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 .
A Controlled Examination of Medical and Psychosocial Factors Associated With Low Back Pain in Combination With Widespread Musculoskeletal Pain
Background : Little is known about chronic low back pain ( CLBP ) in combination with widespread musculoskeletal pain ( WMP ) . Objective : This study examined factors that may be common to these conditions , with the objective of detecting factors that could improve the course of these diseases . Design : This was a prospect i ve case control study . Patients and Intervention : A group of patients with CLBP and WMP ( CLBP+WMP group , n=97 ) was compared with a group of individuals who were pain-free and without a history of musculoskeletal problems ( control group , n=97 ) and with a group of patients with CLBP but without WMP ( CLBP-only group , n=52 ) . The mean age of the participants was 42.9 years ( SD=8.74 ) ; 76 % were women , and 24 % were men . Measurements : A total of 74 variables were measured , including sociodemographic , physical , and psychosocial variables . After univariate examination for group differences and analyses of variables available for all 3 groups , logistic regression on selected factors was performed . The α level was set at .05 , but was adjusted to avoid r and omly significant results . Results : For a number of variables , significant differences among the 3 groups were observed . For regression model 1 for the CLBP+WMP and control groups , 4 out of 9 variables showed significant likelihood tests : income ( lower in the WMP group ) , depression , anxiety , and fear-avoidance behavior . For regression model 2 , 2 out of 13 variables showed significant likelihood tests : endurance capacity ( more in the CLBP+WMP group ) and balance capability ( worse in the CLBP+WMP group ) . The models predicted at least 91.2 % of all cases to the correct group . The regression analysis regarding the CLBP+WMP and CLBP-only groups predicted 86.7 % of all cases to the correct group . Three out of 10 variables showed significant likelihood tests : high disability , fear-avoidance behavior , and number of treatments . Limitations : Some variables in testing the patients with WMP and the individuals who were pain-free were not used with the patients with CLBP only . Conclusions : Patients with CLBP and WMP should be examined for indicated physical and psychosocial factors . Therapeutic management should consider them in the early stage of the disease . These findings also might apply to patients with fibromyalgia or myofascial pain
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 .