Table 3. Comparisons between the Control and Symptomatic groups in time spent in each posture, expressed as a percentage of the total time in bed (percentage time) or in minutes (total time) and posture mobility.
| Variable | Control (n = 20) | Cervical (n = 13) | Lumbar (n = 20) |
|---|---|---|---|
| Percentage Time | |||
| Supine a | 39.2 (17.3) | 32.8 (17.3) F | 34.5 (16.8) F |
| Supportive side lying a | 43.0 (17.7) | 31.2 (15.1) F | 38.8 (16.1) F |
| Provocative side lying b | 16.0 (2.2, 22.4) | 29.6 (12.7, 48.8) *, U | 23.0 (6.6, 33.6) U |
| Prone b | 1.9 (0.0, 4.0) | 6.4 (0.0, 12.1) U | 3.9 (0.0, 5.3) U |
| Supportive Combined b | 82.2 (74.6, 96.0) | 64.0 (49.3, 75.5) *, U | 73.1 (63.6, 92.0) U |
| Provocative Combined b | 17.8 (4.0, 25.4) | 36.0 (24.5, 50.6) *, U | 26.9 (8.0, 36.3) U |
| Total Time (minutes) | |||
| Supine a | 178.6 (75.9) | 170.8 (85.1) F | 164.0 (70.9) F |
| Supportive side lying a | 200.8 (91.6) | 158.1 (83.1) F | 193.2 (88.8) F |
| Provocative side lying b | 75.0 (10.2, 97.5) | 153.0 (63.7, 242.5) *, U | 115.3 (34.6, 186.8) U |
| Prone b | 8.8 (0.0, 17.0) | 32.1 (0.0, 59.5) U | 19.2 (0.0, 24.8) U |
| Supportive Combined b | 379.5 (326.2, 453.9) | 328.9 (254.2, 396.2) U | 357.2 (301.1, 447.6) U |
| Provocative Combined b | 83.8 (16.4, 105.2) | 185.1(118.0, 251.8) *, U | 134.6 (40.8, 199.0) U |
| Posture Immobility (number) | |||
| Posture changes a | 18.3 (6.5) | 23.6 (6.6) *, F | 22.9 (9.1) F |
| Standard LPPI b | 5.0 (3.6, 6.4) | 6.0 (5.5, 6.5) U | 6.0 (1.5) F |
| Actual LPPI a | 7.8 (2.4) | 8.3 (1.3) F | 8.5 (6.0, 9.9) U |
| Supportive LPPI a | 6.6 (2.7) | 5.5 (1.9) F | 6.0 (4.1, 8.1) U |
| Provocative LPPI b | 0.5 (0.0, 1.5) | 2.0 (1.5, 4.0) *, U | 1.5 (1.5, 3.4) U |
| Sleep | |||
| Quality of sleep a (NRS) | 6.5 (2.1) | 4.8 (1.7) *, F | 4.6 (2.2) *, F |
| Insomnia Sleep Index b | 3.0 (1.0, 4.0) | 6.0 (4.5, 9.5) *, U | 10.0 (5.2, 11.8) **, U |
| PSQI a | 3.2 (1.6) | 7.4 (4.1) *, F | 6.7 (3.1) **, F |
Notes
F = ANOVA
U = Mann-Whitney
* p < .05 compared with Control; LPPI = Long periods of postural immobility; Standard LPPI = the number of times one posture is maintained for ≥.30 minutes; Actual LPPI = the number of 30 minute periods postures are maintained; PSQI = Pittsburgh Sleep Quality Index.
Data are
a Mean (Standard Deviation) or
b Median (Interquartile Range).