0141 Daily self-reported sleep duration patterns among male and female collegiate athletes

Abstract Introduction Student-athletes’ time demands include scholastic, athletic, and social events that may influence sleep duration; the association between duration, athletic performance, injury risk are inconclusive. Further, limited research investigates long-term habitual patterns in collegiate student-athletes. We aimed to describe feasibility of monitoring self-reported within-person duration patterns, test sex differences across a semester student-athlete cohort. Methods monitored daily prospective cohort study using ecologic momentary assessment. Each day, smartphone application prompted student-athletes record total hours obtained previous 24 hours(h). provide descriptive statistics for response frequency, sleep, percentage days below recommended (7-9) hours, coefficient variation (CV) [(standard deviation/mean)*100]. tested chi-squared tests, median on weekdays verses weekends with paired t tests (p<.05). Results Sixty-three (male: 57.1%) eight teams responded. Out possible 54 responses, frequency was <25% 27.0% student-athletes, 25-50% 19.1% 50-75% 20.6% ≥75% 33.3% Among those responding ≥50% (n=34), ranged 6.5-9h per 24h percent from 0-53.6%. The CV 6.2-31.8% overall, 7.0-24.1% among athletes rate ≥50%. There significant quartile (χ23=15.91, p<.001); highest males (41.7%) had rate, whereas 55.6% females rate. no reported above or (χ22=2.25, p=0.32). difference weekday weekend (t51=0.75, p=0.46). Conclusion Student-athletes generally obtaining sleep; however, participation variable as one-third responded more often than males. This suggests future studies should validate reliability self-report objective data this population obtain complete appropriately assess associations risk, recovery outcomes. Support (If Any) Pilot funding through Penn Injury Science Center (CDC R49 CE 003083) supported study.