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Using a Sleep Log to Quantify Sleep Time, Quality and Caffeine Use 

Luke Pavlat, BA'22 and David Pavlat, EdD

Human Performance Lab, Department of Kinesiology, Central College


Introduction: Over the past two years the NCAA has mandated that sleep be a variable talked about more by coaches and personnel. A constant battle for student-athletes is to balance the intake of caffeine to remain alert versus getting enough sleep. Therefore, the purpose of this research is to gain information from students about caffeine use using a paper sleep log.

Methods: Twenty-six students at a midwestern division III college were asked to take part in the study. After completing an IRB approved informed consent students kept a paper sleep log for two weeks. Questions included time to bed, time to awake, total sleep time and caffeine use. The total nights reported were 377. Data was placed in a Microsoft Excel file and statistics were completed using Minitab 20 Statistical Software. 


Variable Time or Yes/NoSD or %
Sleep Time8.27 hours1.42 hours
Caffeine after 6 pm18/3774.77%

Discussion: Of the 26 subjects and 377 nights reported only 18 times did someone ingest caffeine after 6 pm. We feel that the 4.77% use of caffeine after 6 pm is low. The coaches, athletic training and strength and conditioning staffs are trying to inform the student athletes that caffeine use should be limited to early in the day. It appears to be working.

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