The Effect of Caffeine Reduction on Snoring and Quality of Life

Completed · Not applicable

Conditions studied: Snoring

In brief

Snoring is a problem for many people, often disturbing energy level, quality of sleep, and the relationship with a bed partner. Two observational studies that have indicated a relationship between the consumption of caffeine and snoring. The objective of this study will be to observe the degree of snoring and quality of sleep when caffeine intake is reduced over a period of four weeks. This will be a prospective, before-and-after study of a behavioral intervention. This study will engage thirty adults who report snoring, drink two cups of coffee or more per day (or an equivalent amount of caffeine), and have a consistent bed partner who can report on snoring severity. Both subject and partner will be asked to fill out a diary each day. The subjects will record the type of caffeine consumed, time at which each beverage was ingested, the total minutes of physical exercise, any caffeine withdrawal symptoms, quality of sleep, and energy in the morning. The partner (reporter) will rate his or her own sleep quality and energy in the morning, as well as the snoring level of the subject. Beginning the second week of the study, the subject will reduce caffeine intake to half the baseline consumption, and on the third week, will eliminate caffeine altogether. At the end of each week, the participants will be asked to mail their diaries in to the researchers and start a new series of entries. The study team will also call each week to answer any questions or concerns of the subject and reporter, and encourage continued reporting. When six weeks have elapsed following the completion of the last diary, the investigators will make a final call to the participants to record their current level of snoring, quality of sleep, and daily energy level.

Key facts

Study ID

NCT00641810

Run by

University of Vermont

People needed

30

Starts

2008-03-01

Expected to finish

2011-06-01

Last updated by the study team

2013-12-31

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• age at least 18 years
• consume 16 ounces of coffee or 25 ounces of caffeinated soda or tea
• consistent bed partner willing to serve as reporter
• reported as a loud snorer (6 or more on 10 point scale) most days of an average week

You may not qualify if…

• pregnant
• diagnosed by doctor with sleep apnea, facial or airways defect
• any facial or airways surgery that has changed snoring pattern.
• upper airways infection that requires antibiotics, cough suppressants, etc. in the last month
• use any continuous positive airway pressure (CPAP) device or dental appliance
• bed partner hearing impairment or defects.

Where it is running

• University of Vermont — Burlington, Vermont, United States

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