References
- Aaras , A. 1996 . Reproducibility and stability of normalized EMG measurements on musculus trapezius . Ergonomics , 39 : 171 – 185 .
- Allen , G. M. , Gandevia , S. C. and McKenzie , D. K. 1995 . Reliability of measurements of muscle strength and voluntary activation using twitch interpolation . Muscle & Nerve , 18 ( 6 ) : 593 – 600 .
- Arnall , F. A. 2002 . Between-days reliability of electromyographic measures of paraspinal muscle fatigue at 40, 50 and 60% levels of maximal voluntary contractile force . Clinical Rehabilitation , 16 : 761 – 771 .
- Arvidsson , A. , Grassino , A. and Lindström , L. 1984 . Automatic selection of uncontaminated electromyogram as applied to respiratory muscle fatigue . Journal of Applied Physiology , 56 ( 3 ) : 568 – 575 .
- Blangsted , A. K. , Hansen , K. and Jensen , C. 2003 . Muscle activity during computer-based office work in relation to self-reported job demands and gender . European Journal of Applied Physiology , 89 : 352 – 358 .
- Brennan , R. L. 2001 . Generalizability Theory , New York : Springer-Verlag .
- De Luca , C. J. 1997 . The use of surface electromyography in biomechanics . Journal of Applied Biomechanics , 13 : 135 – 163 .
- Delisle , A. 2005 . Physical exposure of sign language interpreters: baseline measures and reliability analysis . European Journal Applied Physiology , 94 ( 4 ) : 448 – 460 .
- Delisle , A. . The effect of forearm support during computer work: a field study . IEA2006: 16th world congress on ergonomics . July 10–14 2006 , Maastricht, Netherlands. Amsterdam : Elsevier .
- Fleiss , R. L. 1986 . The design and analysis of clinical experiments , New York : John Wiley and Sons .
- Hagg , G. M. 1991 . “ Static work loads and occupational myalgia – a new explanation model ” . In Electromyographical kinesiology , Edited by: Anderson , P. A. , Hobart , D. J. and Danoff , J. V. 141 – 144 . Amsterdam : Elsevier Science .
- Hagg , G. M. and Astrom , A. 1997 . Load pattern and pressure pain threshold in the upper trapezius muscle and psychosocial factors in medical secretaries with and without shoulder/neck disorders . International Archives Occupational and Environmental Health , 69 ( 6 ) : 423 – 432 .
- Hansson , G.-A. 2000 . Sensitivity of trapezius electromyography to differences between work tasks – influence of gap definition and normalisation methods . Journal of Electromyography and Kinesiology , 10 ( 2 ) : 103 – 115 .
- Hatch , J. P. , Prihoda , T. J. and Moore , P. J. 1992 . The application of generalizability theory to surface electromyographic measurements during psychophysiological stress testing: how many measurements are needed? . Biofeedback & Self Regulation , 17 ( 1 ) : 17 – 39 .
- Hermens , H. J. and Vollenbroek-Hutten , M. M. 2004 . Effects of electrode dislocation on electromyographic activity and relative rest time: effectiveness of compensation by a normalisation procedure . Medical & Biological Engineering & Computing , 42 ( 4 ) : 502 – 508 .
- Hodges , P.W. and Bui , B.H. 1996 . A comparison of computer-based methods for the determination of onset of muscle contraction using electromyography . Electroencephalography and Clinical Neurophysiology , 101 : 511 – 519 .
- Jensen , C. , Vasseljen , O. and Westgaard , R. H. 1993 . The influence of electrode position on bipolar surface electromyogram recordings of the upper trapezius muscle . European Journal of Applied Physiology and Occupational Physiology , 67 ( 3 ) : 266 – 273 .
- Kellis , E. and Katis , A. 2008 . Reliability of EMG power-spectrum and amplitude of the semitendinosus and biceps femoris muscles during ramp isometric contractions . Journal of Electromyography and Kinesiology , 18 : 351 – 358 .
- Kollmitzer , J. , Ebenbichler , G. R. and Kopf , A. 1999 . Reliability of electromyographic measurements . Clinical Neurophysiology , 110 : 725 – 734 .
- Larivière , C. , Delisle , A. and Plamondon , A. 2005 . The effect of sampling frequency on EMG measures of occupational mechanical exposure . Journal of Electromyography and Kinesiology , 15 ( 2 ) : 200 – 209 .
- Larivière , C. 2002 . Evaluation of measurement strategies to increase the reliability of EMG indices to assess back muscle fatigue and recovery . Journal of Electromyography and Kinesiology , 12 : 91 – 102 .
