Table 3 Comparison of effects on forenoon and afternoon walking
|  |  | Forenoon session |  | Afternoon session |    Interactionc | ||
|---|---|---|---|---|---|---|---|
|  |    n |    Beforea |    Afterb |    n |    Beforea |    Afterb |  |
Actual sleep time (min) |    26 |    380.0 ± 99.6 |    385.6 ± 101.7 |    16 |    342.9 ± 66.2 |    475.4 ± 150.5 |    0.005 |
Actual sleep (%) |    26 |    88.8 ± 5.1 |    88.9 ± 5.5 |    16 |    83.9 ± 9.6 |    86.6 ± 8.7 |    0.28 |
Sleep latency (min) |    26 |    22.8 ± 40.2 |    11.1 ± 10.9 |    16 |    15.6 ± 14.3 |    9.4 ± 7.3 |    0.61 |
Immobile time (min) |    26 |    372.2 ± 95.7 |    377.5 ± 98.2 |    16 |    330.6 ± 72.8 |    463.4 ± 153.6 |    0.006 |
St. Mary's Hospital Sleep Questionnaire | Â | Â | Â | Â | Â | Â | Â |
   Self-rated depth of sleep (score) |    35 |    4.5 ± 1.4 |    4.9 ± 1.4 |    29 |    4.9 ± 1.3 |    5.2 ± 1.6 |    0.57 |
   Number of awakenings (times) |    37 |    1.46 ± 1.26 |    1.49 ± 1.22 |    29 |    1.52 ± 1.24 |    1.41 ± 1.50 |    0.63 |
   Sleep quality (score) |    34 |    3.9 ± 1.1 |    4.2 ± 1.2 |    29 |    4.1 ± 1.0 |    4.3 ± 1.2 |    0.87 |
   Alertness on waking (score) |    34 |    3.4 ± 1.2 |    3.6 ± 1.4 |    28 |    3.4 ± 1.2 |    3.8 ± 1.1 |    0.64 |
   Satisfaction with sleep (score) |    34 |    3.2 ± 1.0 |    3.2 ± 1.1 |    29 |    3.3 ± 1.1 |    3.6 ± 0.9 |    0.30 |
   Early morning awakening (n, % yes) |    34 |    5, 14.7% |    5, 14.7% |    26 |    5, 19.2% |    3, 11.5% |  |
   Difficultly falling asleep (score) |    35 |    1.2 ± 0.5 |    1.2 ± 0.5 |    29 |    1.3 ± 0.6 |    1.2 ± 0.5 |    0.23 |