Table 1.
Baseline characteristics of participants.
Group characteristics | ||||
---|---|---|---|---|
NS (n = 6) | SR (n = 7) | SR+EX (n = 7) | P Value | |
Age (y) | 24.2 ± 3.9 | 25.1 ± 4.8 | 24.3 ± 3.5 | P = 0.895 |
Height (m) | 1.78 ± 0.09 | 1.79 ± 0.06 | 1.82 ± 0.05 | P = 0.638 |
BMI (kg/m2) | 24.3 ± 3.1 | 22.6 ± 2.4 | 25.2 ± 2.2 | P = 0.179 |
(mL.kg-1.min-1) | 44.9 ± 10.9 | 48.4 ± 6.3 | 48.7 ± 4.9 | P = 0.651 |
(mL.min-1) | 3422 ± 597.5 | 3681 ± 17.3 | 4037 ± 377.2 | P = 0.076 |
Fasting plasma glucose
(mmol.L-1) |
4.9 ± 0.3 | 5.1 ± 0.3 | 5.2 ± 0.2 | P = 0.423 |
Day 3 - Glucose AUC (A.U) | 653 ± 185 | 659 ± 80 | 632 ± 50 | P = 0.889 |
Day 8 - Glucose AUC (A.U) | 594 ± 129 | 835 ± 54* | 696 ± 72# | P < 0.001 |
Day 3 – HOMA-IR | 1.5 ± 0.3 | 1.9 ± 0.5 | 1.4 ± 0.7 | P = 0.164 |
Day 8 – HOMA-IR | 1.7 ± 0.5 | 1.9 ± 0.8 | 1.4 ± 0.6 | P = 0.414 |
Habitual sleep duration
(h:min/night) |
7:38 ± 0:50 | 7:15 ± 0:41 | 7:12 ± 0:41 | P = 0.884 |
MEQ score | 46 ± 7 | 46 ± 8 | 59 ± 7 | P = 0.095 |
Daily step count (Habitual) | 12827 ± 4653 | 11569 ± 1854 | 11831 ± 919 | P = 0.822 |
Daily step count (Study) | 11043 ± 2553 | 10139 ± 2035 | 11344 ± 2357 | P = 0.702 |
Values are mean ± sd. There were no significant differences between the three groups for any of the baseline characteristics. Data pertaining to VO2peak, glucose AUC, HOMA-IR, and step counts have been reported previously and have been reanalysed for this study. NS – Normal sleep, SR – Sleep restriction, SR+EX – Sleep Restriction and Exercise, BMI – body mass index, AUC – area under the curve, HOMA-IR – Homeostatic model assessment of insulin resistance index, MEQ – morningness-eveningness chronotype question. * denotes significantly different from NS group, # denotes significantly different from SR group, P < 0.05.