{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,29]],"date-time":"2026-04-29T12:28:17Z","timestamp":1777465697945,"version":"3.51.4"},"reference-count":42,"publisher":"SAGE Publications","issue":"1","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["BMR"],"published-print":{"date-parts":[[2021,1,13]]},"abstract":"<jats:p>BACKGROUND: Sorensen Test time-to-task-failure (TTF) predicts several low back pain (LBP) clinical outcomes, including recurrence. Because the test is described as a measure of trunk extensor (TE) muscle endurance, LBP rehabilitation programs often emphasize endurance training, but the direct role of TE muscle function on Sorensen Test-TTF remains unclear. OBJECTIVE: To assess the discriminative and associative properties of multiple markers of isolated TE performance with regard to Sorensen Test-TTF in individuals with recurrent LBP. METHOD: Secondary analysis of baseline measures from participants in a registered (NCT02308189) trial (10 men; 20 women) was performed. Participants were classified by Sorensen Test-TTF as high, moderate or low risk for subsequent LBP episodes, and compared to determine if classification could discriminate differences in TE function. Correlations between Sorensen Test-TTF and isolated TE performance, anthropometrics and disability were investigated. RESULTS: Individuals at risk of subsequent LBP episodes had greater perceived disability and fat mass\/TE strength ratios (P\u2a7d 0.05) than those not at risk. Modest, significant (r= 0.36\u20130.42, P\u2a7d 0.05) associations were found between Sorensen Test-TTF, TE endurance and fat mass\/TE strength. Exploratory analyses suggested possible sex-specific differences related to Sorensen Test-TTF. CONCLUSIONS: Isolated TE muscle endurance is only one of several factors with similar influence on Sorensen Test-TFF, thus LBP rehabilitation strategies should consider other factors, including TE strength, anthropometrics and perceived disability.<\/jats:p>","DOI":"10.3233\/bmr-200079","type":"journal-article","created":{"date-parts":[[2020,10,27]],"date-time":"2020-10-27T15:17:35Z","timestamp":1603811855000},"page":"139-147","source":"Crossref","is-referenced-by-count":4,"title":["Multiple measures of muscle function influence Sorensen Test performance in individuals with recurrent low back pain"],"prefix":"10.1177","volume":"34","author":[{"given":"David W.","family":"Russ","sequence":"first","affiliation":[{"name":"Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH, USA"},{"name":"Division of Physical Therapy, School of Rehabilitation and Communication Sciences, Ohio University, Athens, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Shinichi","family":"Amano","sequence":"additional","affiliation":[{"name":"Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Timothy D.","family":"Law","sequence":"additional","affiliation":[{"name":"Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH, USA"},{"name":"Department of Family Medicine, Ohio University, Athens, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"James S.","family":"Thomas","sequence":"additional","affiliation":[{"name":"Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH, USA"},{"name":"Division of Physical Therapy, School of Rehabilitation and Communication Sciences, Ohio University, Athens, OH, USA"},{"name":"Department of Biomedical Sciences, Ohio University, Athens, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brian C.","family":"Clark","sequence":"additional","affiliation":[{"name":"Ohio Musculoskeletal and Neurological Institute, Ohio University, Athens, OH, USA"},{"name":"Department of Biomedical Sciences, Ohio University, Athens, OH, USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"179","reference":[{"issue":"10053","key":"10.3233\/BMR-200079_ref1","doi-asserted-by":"crossref","first-page":"1603","DOI":"10.1016\/S0140-6736(16)31460-X","article-title":"Global, regional, and national disability-adjusted life-years (DALYs) for 315 diseases and injuries and healthy life expectancy (HALE), 1990-2015: a systematic analysis for the Global Burden of Disease Study 2015","volume":"388","author":"DALYs","year":"2016","journal-title":"Lancet."},{"issue":"10137","key":"10.3233\/BMR-200079_ref2","doi-asserted-by":"crossref","first-page":"2356","DOI":"10.1016\/S0140-6736(18)30480-X","article-title":"What low back pain is and why we need to pay attention","volume":"391","author":"Hartvigsen","year":"2018","journal-title":"Lancet."},{"issue":"10070","key":"10.3233\/BMR-200079_ref3","doi-asserted-by":"crossref","first-page":"736","DOI":"10.1016\/S0140-6736(16)30970-9","article-title":"Non-specific low back pain","volume":"389","author":"Maher","year":"2017","journal-title":"Lancet."},{"issue":"2","key":"10.3233\/BMR-200079_ref4","doi-asserted-by":"crossref","first-page":"239","DOI":"10.3233\/BMR-140509","article-title":"Discriminant analysis of neuromuscular variables in chronic low back pain","volume":"28","author":"Rossi","year":"2015","journal-title":"Journal of Back and Musculoskeletal Rehabilitation."},{"issue":"6","key":"10.3233\/BMR-200079_ref5","doi-asserted-by":"crossref","first-page":"323","DOI":"10.1016\/0268-0033(95)00002-3","article-title":"Static back endurance and the risk of low-back pain","volume":"10","author":"Alaranta","year":"1995","journal-title":"Clin Biomech (Bristol, Avon)."},{"issue":"4","key":"10.3233\/BMR-200079_ref6","doi-asserted-by":"crossref","first-page":"168","DOI":"10.1080\/16501970306124","article-title":"Course of back pain in primary care: a prospective study of physical measures","volume":"35","author":"Enthoven","year":"2003","journal-title":"J Rehabil Med."},{"issue":"2","key":"10.3233\/BMR-200079_ref7","doi-asserted-by":"crossref","first-page":"106","DOI":"10.1097\/00007632-198403000-00002","article-title":"Physical measurements as risk indicators for low-back trouble over a one-year period","volume":"9","author":"Biering-Sorensen","year":"1984","journal-title":"Spine (Phila Pa 1976)."},{"key":"10.3233\/BMR-200079_ref8","doi-asserted-by":"crossref","unstructured":"Conway R, Behennah J, Fisher J, Osborne N, Steele J. 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