| Duration | Pre | Post | ||||
| Median | 25th, 75th percentile | Percentage | Median | 25th, 75th percentile | Percentage | |
| 1 min | 6.5 | 6.0, 9.0 | (N = 8; 73%) | 11.0 | 10.0, 12.0 | (N = 3; 27%) |
| 2 min | 8.5 | 7.5, 9.0 | (N = 16; 62%) | 12.0 | 10.0, 12.0 | (N = 10; 38%) |
| 3 min | 9.0 | 8.0, 10.0 | (N = 21; 58%) | 11.0 | 10.0, 11.0 | (N = 15; 42%) |
| 4 min | 9.5 | 9.0, 10.0 | (N = 8; 36%) | 11.0 | 11.0, 12.0 | (N = 14; 64%) |
| 5 min | 8.0 | 8.0, 9.0 | (N = 5; 45%) | 11.0 | 10.0, 12.0 | (N = 6; 55%) |
| 6 min | 10.0 | 10.0, 10.0 | (N = 1; 13%) | 11.0 | 10.0, 12.0 | (N = 7; 88%) |
| 7 min | 11.0 | 11.0, 11.0 | (N = 1; 25%) | 11.0 | 10.0, 11.0 | (N = 3; 75%) |
| 8 min | - |
|
| - |
|
|
| 9 min | - |
|
| 11.5 | 11.0, 12.0 | (N = 2; 100%) |