Table 1.
Identification and quantification of knee-straining postures within measurement (M) and both questionnaires (Qt 0 and Qt 1)
| Postures | Identification of knee postures (percentage of agreement) | Duration of knee-straining activities (min) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Survey t 0 (n = 190) | Survey t 1 (n = 125) | |||||||||
| M − Qt 0 | M − Qt 1 | M | Qt 0 | M | Qt 1 | |||||
| (n = 190) | (n = 125) | Median (range) | Mean (SD) | Median (range) | Mean (SD) | Median (range) | Mean (SD) | Median (range) | Mean (SD) | |
| Unsupported kneeling | 90.0 | 87.2 | 15.3 (0.0–125.0) | 20.9 (20.3) | 20.0 (0.0–1,064.0) | 52.8 (116.6) | 17.2 (0.0–125.0) | 22.8 (21.7) | 20.0 (0.0–1,400.0) | 76.4 (194.2) |
| Supported kneeling | 85.8 | 81.6 | 2.9 (0.0–73.0) | 9.2 (14.3) | 11.0 (0.0–1,200.0) | 44.9 (115.1) | 2.6 (0.0–73.0) | 10.5 (15.9) | 25.0 (0.0–18,000.0) | 316.3 (1,795.2) |
| Sitting on heels | 71.6 | 76.8 | 1.4 (0.0–57.9) | 4.2 (6.8) | 1.5 (0.0–360.0) | 16.7 (46.0) | 1.8 (0.0–57.9) | 4.5 (7.6) | 11.0 (0.0–18,000.0) | 193.8 (1,607.5) |
| Squatting | 67.4 | 67.2 | 0.9 (0.0–83.4) | 5.0 (11.5) | 2.5 (0.0–300.0) | 17.3 (37.8) | 0.8 (0.0–78.6) | 4.5 (10.2) | 6.0 (0.0–2,000) | 54.4 (204.5) |
| Crawling | 73.2 | 57.6 | 0.0 (0.0–7.0) | 0.2 (0.9) | 0.0 (0.0–900.0) | 19.2 (90.5) | 0.0 (0.0–7.0) | 0.3 (1.0) | 2.0 (0.0–9,000.0) | 121.7 (822.9) |
| Knee postures in total | 100.0 | 95.2 | 32.7 (0.0–146.8) | 39.3 (32.3) | 60.0 (0.0–2,200.0) | 152.2 (279.4) | 33.9 (0.0–146.8) | 42.6 (34.5) | 105.0 (0.0–39,850) | 762.6 (3,977.0) |