Table 1 Sleep behaviour of the entire group and for regular and irregular sleepers
From: Sleep Regularity and Predictors of Sleep Efficiency and Sleep Duration in Elite Team Sport Athletes
Variable | Entire group | Regular sleepers | Irregular sleepers | Regular vs. irregular sleepers | |
|---|---|---|---|---|---|
p value | Effect size (r) | ||||
Bedtime (h:min) | 22:59 (22:17 to 23:45) | 22:44 (22:23 to 23:41) | 22:55 (22:00 to 23:44) | 0.604 | − 0.06 (− 0.26 to 0.15); trivial |
Sleep onset (h:min) | 23:08 (22:28 to 23:55) | 22:54 (22:30 to 23:48) | 23:03 (22:07 to 23:52) | 0.701 | − 0.04 (− 0.26 to 0.19); trivial |
Sleep offset (h:min) | 07:23 (06:42 to 08:13) | 07:04 (06:47 to 08:30) | 07:28 (06:22 to 08:05) | 0.679 | − 0.05 (− 0.25 to 0.17); trivial |
Midpoint of sleep (h:min) | 03:15 (02:39 to 03:59) | 03:17(02:43 to 04:15) | 03:00 (02:21 to 03:51) | 0.805 | 0.03 (− 0.18 to 0.24); trivial |
Sleep regularity index (AU) | 85.1 (81.4 to 88.8) | 90.1 (89 to 91.3) | 76.5 (72.9 to 80) | < 0.001* | 0.86 (0.84 to 0.86); large |
Sleep onset variation (min.night−1) | 44 (14 to 75) | 27 (7 to 48) | 75 (19 to 131) | < 0.001* | − 0.73 (− 0.81 to − 0.61); large |
Sleep offset variation (min.night−1) | 39 (9 to 70) | 23 (6 to 40) | 62 (12 to 112) | < 0.001* | − 0.74 (− 0.83 to − 0.62); large |
Total sleep time (h:min) | 8:17 (7:30 to 9:04) | 8:18 (7:39 to 8:56) | 8:22 (7:19 to 9:24) | 0.506 | − 0.07 (− 0.27 to 0.14); trivial |
Total sleep time variation (min.night−1) | 54 (15 to 93) | 33 (8 to 58) | 77 (17 to 137) | < 0.001* | − 0.69 (− 0.78 to − 0.51); large |
Sleep efficiency (%) | 86.5 (81.9 to 91) | 87.7 (83.9 to 91.5) | 85 (80.1 to 89.9) | 0.006* | 0.31 (0.12 to 0.48); medium |
Sleep efficiency variation (%.night−1) | 3.3 (1.1 to 5.5) | 2.7(0.9 to 4.6) | 4.2 (1.5 to 7) | 0.001* | − 0.34 (− 0.52 to − 0.16); medium |
Sleep onset latency (min) | 5 (0 to 12.5) | 4 (0 to 10.5) | 4 (0 to 10.5) | 0.746 | 0.04 (− 0.16 to 0.25); trivial |