Rehabilitation of Back Extensor Muscles' Inhibition in Patients with Long-Term Mechanical Low-Back Pain

Table 2

Repeated measures ANOVA and post hoc multiple comparisons of the clinical variables across the 3 timepoints of the study.

Outcome	Baseline; 𝑥±SD	4th week; 𝑥±SD	8th week; 𝑥±SD	𝐹 ratio	𝑃 value
MPG (𝑛=25)
SE	36.7±11.8^a	51.4±10.2^b	66.4±10.2^c	47.402	0.001
DE	11.2±2.63^a	14.6±2.52^b	20.0±2.92^c	62.126	0.001
SRPE	13.4±2.12^a	12.6±2.16^a	9.06±2.16^b	22.419	0.025
DRPE	14.1±2.55^a	13.7±2.11^a	10.7±2.11^b	16.767	0.001
MPSBEEG (𝑛=22)
SE	37.3±13.4^a	83.1±10.9^b	98.1±10.1^c	159.362	0.001
DE	11.3±2.10^a	24.2±10.0^b	29.4±8.93^c	13.981	0.001
SRPE	12.5±2.02^a	10.5±2.08^b	7.05±2.08^c	38.069	0.001
DRPE	14.2±2.16^a	12.7±1.91^b	9.68±1.91^c	29.448	0.001
MPDBEEG (𝑛=20)
SE	39.2±18.6^a	56.2±18.5^b	75.2±18.5^c	15.011	0.001
DE	11.3±4.27^a	22.0±8.45^b	27.9±8.27^c	26.890	0.001
SRPE	12.2±1.73^a	10.8±2.19^b	7.80±2.19^c	23.652	0.001
DRPE	13.4±1.05^a	9.35±1.35^b	6.35±1.35^c	158.731	0.001

Alpha level was set at 𝑃<0.05.
Superscripts (^{a, b, c}).
For a particular variable, mean values with different superscript are significantly (𝑃<0.05) different. Mean values with same superscripts are not significantly (𝑃>0.05) different. The pair of cell means that is significant has different superscripts.
Key:
𝑥: Mean.
SD: standard deviation.
VAS: Visual Analogue Scale.
SE: Static Endurance.
DE: Dynamic Endurance.
SRPE: rate of perceived exertion to Biering-Sørensen test of Static Muscular Endurance.
DRPE: rate of perceived exertion to Repetitive Arch-Up Test.