The role of the paraspinal muscles in the development of adolescent idiopathic scoliosis based on surface electromyography and radiographic analysis

Table 2 Cobb angles in the three test postures (mean ± SD)

Groups	HSP-Cobb (°)	RPP-Cobb (°)	p	PEP-Cobb (°)	p
Total cohort (n = 27)	30.59 ± 11.69	20.15 ± 10.12	0.000*	21.36 ± 11.13	0.954
Group A (PEP-Cobb < RPP-Cobb) (n = 13)	25.68 ± 8.64	20.13 ± 8.76	0.001*	16.18 ± 6.26	0.007*
Group B (PEP-Cobb > RPP-Cobb) (n = 14)	35.14 ± 12.57	20.17 ± 11.57	0.000*	26.16 ± 12.64	0.000*

HSP-Cobb: Cobb angle in the habitual standing position; RPP-Cobb: Cobb angle in the relaxed prone position; PEP-Cobb: Cobb angle in the prone extension position; Group A (PEP-Cobb < RPP-Cobb): patients in whom the PEP-Cobb is smaller than or equal to the RPP-Cobb; Group B (PEP-Cobb > RPP-Cobb): patients in whom the PEP-Cobb is greater than the RPP-Cobb. *p < 0.05, compared with RPP-Cobb

ISSN: 1471-2474