Table 2.
Daily measures of sleep, steps, cognitive function, subjective ratings, and interstitial glucose concentrations. Data are reported as mean ± SD.
|
Baseline day |
Experimental day 1 |
Experimental day 2 |
Experimental day 3 |
|||||
|---|---|---|---|---|---|---|---|---|
| Sitting | Active | Sitting | Active | Sitting | Active | Sitting | Active | |
| Variable | ||||||||
| Total sleep time (h) | 7.7 ± 1.0 | 7.7 ± 1.4 | 4.7 ± 0.1 | 4.7 ± 0.1 | 4.8 ± 0.1 | 4.8 ± 0.1 | 4.9 ± 0.1 | 4.8 ± 0.1 |
| Steps (count) | 1129 ± 747 | 1128 ± 318 | 1303 ± 564 | 6991 ± 1111 | 1342 ± 496 | 6985 ± 1083 | 1686 ± 796 | 6973 ± 1377 |
| Interstitial glucose | ||||||||
| AUC0700-2200 (mmol/L/900 min) | 946 ± 49 | 995 ± 115 | 1081 ± 87 | 1128 ± 202 | 1063 ± 76 | 1106 ± 144 | 1035 ± 64 | 1104 ± 146 |
| Daily mean (mmol/L) | 5.3 ± 0.3 | 5.5 ± 0.9 | 6.0 ± 0.5 | 6.3 ± 1.1 | 5.9 ± 0.4 | 6.1 ± 0.4 | 5.7 ± 0.4 | 6.0 ± 0.8 |
| Daily minimum (mmol/L) | 3.7 ± 0.6 | 4.0 ± 0.8 | 5.2 ± 4.7 | 5.0 ± 1.0 | 4.7 ± 0.4 | 4.6 ± 0.6 | 4.3 ± 0.8 | 4.5 ± 0.6 |
| Daily maximum (mmol/L) | 7.0 ± 0.2 | 7.4 ± 1.2 | 8.0 ± 0.6 | 8.4 ± 1.4 | 8.4 ± 1.0 | 8.2 ± 1.3 | 8.5 ± 0.8 | 8.3 ± 1.8 |
| Cognitive | ||||||||
| PVT - Mean reciprocal reaction time (1/RT) | 4.5 ± 0.2 | 4.5 ± 0.7 | 4.4 ± 0.2 | 4.2 ± 0.5 | 4.4 ± 0.2 | 4.2 ± 0.5 | 4.4 ± 0.3 | 4.2 ± 0.5 |
| PVT - Lapses (count) | 0.1 ± 0.3 | 0.7 ± 1.3 | 0.3 ± 0.7 | 1.1 ± 1.8 | 0.8 ± 1.7 | 0.8 ± 1.0 | 1.4 ± 3.4 | 1.5 ± 3.0 |
| DSST - Correct responses (count) | 65 ± 20 | 65 ± 20 | 65 ± 19 | 69 ± 5 | 66 ± 21 | 72 ± 4 | 67 ± 22 | 68 ± 24 |
| Subjective | ||||||||
| Sleepiness (1–9) | 3.6 ± 2.0 | 3.6 ± 1.8 | 4.1 ±1.5 | 3.9 ± 1.9 | 4.4 ± 1.5 | 4.0 ± 1.7 | 3.8 ± 0.9 | 2.8 ± 1.5 |
| Alertness (mm) | 69 ± 20 | 67 ± 14 | 63 ± 15 | 59 ± 15 | 59 ± 11 | 59 ± 10 | 60 ± 7 | 72 ± 18 |