From: Effect of trunk exercise upon lumbar IVD height and vertebral compliance when performed supine with 1 g at the CoM compared to upright in 1 g
IVD level (cm)
PRE UPRIGHT
POST UPRIGHT
Hedge’s g
Paired t-test
L2–L3
0.65 ± 0.01
0.58 ± 0.02
1.39
p = 0.058
L3–L4
0.75 ± 0.01
0.75 ± 0.03
0.08
p = 0.804
L4–L5
0.89 ± 0.02
0.03
p = 0.928
L5–S1
1.18 ± 0.02
1.14 ± 0.02
0.49
p = 0.223