Effect of Antibacterial Mouthwash on Muscle Function in Healthy Young Men and Women

Quadriceps Muscle Clinical Trial

Official title:

Effect of Antibacterial Mouthwash on Muscle Function in Healthy Young Men and Women

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT04095442
• Other study ID #: 1907204336
• Status: Completed
• Phase: N/A
• Start date: November 1, 2019
• Est. completion date: March 20, 2023

Study information

• Verified date: February 2024
• Source: Indiana University
• Contact: n/a
• Is FDA regulated: No
• Study type: Interventional

Clinical Trial Summary

The purpose of this study is to determine the effects of antibacterial mouthwash on muscle speed and power in healthy young men and women. We have previously demonstrated that drinking beetroot juice, a source of dietary nitrate and therefore nitric oxide, increases muscle function in this population. Antibacterial mouthwash has been shown to interfere with the conversion of dietary nitrate to nitric oxide. We therefore hypothesize that it will diminish nitric oxide bioavailability and inhibit muscle contractility.

Description:

Study Visit One:

During an initial visit, subjects will complete the informed consent process, be instructed on the requirements of the study, and practice the exercise protocol (see below).

Study Visit Two:

Subjects will be tested after they have avoided exercise, caffeine, alcohol, chewing gum, and foods high in nitrate (e.g., spinach, beets, collard greens) for at least 24 hours. They will also be asked to not use any mouthwash products during this period. They will then provide provide a saliva sample for subsequent measurement of nitrate and nitrite concentrations and have their breath nitric oxide levels measured using a portable analyzer. The maximal knee extensor speed and power of their knee extensor muscles will then be measured using an isokinetic dynamometer. This machine can control the speed of movement while measuring the maximal force (torque) that a subject can voluntarily produce.

Subjects will then be randomly assigned to receive either an antibacterial mouthwash (Cepacol©, Reckitt Benckiser, Parsippany, NJ) or, as a control solution, an alcohol-free "natural" mouthwash (Tom's of Maine©, Kennebunk, ME). Participants will be asked to rinse their mouth as directed on the product's packaging for 30 s twice per day for 7 (+/-2) days and to record the usage of the mouthwash on a provided form. Subjects will then return for Study Visit 3 (see below). This is considered a single-blind study, which means that the investigators will not know what type of mouthwash a subject is receives.

Study Visit Three:

At the end of the treatment period, subjects will be asked to return to undergo the same procedures as described for Study Visit Two.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 32
• Est. completion date: March 20, 2023
• Est. primary completion date: March 20, 2023
• Accepts healthy volunteers: Accepts Healthy Volunteers
• Gender: All
• Age group: 18 Years to 30 Years

Eligibility

Inclusion:

• Men and Women age 18-30 years old

• No current use of mouthwash

Exclusion:

• Men and Women <18 or 30> y of age

• Unable to provide informed consent

• Current users of mouthwash

• Current antibiotic use

• Current smokers

• Currently pregnant or lactating

• Stage II hypertension (resting blood pressure >140/>90)

An answer of yes to any of the seven questions on the first page of the Physical Activity Readiness Questionnaire (PAR-Q) indicating that the subject is not physically ready for exercise without a medical exam. These exclusions include the following:

• If participant's doctor has ever said that he/she has a heart condition and that he/she should only do physical activity recommended by a doctor

• Pain in chest when doing physical activity

• In past month, chest pain when not doing physical activity

• If participant has ever lost balance because of dizziness or has ever lost consciousness

• Bone or joint problem that could be made worse by change in physical activity

• Currently on prescribed drugs for blood pressure or heart condition.

• If the participant knows of any other reason why he/she should not do physical activity.

Related Conditions & MeSH terms

• Quadriceps Muscle

Intervention

Device:
• Cepacol
Twice-daily use of Cepacol per the manufacturer's guidelines
• Tom's Natural Mouthwash
Twice-daily use of Tom's Natural Mouthwash per the manufacturer's guidelines

Locations

Country	Name	City	State
United States	Indiana University School of Health and Human Sciences	Indianapolis	Indiana

Sponsors (1)

Lead Sponsor	Collaborator
Indiana University

Country where clinical trial is conducted

United States, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	Muscle Function	Maximal knee extensor speed determined using isokinetic dynamometry	1 day
Primary	Muscle Function	Maximal knee extensor speed determined using isokinetic dynamometry	7 day
Secondary	Salivary Nitrate	Salivary concentration of nitrate	1 day
Secondary	Salivary Nitrite	Salivary concentration of nitrite	7 day
Secondary	Breath Nitric Oxide	Breath nitric oxide level	1 day
Secondary	Breath Nitric Oxide	Breath nitric oxide level	7 day