caa a22 4500 469055367 CHVBK 20180323132842.0 cr unu---uuuuu 170328e19920501xx s 000 0 eng 10.1007/BF00626281 doi (NATIONALLICENCE)springer-10.1007/BF00626281 Electro and acoustic myography for noninvasive assessment of lumbar paraspinal muscle function [Elektronische Daten] [Darryl Lee, Maria Stokes, Robert Taylor, Robert Cooper] Summary: In 31 normal subjects (17 male), aged 19-48 years, and 8 patients with chronic low back pain (4 male), aged 37-55 years, the repeatability of surface recordings of acoustic myography (AMG) and electromyography (EMG) were examined in the lumbar paraspinal muscles. Five isometric test positions were examined. In 21 of the normal subjects, four positions tested were: quiet standing, half extension from prone lying, full extension from prone with and without resistance. In 10 of the normal subjects and the 8 back pain patients, a standardised, unsupported horizontal position with the upper body over the end of a couch was tested. The AMG and EMG signals were full-wave rectified and integrated (iAMG and iEMG). The variability of recordings during repeated 5-s isometric contractions was assessed by analysis of variance (ANOVA) and the coefficient of variation (CV) was calculated from the ANOVA. Both recording techniques produced the most repeatable results during the unsupported, horizontal hold position. In the normal subjects, CV were, iAMG 5.6%, iEMG 4.9%; and in the patients, iAMG 4.4%, iEMG 2.6%. The CV for the other four isometric test positions ranged from 15.3% to 29.4% for iAMG, and 8% to 15.7% for iEMG. These results demonstrated that a controlled test manoeuvre for examining AMG and EMG of the paraspinal muscles was vital for repeatable recordings. The CV for the standardised, horizontal position were lower than for previously published results. This position therefore would appear to be suitable for physiological studies of AMG and EMG activity of the paraspinal muscles in normal subjects and patients with chronic low back pain. Springer-Verlag, 1992 Back pain nationallicence Acoustic myography nationallicence Paraspinal muscles nationallicence Muscle activity nationallicence Lee Darryl Department of Physiotherapy, University of Queensland, Brisbane, Australia aut Stokes Maria Department of Physiotherapy, University of Queensland, Brisbane, Australia aut Taylor Robert Department of Medical Physics, Hope Hospital, Salford, UK aut Cooper Robert Rheumatic Diseases Centre, University of Manchester, Manchester, UK aut European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 64/3(1992-05-01), 199-203 0301-5548 64:3<199 1992 64 421 https://doi.org/10.1007/BF00626281 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00626281 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lee Darryl Department of Physiotherapy, University of Queensland, Brisbane, Australia aut NATIONALLICENCE 700 1- Stokes Maria Department of Physiotherapy, University of Queensland, Brisbane, Australia aut NATIONALLICENCE 700 1- Taylor Robert Department of Medical Physics, Hope Hospital, Salford, UK aut NATIONALLICENCE 700 1- Cooper Robert Rheumatic Diseases Centre, University of Manchester, Manchester, UK aut NATIONALLICENCE 773 0- European Journal of Applied Physiology and Occupational Physiology Springer-Verlag 64/3(1992-05-01), 199-203 0301-5548 64:3<199 1992 64 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer