Table 3.
Lumbo-pelvic rhythm (expressed as the percentage of lumbar contribution to trunk ROM) and consistency between tests
Movement | Back pain status | Average % Lumbar movement for each testa | Inter-rater agreement (same-day, different raters) | Intra-rater agreement (different-days, same rater) | |||||
---|---|---|---|---|---|---|---|---|---|
Test 1 | Test 2 | Test 3 | Average for all 3 Tests | Mean & standard deviation of differencesb between Test 1 vs Test 2 | Minimal detectable change (MDC90) | Mean & standard deviation of differencesb between Test 1 vs Test 3 | Minimal detectable change (MDC90) | ||
Flexionc | NoLBP | 51.9 % ± 9.6 % | 50.0 % ± 9.0 % | 52.0 % ± 9.6 % | 51.3 % ± 9.4 % | 1.9 % ± 5.5 % | 9.1 % | 0.8 % ± 7.0 % | 11.5 % |
LBP | 45.4 % ± 8.9 % | 45.6 % ± 8.6 % | 46.4 %10.7 % | 45.8 % ± 8.6 % | 0.2 % ± 5.9 % | 8.5 % | 0.5 % ± 9.4 % | 15.5 % | |
Extensionc | NoLBP | 68.4 % ± 34.0 % | 68.9 % ± 31.2 % | 66.6 % ± 33.2 % | 68.0 % ± 32.3 % | 0.5 % ± 22 % | 36.3 % | 2.6 % ± 34.2 % | 56.2 % |
LBP | 58.2 % ± 30.2 % | 56.2 % ± 30.6 % | 59.0 % ± 29.7 % | 56.9 % ± 33.7 % | 2.0 % ± 25.2 % | 41.4 % | 1.1 % ± 31.8 % | 52.3 % | |
Left lateral flexionc | NoLBP | 78.5 % ± 10.0 % | 78.7 % ± 9.0 % | 79.0 % ± 9.8 % | 78.6 % ± 9.5 % | 0.2 % ± 7.3 % | 12.0 % | 0.6 % ± 7.2 % | 11.8 % |
LBP | 81.6 % ± 8.2 % | 79.2 % ± 10.2 % | 81.1 % ± 10.4 % | 80.6 % ± 9.6 % | 2.4 % ± 7.3 % | 12.0 % | 1.6 % ± 7.2 % | 11.8 % | |
Right lateral flexionc | NoLBP | 77.4 % ± 9.5 % | 78.2 % ± 8.8 % | 79.3 % ± 8.3 % | 78.0 % ± 9.1 % | 0.7 % ± 6.8 % | 11.2 % | 2.3 % ± 6.3 % | 10.4 % |
LBP | 78.4 % ± 9.4 % | 76.6 % ± 9.4 % | 80.2 % ± 11.6 % | 78.3 % ± 10.0 % | 1.8 % ± 8.2 % | 13.5 % | 1.0 % ± 8.9 % | 14.6 % |