Comparison of Whole-Body Electromyostimulation versus Recognized Back-Strengthening Exercise Training on Chronic Nonspecific Low Back Pain: A Randomized Controlled Study

Table 4

Results of the primary and secondary endpoint after 12 weeks of intervention.

	CT MV ± SD ()	WB-EMS MV ± SD ()	Absolute difference MV (95% CI)
Average pain intensity (4 weeks) (Index)^a
Baseline	2.81 ± 1.34	2.69 ± 1.52	—	0.689
Difference	−0.85 ± 0.97	−0.60 ± 0.96	0.25 (−0.10 to 0.60)	0.160
Maximum isometric trunk extension (kg)
Baseline	38.90 ± 15.54	46.20 ± 19.13	—	0.062
Difference	8.96 ± 8.78	7.19 ± 8.82	1.77 (−1.58 to 5.12)	0.297
Maximum isometric trunk flexion (kg)
Baseline	36.61 ± 17.05	41.47 ± 15.98	—	0.126
Difference	6.61 ± 9.09	7.30 ± 9.05	0.69 (−4.26 to 2.88)	0.707

^aIndex from 0 (no pain) to 10 (worst possible pain)..