Table 2.
Descriptive Statistics for Daily and Weekly Summary Estimates Reflecting Reported Time-in-bed Predicting Physical Activity and Sedentary Behavior the Next Day.a
| Sleep | Sunday to Monday |
Monday to Tuesday |
Tuesday to Wednesday |
Wednesday to Thursday |
Thursday to Friday |
Friday to Saturday |
Saturday to Sunday |
Weekly Summary |
|---|---|---|---|---|---|---|---|---|
| n=8,525 | n=7,240 | n=8,219 | n=8,534 | n=8,059 | n=7,877 | n=7,864 | n=10,086 | |
| Median (25th, 75th %ile) |
Median (25th, 75th %ile) |
Median (25th, 75th %ile) |
Median (25th, 75th %ile) |
Median (25th, 75th %ile) |
Median (25th, 75th %ile) |
Median (25th, 75th %ile) |
Median (25th, 75th %ile) |
|
| Reported time in bed (at night), hh:mm |
22:30 (21:54,23:15) |
22:30 (21:55,23:15) |
22:30 (21:53,23:15) |
22:30 (21:55,23:15) |
22:15 (21:55,23:15) |
22:35 (22:00,23:21) |
22:32 (22:00,23:24) |
22:34 (21.58,23:11) |
| Reported time out of bed (in the morning) hh:mm |
7:00 (6:12,7:45) |
7:00 (6:06, 7:45) |
7:00 (6:05,7:40) |
7:00 (6:10, 7:40) |
7:00 (6:10, 7:45) |
7:15 (6:30,8:00) |
7:10 (6:30,8:00) |
7:01 (6:24,7:42) |
| Total Time-in- bed, min·d−1 |
503 (455, 550) |
500 (454, 545) |
500 (452, 550) |
501 (455, 550) |
505 (455, 550) |
515 (470, 568) |
510 (465, 560) |
506 (469, 545) |
|
Physical
Activity (next day) |
Monday | Tuesday | Wednesday | Thursday | Friday | Saturday | Sunday |
Weekly
Summary |
| Accelerometer Wear Time, min·d−1 |
905 (845, 960) |
908 (847, 963) |
909 (848, 963) |
908 (848, 965) |
907 (846, 964) |
890 (826, 947) |
888 (824, 946) |
900 (850, 942) |
| Total Counts (per 10,000), ct·d−1 |
19.0 (12.6, 27.4) |
18.2 (12.2, 26.4) |
18.2 (12.4, 26.6) |
18.2 (12.2, 26.3) |
18.4 (12.4, 26.8) |
18.1 (12.0, 27.0) |
15.4 (10.3, 23.1) |
18.9 (13.4, 25.6) |
| Sedentary, min·d−1 |
587 (505, 663) |
594 (512, 671) |
593 (512, 672) |
593 (511, 673) |
591 (506, 671) |
577 (492, 654) |
606 (521, 685) |
590 (526, 651) |
| Light intensity, min·d−1 |
291 (228, 362) |
288 (225, 358) |
291 (227, 357) |
288 (223, 359) |
291 (227, 362) |
287 (222, 360) |
259 (198, 327) |
288 (237, 343) |
| Moderate intensity, min·d−1 |
7 (2, 24) |
6 (1, 22) |
6 (2, 22) |
6 (1, 22) |
6 (1, 22) |
6 (1, 21) |
4 (1, 16) |
9 (3, 22) |
| Vigorous intensity, min·d−1 |
0 (0, 0) |
0 (0, 0) |
0 (0, 0) |
0 (0, 0) |
0 (0, 0) |
0 (0, 0) |
0 (0, 0) |
0 (0, 0) |
| Accumulated MVPAb, min·d−1 |
7 (2, 25) |
6 (1, 22) |
6 (2, 22) |
6 (1, 22) |
6 (1, 22) |
6 (1, 21) |
4 (1, 16) |
9 (3, 22) |
ct·d−1 = counts per day; MVPA = Moderate to vigorous intensity physical activity; min·d−1 = minutes per day; %ile = percentile
a
Reported time-in-bed obtained via recorded times corresponding to time in bed at night and out of bed the next morning; sedentary behavior and physical activity data were assessed via accelerometers.
b
Accumulated MVPA were computed as every minute ≥1952 counts per minute threshold.