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. 2018 Apr 25;8:6539. doi: 10.1038/s41598-018-24550-5

Table 2.

Between-group analyses of EMG activity in deep multifidus muscle.

cLBP healthy control t-value P-value
AEMG 426.94 ± 146.41 771.44 ± 149.04 8.24 <0.001
RMS 267.79 ± 88.10 339.34 ± 71.72 3.16 0.003
MF 187.71 ± 29.67 169.13 ± 26.30 −2.27 0.024
MPF 200.00 ± 26.20 184.63 ± 22.51 −2.16 0.032
MFs 0.06 ± 0.06 0.17 ± 0.13 3.55 0.001
MPFs 0.05 ± 0.05 0.14 ± 0.10 3.58 0.001

cLBP, chronic low back pain; AEMG, average EMG; RMS, root mean square; MF, median frequency; MPF, mean power frequency; MFs, median frequency slope; MPFs, mean power frequency slope.