{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,1]],"date-time":"2026-05-01T05:55:54Z","timestamp":1777614954680,"version":"3.51.4"},"reference-count":28,"publisher":"Walter de Gruyter GmbH","issue":"1","license":[{"start":{"date-parts":[[2019,1,1]],"date-time":"2019-01-01T00:00:00Z","timestamp":1546300800000},"content-version":"unspecified","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/3.0"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2019,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The objective of this study was to determine the potential value of electrical impedance myography (EIM) for assessing lumbosacral paraspinal muscle (LPM) condition in lower back pain (LBP) patients. Standard methods for assessing the condition of LPMs, such as magnetic resonance imaging, are inconvenient and expensive. One tool that could be useful for this purpose is electrical impedance myography (EIM) a technique that can be performed rapidly at the bedside. After undergoing a screening history and examination, subjects were studied with the mView EIM device (Myolex, Inc, Boston). Bilateral LPMs were measured three times each and the two closest sets of measurements averaged on each side. Data analysis included non-parametric two-group comparisons between healthy subjects and back pain patients, receiver-operating curve analyses, and correlation analyses to age and body mass index. A total of 86 healthy individuals (median age (interquartile range) (IQR), 45.5 years (30.3\u201356.0 years), 42 men, 44 women) and 47 LBP (median age 51.0 year (39.5\u201357.5) years, 21 men, 26 women) were enrolled. Median EIM 100kHz phase was lower in the LBP patients (9.3\u00b0(IQR 8.4\u00b0\u201310.6\u00b0) versus 11.4\u00b0(IQR 9.4\u00b0\u201313.0\u00b0), p = 0.0007). Significantly increased normalized side-to-side differences were present for all three EIM variables (e.g., median 100 kHz phase 0.15 (IQR 0.07\u20130.31 in LBP patients versus 0.09 (IQR 0.04\u20130.17) in healthy individuals). A significant correlation between 100 kHz EIM phase and reactance was found with age (R\n                    <jats:sub>spearman<\/jats:sub>\n                    =\u22120.46, P=0.0002 and R\n                    <jats:sub>spearman<\/jats:sub>\n                    =\u22120.440, P=0.0003) but not for resistance. This study provides early evidence supporting that EIM has the potential to serve as a useful tool for evaluating the condition of LPMs.\n                  <\/jats:p>","DOI":"10.2478\/joeb-2019-0015","type":"journal-article","created":{"date-parts":[[2020,1,10]],"date-time":"2020-01-10T04:03:00Z","timestamp":1578628980000},"page":"103-109","source":"Crossref","is-referenced-by-count":10,"title":["Electrical impedance myography for assessing paraspinal muscles of patients with low back pain"],"prefix":"10.2478","volume":"10","author":[{"given":"Yun","family":"Wang","sequence":"first","affiliation":[{"name":"Department of Neurology , Beijing Chaoyang Hospital, Capital Medical University Beijing , China ."},{"name":"Department of Neurology , Beth Israel Deaconess Medical Center, Harvard Medical School , Boston , USA ."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Laura","family":"Freedman","sequence":"additional","affiliation":[{"name":"Myolex, Inc , Brookline , USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Martin","family":"Buck","sequence":"additional","affiliation":[{"name":"Myolex, Inc , Brookline , USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jose","family":"Bohorquez","sequence":"additional","affiliation":[{"name":"Myolex, Inc , Brookline , USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Seward B.","family":"Rutkove","sequence":"additional","affiliation":[{"name":"Department of Neurology , Beth Israel Deaconess Medical Center, Harvard Medical School , Boston , USA ."}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John","family":"Keel","sequence":"additional","affiliation":[{"name":"Emory Orthopaedics\/Spine Center , Emory University , Atlanta , USA"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"374","published-online":{"date-parts":[[2019,12,31]]},"reference":[{"key":"2026042817312443851_j_joeb-2019-0015_ref_001_w2aab3b7d220b1b6b1ab2b2b1Aa","doi-asserted-by":"crossref","unstructured":"Chen KY, Shaparin N, Gritsenko K. 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