Table 2. Serum testosterone and LH concentrations according to duration of sleep recovery after 3 days of sleep deprivation.
| Testosterone (ng ml−1) | LH (ng ml−1) | |||
|---|---|---|---|---|
| Younger group | Elder group | Younger group | Elder group | |
| PSD 3 days | 5.10±2.05 | 2.29±0.98 | 3.64±2.02 | 2.15±1.39 |
| SR 1 day | 3.90±2.07 | 1.28±0.66 | 3.46±1.97 | 2.37±1.18 |
| SR 3 days | 6.83±1.53 | 1.97±0.44 | 9.28±0.98a | 4.11±3.19 |
| SR 5 days | 8.36±1.64a | 0.71±0.17 | 9.85±1.45a | 4.35±1.10 |
Abbreviations: LH, luteinizing hormone; PSD, paradoxical sleep deprivation; SR, sleep recovery.
a
P<0.05 compared with the control of the corresponding group.