Table 2.
Sleep characteristics for the night before and the night after forest walking
| n | Night before forest walking |
Night after forest walking |
Statistical test | Comment | ||
|---|---|---|---|---|---|---|
| Actual sleep time (min) | 42 | 365.9 ± 89.4 | 419.8 ± 128.7 | p = 0.02a | ||
| Actual sleep (%) | 42 | 86.9 ± 7.4 | 88.0 ± 6.9 | p = 0.4a | ||
| Sleep latency (min) | 42 | 20.1 ± 32.7 | 10.4 ± 9.7 | p = 0.07a | ||
| Immobile time (min | 42 | 356.3 ± 89.1 | 410.2 ± 127.7 | p = 0.02a | ||
| Sleep start time (median) | 42 | 23:48 | 23:46 | |||
| Sleep end time (median) | 42 | 6:58 | 7:18 | |||
| St. Mary's Hospital Sleep Questionnaire | ||||||
| Self-rated depth of sleep (score) | 64 | 4.7 ± 1.4 | 5.1 ± 1.5 | p = 0.03b | 1: Very light | 7: Deep |
| Number of awakenings (times) | 66 | 1.48 ± 1.24 | 1.45 ± 1.34 | p = 0.7b | 0: Not at all | 7: More than six times |
| Sleep quality (score) | 63 | 4.0 ± 1.1 | 4.3 ± 1.2 | p = 0.04b | 1: Very badly | 6: Very well |
| Alertness on waking (score) | 62 | 3.4 ± 1.2 | 3.6 ± 1.3 | p = 0.054b | 1: Very drowsy | 6: Very alert |
| Satisfaction with sleep (score) | 63 | 3.3 ± 1.0 | 3.4 ± 1.1 | p = 0.3b | 1: Very unsatisfied | 5: Completely satisfied |
| Early morning awakening (n, % yes) | 60 | 10, 16.7% | 8, 13.3% | p = 0.7c | 1: No | 2: Yes |
| Difficultly falling asleep (score) | 64 | 1.3 ± 0.5 | 1.2 ± 0.5 | p = 0.3b | 1: None or very little 4: Extreme difficulty | |
Mean ± SD, a: Paired-Student's t-test, b: Paired Wilcoxon signed-rank test, c: McNemar's test.