Investigating the Effect of Caffeine Consumption on Speech Understanding in Noise in Young Adults

Istanbul Aydın University

Status: Enrolling

Conditions: Hearing

Treatments: Other: Placebo; Other: Experimental

Study type: Interventional

Funder types: Other

Identifiers

NCT06942117

41/2025

1919B012442147 (Other Grant/Funding Number)

Details and patient eligibility

About

Caffeine is a widely consumed substance worldwide and is often used to increase alertness and improve cognitive functions. Caffeine stimulates brain activity by binding to adenosine receptors, which increases alertness instead of sleepiness. Studies on the effects of caffeine on cognitive functions have shown that it improves basic cognitive functions such as attention, reaction time, and alertness, while a less pronounced effect is seen on sensory functions such as vision and hearing. However, no study has been found investigating the effect of caffeine consumption on understanding speech in noise. Understanding speech in noise is a skill that includes not only auditory functions but also cognitive functions. This skill is affected by cognitive elements such as selective attention and executive functions. In this context, it is thought that this study, which aims to examine the relationship between caffeine and understanding speech in noise, will contribute to the literature. 60 participants between the ages of 18-30 will be included in this study. Participants will consist of individuals without hearing loss (SSO<25 dB nHL), no history of neurological or psychological disorders, non-smokers, and those who do not use ototoxic drugs. Participants will be randomly divided into a placebo group that consumes decaffeinated coffee and a study group that consumes coffee containing 300 mg caffeine. The Turkish Matrix Test will be administered 30 minutes after coffee consumption. In addition, participants will be asked to keep a caffeine diary for one week to determine their daily caffeine consumption and will be asked to fill out the Caffeine Use Disorder Scale. Thus, they will be divided into low and high caffeine consumption groups and their speech understanding skills in noise will be compared.

Enrollment: 60 estimated patients

Sex: All

Ages: 18 to 30 years old

Volunteers: Accepts Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria:

• For both groups, it was planned to include individuals who had no hearing loss (SSO<25 dB nHL), no history of neurological or psychological disorders, were non-smokers, and did not use ototoxic drugs.

Exclusion Criteria:

Trial design

Primary purpose: Other

Allocation: Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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60 participants in 2 patient groups, including a placebo group

Experimental

Experimental group

Description:

Approximately 280 grams of caffeine containing coffee is given.

Treatment:

Other: Experimental

Placebo

Placebo Comparator group

Description:

Decaffeinated coffee will be provided.

Treatment:

Other: Placebo