Sleep scores obtained by the activity monitor during the two intervention periods
| n | Efficiency | Total time in bed (min) | Total sleep time (min) | Wake after sleep onset (min) | Number of awakenings | Average awakening length (min) | |
| 5 sessions | 17 | 88.9±12.9 | 453±83 | 394±116 | 54±86 | 9±10 | 12±60 |
| 2 sessions | 17 | 89.9±12.0 | 458±81 | 413±100 | 38±49 | 8±9 | 3±4 |
Data are presented as mean±SD.
Sleep efficiency is defined as the total sleep time divided by the total time in bed.