the registry

November 21, 2024

Completed
5 days until next milestone

First Posted

Study publicly available on registry

November 26, 2024

Completed
20 days until next milestone

Primary Completion

Last participant's last visit for primary outcome

December 16, 2024

Completed
14 days until next milestone

Study Completion

Last participant's last visit for all outcomes

December 30, 2024

Completed
Last Updated

November 26, 2024

Status Verified

November 1, 2024

Enrollment Period

1 month

First QC Date

November 21, 2024

Last Update Submit

November 21, 2024

Conditions

Keywords

SportomicsSalivary immunuglobulin-asalivary lactoferrinsalivary a-amylasecaffeine

Outcome Measures

Primary Outcomes (1)

  • Salivary antimicrobial proteins (Salivary a-amylase, lactoferrin and Ig-A)

    Salivary A-Amylase: Amylase functions as an antibacterial protein that inhibits bacterial growth and colonization in the oral cavity. Salivary Lactoferrin: Lactoferrin, one of the most abundant salivary antimicrobial proteins, exerts an antibacterial effect by retaining iron, an essential nutrient for bacterial growth, and also by directly interacting with and damaging bacterial membranes. Salivary Immunuglobulin-A: Salivary IgA (SIgA) contributes to mucosal immunity by preventing pathogens from adhering to the mucosal surface.

    From enrollment to the end of treatment at 4 weeks

Secondary Outcomes (1)

  • Rating of Perceived Exertion

    From enrollment to the end of treatment at 4 weeks

Study Arms (3)

Caffeine Mouth Rinse with incremental exercise

EXPERIMENTAL

They will rinse a solution containing a total of 400 mg caffeine (20 mL, 2% concentration) in the mouth for 20 seconds and try to continue the exercise against increasing resistance until exhaustion. The exercise test will be performed on a bicycle ergometer (Ergometer Exercise Bike SANA 500, Germany) (where the pedaling speed is kept constant at 60 rpm, with an initial load of 50 Watts and a load increase of 25 watts per minute, gradually increasing until the participants become exhausted. To be able to determine the degree of difficulty perceived during the test and The Borg Scale will be used to end the test when the athlete reaches the point of exhaustion.

Dietary Supplement: Caffeine 300 MGCombination Product: Exercise

Placebo Rinse with incremental exercise

PLACEBO COMPARATOR

They will rinse 20 mL of distilled water in the mouth for 20 s and try to continue the exercise against increasing resistance until exhaustion.The exercise test will be performed on a bicycle ergometer (Ergometer Exercise Bike SANA 500, Germany) (where the pedaling speed is kept constant at 60 rpm, with an initial load of 50 Watts and a load increase of 25 watts per minute, gradually increasing until the participants become exhausted. To be able to determine the degree of difficulty perceived during the test and The Borg Scale will be used to end the test when the athlete reaches the point of exhaustion.

Combination Product: ExerciseOther: Placebo

Control Group

EXPERIMENTAL

Only rinse a solution containing a total of 400 caffeine (20 mL, 2% concentration) in the mouth for 20 seconds and receive no exercise treatment.

Dietary Supplement: Caffeine 300 MG

Interventions

Caffeine 300 MGDIETARY_SUPPLEMENT

They will rinse the solution containing a total of 400 mg of caffeine (20 mL, 2% density) in the mouth for 20 seconds and try to continue the exercise against increasing resistance until exhaustion.

Caffeine Mouth Rinse with incremental exerciseControl Group
ExerciseCOMBINATION_PRODUCT

The exercise test will be performed on a bicycle ergometer (Ergometer Exercise Bike SANA 500, Germany) (where the pedaling speed is kept constant at 60 rpm, with an initial load of 50 Watts and a load increase of 25 watts per minute, gradually increasing until the participants become exhausted. To be able to determine the degree of difficulty perceived during the test and The Borg Scale will be used to end the test when the athlete reaches the point of exhaustion.

Caffeine Mouth Rinse with incremental exercisePlacebo Rinse with incremental exercise
PlaceboOTHER

They will rinse 20 mL of distilled water in their mouth for 20 seconds.

Placebo Rinse with incremental exercise

Eligibility Criteria

Age19 Years - 26 Years
Sexmale
Healthy VolunteersYes
Age GroupsAdult (18-64)

You may qualify if:

  • Healthy men who have not had any previous injuries, do not have a chronic disease, do not use medication, do not smoke, and have played or are playing football as an amateur.

You may not qualify if:

  • Those who have had any previous injury, have a chronic disease, use medication, or smoke.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

MeSH Terms

Interventions

CaffeineExercise

Intervention Hierarchy (Ancestors)

XanthinesAlkaloidsHeterocyclic CompoundsPurinonesPurinesHeterocyclic Compounds, 2-RingHeterocyclic Compounds, Fused-RingMotor ActivityMovementMusculoskeletal Physiological PhenomenaMusculoskeletal and Neural Physiological Phenomena

Central Study Contacts

CEMRE Cemre Didem EYPINAR

CONTACT

Study Design

Study Type
interventional
Phase
not applicable
Allocation
RANDOMIZED
Masking
SINGLE
Who Masked
PARTICIPANT
Purpose
TREATMENT
Intervention Model
CROSSOVER
Model Details: double-blind, randomized, placebo-controlled crossover trial design
Sponsor Type
OTHER
Responsible Party
PRINCIPAL INVESTIGATOR
PI Title
Cemre Didem EYIPINAR

Study Record Dates

First Submitted

November 21, 2024

First Posted

November 26, 2024

Study Start

November 15, 2024

Primary Completion

December 16, 2024

Study Completion

December 30, 2024

Last Updated

November 26, 2024

Record last verified: 2024-11

Data Sharing

IPD Sharing
Will share

I want to ensure that the study reaches all researchers with the link I will receive from here.

Shared Documents
STUDY PROTOCOL, SAP, ICF, CSR, ANALYTIC CODE