Results: Statistical analysis revealed greater normalized EMG signal amplitude in women with LBP compared to non-LBP women. There was significant difference in EMG activity of the IES (P=0.03) and CES (P=0.03) between two groups. However, no significant difference was found in EMG signals of the GM (P=0.11) and HAM (P=0.14) among two groups.
Conclusion: The findings of this study demonstrated altered activation pattern of the lumbo-pelvic muscles during PHE in the women with chronic LBP. This information is important for investigators using PHE as either an evaluation tool or a rehabilitation exercise.
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