Evidence synthesis showed limited evidence supporting poor baseline transversus abdominis contraction thickness ratio as a treatment effect modifier favoring motor control exercise .
Limited evidence supported that high baseline transversus abdominis lateral slide was associated with higher pain intensity after various exercise interventions at 1-year follow-up .
However , there was limited evidence for the absence of relation between the contraction thickness ratio of transversus abdominis or anticipatory onset of lateral abdominal muscles at baseline and the short- or long-term LBP intensity after exercise interventions .
There was conflicting evidence for a relation between baseline percent thickness change of lumbar multifidus during contraction and the clinical outcomes of patients after various conservative treatments .
Although individual reports suggest that baseline morphometry or activity of transversus abdominis or lumbar multifidus predict clinical outcome of low back pain ( LBP ) , a related systematic review is unavailable .
Therefore , this review summarized evidence regarding the predictive value of these muscular characteristics .
Altered trunk muscle recruitment in people with low back pain with upper limb movement at different speeds.
OBJECTIVE To compare trunk muscle coordination in people with and without low back pain with varying speeds of limb movement . STUDY DESIGN Abdominal and back extensor muscle activity in association with upper limb movement was compared among three speeds of movement and between people with and without low back pain . PARTICIPANTS Fourteen subjects with a history of recurrent low back pain and a group of age- and sex-matched control subjects . MEASURES The onsets of electromyographic activity of the trunk and limb muscles , frequency of trunk muscle responses , and angular velocity of arm movements . RESULTS Early activation of transversus abdominis ( TrA ) and obliquus internus abdominis ( OI ) occurred in the majority of trials , with movement at both the fast and intermediate speeds for the control group . In contrast , subjects with low back pain failed to recruit TrA or OI in advance of limb movement with fast movement , and no activity of the abdominal muscles was recorded in the majority of intermediate speed trials . There was no difference between groups for slow movement . CONCLUSION The results indicate that the mechanism of preparatory spinal control is altered in people with lower back pain for movement at a variety of speeds
Evidence synthesis showed limited evidence supporting poor baseline transversus abdominis contraction thickness ratio as a treatment effect modifier favoring motor control exercise .
Limited evidence supported that high baseline transversus abdominis lateral slide was associated with higher pain intensity after various exercise interventions at 1-year follow-up .
However , there was limited evidence for the absence of relation between the contraction thickness ratio of transversus abdominis or anticipatory onset of lateral abdominal muscles at baseline and the short- or long-term LBP intensity after exercise interventions .
There was conflicting evidence for a relation between baseline percent thickness change of lumbar multifidus during contraction and the clinical outcomes of patients after various conservative treatments .
Although individual reports suggest that baseline morphometry or activity of transversus abdominis or lumbar multifidus predict clinical outcome of low back pain ( LBP ) , a related systematic review is unavailable .
Therefore , this review summarized evidence regarding the predictive value of these muscular characteristics .