Markers of poor sleep quality increase sedentary behavior in college students as derived from accelerometry
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METHODS • ORIGINAL ARTICLE
Markers of poor sleep quality increase sedentary behavior in college students as derived from accelerometry Trent A. Hargens 1
&
Matthew C. Scott 1 & Valerie Olijar 1 & Matthew Bigman 1 & Elizabeth S. Edwards 1
Received: 22 July 2020 / Revised: 7 September 2020 / Accepted: 12 September 2020 # Springer Nature Switzerland AG 2020
Abstract Purpose Sleep is essential for overall health and can impact academic performance. Prior research reports reduced sleep time in college students. Poor sleep may impact physical activity (PA) and sedentary behavior, or vice versa, but has not been examined extensively in this population. Therefore, the purpose of this study was to examine markers of sleep quality, PA, and sedentary behavior in college students using objective means. Methods A convenience sample of college students underwent body composition analysis and 7-day objective PA and sleep assessment via accelerometry. Results Among 81 college students (53 women), there was no association between total sleep time (TST) and weekly average PA. TST was negatively associated with sedentary minutes per day, sedentary bouts per day, and total time in sedentary bouts per day. Greater sedentary bouts per day and average sedentary minutes per day were seen in those with a TST < 6 h, with no difference in body composition. Further, TST was negatively associated with sedentary minutes accumulated on the subsequent day, for all 7 days. Conclusion In a primarily residential college student cohort, poor sleep is associated with sedentary behavior more than PA. These students, who require a high amount of transport PA to and from campus during the week, are compensating by sleeping more and moving less on the weekend. Keywords Sleep quality . Physical activity . Sedentary time . Accelerometer . College student
Introduction An estimated 50–70 million US adults suffer from chronic sleep and wakefulness disorders [1]. Poor sleep quality has been linked with numerous poor health outcomes including obesity, hypertension, type 2 diabetes mellitus, and cardiovascular disease (CVD) [2–5]. Additionally, poor sleep has been associated with poor academic performance in college students and medical students [6–10]. The National Sleep Foundation currently recommends that adults achieve 7–9 h of sleep per night [11]; however, young adults frequently fail to meet this recommendation [12]. More specifically, a recent study examining the sleep habits of 1125 college students aged 17 to 24 years reported that > 60% were categorized as * Trent A. Hargens [email protected] 1
Department of Kinesiology Human Performance Laboratory, James Madison University, Harrisonburg, VA 22807, USA
poor sleep quality and that sleep patterns were “erratic.” Authors described their findings as “alarming” [13]. In addition to decreased hours of sleep time, poor sleep quality has been defined through additional means such as low sleep efficiency (SE; ratio of sleep time to time in bed), increased sleep latency (SL; time from going to bed to fall
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