- Larsson , B. 1999 . Reproducibility of surface EMG during dynamic shoulder forward flexions: a study of clinically healthy subjects . Clinical Physiology , 19 : 433 – 439 .
- Mathiassen , S. E. , Burdorf , A. and van der Beek , A. J. 2002 . Statistical power and measurement allocation in ergonomic intervention studies assessing upper trapezius EMG amplitude. A case study of assembly work . Journal of Electromyography and Kinesiology , 12 ( 1 ) : 45 – 57 .
- Mathiassen , S. E. , Winkel , J. and Hagg , G. M. 1995 . Normalization of surface EMG amplitude from the upper trapezius muscle in ergonomic studies – a review . Journal of Electromyography and Kinesiology , 5 : 197 – 226 .
- Morton , J. P. 2005 . Reliability of maximal muscle force and voluntary activation as markers of exercise-induced muscle damage . European Journal Applied Physiology , 94 ( 5–6 ) : 541 – 548 .
- Nordander , C. 2000 . Muscular rest and gap frequency as EMG measures of physical exposure: the impact of work tasks and individual related factors . Ergonomics , 43 ( 11 ) : 1904 – 1919 .
- Palmerud , G. 1995 . Voluntary redistribution of muscle activity in human shoulder muscles . Ergonomics , 38 ( 4 ) : 806 – 815 .
- Sandsjo , L. 2000 . Trapezius muscle activity, neck and shoulder pain, and subjective experiences during monotonous work in women . European Journal of Applied Physiology , 83 ( 2–3 ) : 235 – 238 .
- Shavelson , R. J. and Webb , N. M. 1991 . Generalizability theory. A primer , London : Sage Publications .
- Shrout , P.E. and Fleiss , J. L. 1979 . Intraclass correlations: uses in assessing rater reliability . Psychological Bulletin , 86 : 420 – 428 .
- Sood , D. , Nussbaum , M. A. and Hager , K. 2007 . Fatigue during prolonged intermittent overhead work: reliability of measures and effects of working height . Ergonomics , 50 : 497 – 513 .
- Sparto , P. and Parnianpour , M. 2001 . Generalizability of trunk muscle EMG and spinal forces . IEEE Engineering in Medicine and Biology , 20 ( 6 ) : 72 – 81 .
- Thorn , S. 2007 . Trapezius muscle rest time during standardized computer work – A comparison of female computer users with and without self-reported neck/shoulder complaints . Journal of Electromyography and Kinesiology , 17 ( 4 ) : 420 – 427 .
- Vasseljen , O. Jr and Westgaard , R. H. 1995 . A case-control study of trapezius muscle activity in office and manual workers with shoulder and neck pain and symptom-free controls . International Archives of Occupational Environmental and Health , 67 ( 1 ) : 11 – 18 .
- Veiersted , K. B. 1996 . Reliability of myoelectric trapezius muscle activity in repetitive light work . Ergonomics , 39 : 797 – 807 .
- Veiersted , K. B. , Westgaard , R. H. and Anderson , P. 1993 . Electromyographic evaluation of muscular work pattern as a predictor of trapezius myalgia . Scandinavian Journal of Work, Environment and Health , 19 ( 4 ) : 284 – 290 .
- Voerman , G. E. , Vollenbroek-Hutten , M. M. and Hermens , H. J. 2007 . Upper trapezius muscle activation patterns in neck-shoulder pain patients and healthy controls . European Journal of Applied Physiology , 102 ( 1 ) : 1 – 9 .
- Voerman , G. E. 2004 . The influence of different intermittent myofeedback training schedules on learning relaxation of the trapezius muscle while performing a gross-motor task . European Journal of Applied Physiology , 93 ( 1–2 ) : 57 – 64 .
- Vollenbroek-Hutten , M. 2006 . Are changes in pain induced by myofeedback training related to changes in muscle activation patterns in patients with work-related myalgia? . European Journal of Applied Physiology , 96 ( 2 ) : 209 – 215 .
- Westad , C. and Westgaard , R. H. 2005 . The influence of contraction amplitude and firing history on spike-triggered averaged trapezius motor unit potentials . The Journal of Physiology , 562 ( 3 ) : 965 – 975 .
- Westgaard , R. H. , Vasseljen , O. and Holte , K. A. 2001 . Trapezius muscle activity as a risk indicator for shoulder and neck pain in female service workers with low biomechanical exposure . Ergonomics , 44 ( 3 ) : 339 – 353 .