We found conflicting data regarding the validity of methods used to examine back muscle fatigue .
The Biering-Sorensen test  , performed in conjunction with surface electromyography spectral analysis , turned out to be the most widely used and comparatively , the most optimal modality currently available to assess objective back muscle fatigue in daily clinical practise , even though critical limitations are discussed .
Implication s for Rehabilitation Despite its limitations , the Biering-Sorensen test is currently the most used , convenient and easily available fatiguing test for lumbar muscles .
Pooled mean frequency and half-width of the spectrum are currently the most valid electromyographic parameters to assess fatigue in chronic non-specific low back pain .
PURPOSE This systematic literature review aim ed at examining the validity and applicability in everyday clinical rehabilitation practise of methods for the assessment of back muscle fatiguability in patients with chronic non-specific low back pain ( CNSLBP ) .
The Relationship Between Active and Neural Measures in Patients With Nonspecific Low Back Pain
Study Design . Cross-sectional study of 50 individuals with nonspecific low back pain ( LBP ) . Objective . To evaluate the relationship between active and neural measurements in individuals with nonspecific LBP . Summary of Background Data . The Panjabi model for spinal stability consists of 3 interacting subsystems . Specific musculoskeletal measurements can be identified within the active and neural systems . The relationships among measures within this model have not been identified . Methods . A total of 50 individuals with nonspecific LBP were evaluated for measures of the active and neural stability systems , and analyzed using a canonical correlation analysis , which is used to measure the relationship between 2 multidimensional variables . Results . There were 2 significant relationships identified . The first identified a relationship among fatigue , flexion relation , and the feedforward abdominal response ( r = 0.764 , P < 0.001 ) . The second relationship was between the Sorenson endurance test and feedforward abdominal response ( r = 0.697 , P = 0.006 ) . Conclusion . Identification of relationships between back pain measurements may allow discrimination between individuals with different histology and pain levels . This process may assist the specificity of treatment programs prescribed for patients with back pain
We found conflicting data regarding the validity of methods used to examine back muscle fatigue .
The Biering-Sorensen test  , performed in conjunction with surface electromyography spectral analysis , turned out to be the most widely used and comparatively , the most optimal modality currently available to assess objective back muscle fatigue in daily clinical practise , even though critical limitations are discussed .
Implication s for Rehabilitation Despite its limitations , the Biering-Sorensen test is currently the most used , convenient and easily available fatiguing test for lumbar muscles .
Pooled mean frequency and half-width of the spectrum are currently the most valid electromyographic parameters to assess fatigue in chronic non-specific low back pain .
PURPOSE This systematic literature review aim ed at examining the validity and applicability in everyday clinical rehabilitation practise of methods for the assessment of back muscle fatiguability in patients with chronic non-specific low back pain ( CNSLBP ) .