From: Effect of a mattress on lumbar spine alignment in supine position in healthy subjects: an MRI study
CON | MAT | Difference | p value | ES | |
---|---|---|---|---|---|
Total (n = 20) | |||||
L1–L5 | 34.7 ± 7.1 | 37.6 ± 6.5 | +2.9 | < 0.001 | 0.34, small |
L1–S1 | 47.1 ± 6.7 | 47.9 ± 7.2 | +0.8 | 0.236 | NA |
L5–S1 | 12.4 ± 3.3 | 10.8 ± 3.1 | −1.6 | 0.008 | 0.50, small |
SS | 37.4 ± 5.2 | 39.4 ± 5.6 | +2.0 | < 0.001 | 0.37, small |
Females (n = 10) | |||||
L1–L5 | 35.5 ± 7.9 | 37.1 ± 7.5 | +1.6 | 0.082 | NA |
L1–S1 | 49.0 ± 6.5 | 48.5 ± 8.0 | −0.5 | 0.678 | NA |
L5–S1 | 13.5 ± 2.9 | 11.4 ± 3.3 | −2.1 | 0.052 | NA |
SS | 37.4 ± 5.9 | 39.5 ± 6.3 | +2.1 | 0.009 | 0.34, small |
Males (n = 10) | |||||
L1–L5 | 34.0 ± 6.4 | 37.0 ± 5.7 | +3.0 | < 0.001 | 0.50, small |
L1–S1 | 45.3 ± 6.7 | 47.3 ± 6.7 | +2.0 | 0.006 | 0.30, small |
L5–S1 | 11.3 ± 3.4 | 10.2 ± 2.9 | −1.1 | 0.067 | NA |
SS | 37.3 ± 4.8 | 39.3 ± 5.2 | +2.0 | 0.019 | 0.40, small |