The effects of caffeine abstinence on sleep: A pilot study

AimThe aim of this study was to examine whether caffeine abstinence in the evening could improve the sleep quality of those who habitually consume coffee.DesignA double-blind control group design (caffeine and caffeine-free groups).SettingA university.SubjectsA convenience sampling of 10 students (mean age 21.4 years).MethodsIt was a 14-day experiment. For the first 7 days, all participants consumed caffeinated coffee. In the following 7 days, subjects consumed caffeinated or decaffeinated coffee according to their assigned group.MeasuresSleep–wake parameters, self-reported sleep quality and level of refreshment.ResultsThere were no significant differences (p > .05) among the data of the two groups identified. No significant changes (p > .05) were found in the sleep quality of either group during the study.ConclusionThis study confirms that caffeine abstinence in the evening might not be helpful in sleep promotion. It highlights the need to implement evidence-based practice in health promotion.