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This study is to investigate the changes of back muscle electromyography (EMG) in occupational low back pain (LBP) patients pre-and post-rehabilitation.20 occupational LBP patients were asked to perform sepcially designed symmetrical and asymmetrical actions,which include“carrying”weights up and down with a 45° left rotation.Back muscle EMG signals were recorded from surface of paraspinal muscles.The tests performed in the weeks immediately before and after 12-week rehabilitation treatment.The profile and mean power frequency (MPF) of EMG were compared between pre-and post-rehabilitation.EMG profiles showed unchangeable,but the MPF showed significantly increase in post-rehabilitation comparing to pre-rehabilitation.That suggested that the muscle activity strategies could not be modified by rehabilitation,but the rehabilitation would increase the threshold of fatigue and reduce the possible muscle pain in back paraspinal muscles.
This study is to investigate the changes of back muscle electromyography (EMG) in occupational low back pain (LBP) patients pre-and post-rehabilitation. 20 occupational LBP patients were asked to perform secially designed symmetrical and asymmetrical actions, which include “carrying ”weights up and down with a 45 ° left rotation. Pack muscle EMG signals were recorded from surface of paraspinal muscles. The tests performed in weeks immediately before and after 12-week rehabilitation treatment. The profile and mean power frequency (MPF) of EMG were compared between pre-and post-rehabilitation. EMG profiles showed unchangeable, but the MPF showed significantly increased in post-rehabilitation comparing to pre-rehabilitation. That suggested that the muscle activity strategies could not be modified by rehabilitation, but the rehabilitation would increase the threshold of fatigue and reduce the possible muscle pain in back paraspinal muscles.