Comparison of four specific dynamic office chairs with a conventional office chair: Impact upon muscle activation, physical activity and posture

Aarås, 2000, Work with visual display unit: health consequences, Int. J. Hum. Comput. Interact., 12, 107, 10.1207/S15327590IJHC1201_5 Adams, 1986, An electronic inclinometer technique for measuring lumbar curvature, Clin. Biomech., 1, 130, 10.1016/0268-0033(86)90002-1 Althoff, I., Brinckmann, P., Frobin, W., Sandover, J., Burton, K., 1993. Die Bestimmung der Belastung der Wirbelsäule mit Hilfe einer Präzisionsmessung der Körpergröße. BAuA, Berlin. Technical Report Bundesanstalt für Arbeitsschutz und Arbeitsmedizin (BAuA). Andersson, 1977, Quantitative electromyographic studies of back muscle activity related to posture and loading, Orthop. Clin. North Am., 8, 85, 10.1016/S0030-5898(20)30938-X Andersson, 1975, The sitting posture: an electromyographic and discometric study, Orthop. Clin. North Am., 6, 105, 10.1016/S0030-5898(20)31205-0 Ariëns, 2000, Physical risk factors for neck pain, Scand. J. Work Environ. Health, 26, 7, 10.5271/sjweh.504 Bennett, 1989, Comparison of integrated electromyographic activity and lumbar curvature during standing and during sitting in three chairs, Phys. Ther., 69, 902, 10.1093/ptj/69.11.902 Bridger, 1989, Effects of seat slope and hip flexion on spinal angles in sitting, Hum. Factors, 31, 679, 10.1177/001872088903100604 Buckle, 2002, The nature of work-related neck and upper 1imb musculoskeletal disorders, Appl. Ergon., 33, 207, 10.1016/S0003-6870(02)00014-5 Carter, 1994, Musculoskeletal problems at VDT work: a review, Ergonomics, 37, 1623, 10.1080/00140139408964941 De Looze, 2003, Sitting comfort and discomfort and the relationships with objective measures, Ergonomics, 46, 985, 10.1080/0014013031000121977 Delisle, 2006, Comparison of three computer office workstations offering forearm support: impact on upper limb posture and muscle activation, Ergonomics, 49, 139, 10.1080/10610270500450739 Diebschlag, 1990, Ergonomische Sitzgestaltung zur Prävention sitzhaltungsbedingter Wirbelsäulenschädigungen, Arbeitsmed. Sozialmed. Präventivmed. (ASP), 25, 123 Eklund, 1984, Shrinkage as a measure of the effect of load on the spine, Spine, 9, 189, 10.1097/00007632-198403000-00009 Ellegast, 2007, Effects of using dynamic office chairs on posture and EMG in standardized office tasks, 34 Ellegast, 2009, Workload assessment in field using the ambulatory CUELA system, vol. 5620, 221 Ellegast, R.P., Keller, K., Hamburger, R., Berger, H., Krause, F., Groenesteijn, L., Blok, M., Vink, P., 2008. Ergonomische Untersuchung besonderer Büroarbeitsstühle. Deutsche Gesetzliche Unfallversicherung (DGUV), Sankt Augustin. BGIA-Report 5/2008. http://www.dguv.de/bgia/de/pub/rep/rep07/bgia0508/index.jsp. Ellegast, 2000, Portable posture and motion measuring system for use in ergonomic field analysis, 47 Fernstrom, 1994, Electromyographic activity during typewriter and keyboard use, Ergonomics, 37, 477, 10.1080/00140139408963664 Glitsch, 2005, EMG-Signal-Prozessor-Modul zur Langzeitanalyse, 501 Glitsch, 2006, Physical and physiological workload profiles of overhead line service technicians Graf, 1995, An assessment of seated activity and postures at five workplaces, Int. J. Indust. Ergon., 15, 81, 10.1016/0169-8141(94)00027-Z Groenesteijn, 2009, Effects of differences in office chair controls, seat and backrest angle design in relation to tasks, Appl. Ergon., 40, 362, 10.1016/j.apergo.2008.11.011 Hales, 1996, Epidemiology of work-related musculoskeletal disorders, Orthop. Clin. North Am., 27, 679, 10.1016/S0030-5898(20)32117-9 Hartvigsen, 2000, Is sitting-while-at-work associated with low back pain? A systematic, critical literature review, Scand J. Public Health, 28, 230 Hermens, 1997 Jensen, 1993, The influence of electrode position on bipolar surface electromygram recordings of the upper trapezius muscle, Eur. J. Appl. Physiol., 67, 266, 10.1007/BF00864227 Jensen, 1998, Job demands, muscle activity and musculoskeletal symptoms in relation to work with the computer mouse, Scand. J. Work Environ. Health, 24, 418, 10.5271/sjweh.364 Kilbom, 1987, Short- and long-term effects of extreme physical inactivity: a brief review, 219 Kingma, 2000, Monitoring water content in deforming intervertebral disc tissue by finite element analysis of MRI data, Magn. Resonan. Imaging Med., 44, 650, 10.1002/1522-2594(200010)44:4<650::AID-MRM21>3.0.CO;2-0 Kroemer, 1994, Sitting (or standing?) at the computer workplace, 181 Luttmann, 2003, Feldstudien zu Muskelbeanspruchung und Beschwerden bei ganztägiger Büroarbeit, ErgoMed, 27, 149 Luttmann, 2003, Long-term EMG study on muscular strain and fatigue at office work Mani, 2000, Work-related upper extremity musculoskeletal disorders, Primary Care, 27, 845, 10.1016/S0095-4543(05)70180-9 Parent-Thirion, 2007 Rohlmann, 2002, Wirbelsäulenbelastung beim Sitzen auf einem Bürostuhl mit nach hinten kippbarer Rückenlehne, Biomed. Techn. (Berl.), 47, 91, 10.1515/bmte.2002.47.4.91 Schön, 2009, Feldstudie zum dynamischen Sitzen unter verschiedenen Arbeitsplatzbedingungen, Zentralblatt für Arbeitsmedizin Arbeitsschutz Ergonomie, 59, 44, 10.1007/BF03344201 Serber, 1994, The study of lumbar motion in seating, 423 Todd, 2007, Physical implications of prolonged sitting in a confined posture – a literature review, Ergon. SA, 19, 7 Van Deursen, 1999, Length of the spine while sitting on a new concept for an office chair, Appl. Ergon., 31, 95, 10.1016/S0003-6870(99)00030-7 Van Deursen, 2001, Passive vertebral rotation causes instantaneous depressurization of the nucleus pulposus, J. Biomech., 34, 405, 10.1016/S0021-9290(00)00210-4 Van Dieën, 1994, Repetitive lifting and spinal shrinkage, effects of age and lifting technique, Clin. Biomech., 9, 367, 10.1016/0268-0033(94)90067-1 Van Dieën, 2001, Effects of dynamic office chairs on trunk kinematics, trunk extensor EMG and spinal shrinkage, Ergonomics, 44, 739, 10.1080/00140130120297 Van Dieën, 1993, An investigation into the relevance of the pattern of temporal activation with respect to erector spinae muscle endurance, Eur. J. Appl. Physiol., 66, 70, 10.1007/BF00863403 Vink, 2005 Weber, 2009, A person-centered measurement system for quantification of physical activity and energy expenditure at workplaces, vol. 624, 121 Weber, 2007, Assessment of everyday physical activity: development and evaluation of an accelerometry-based measuring system, Int. J. Comput. Sci. Sport, 6, 4 Wittig, T., 2000. Ergonomische Untersuchung alternativer Büro- und Bildschirm-arbeitsplatzkonzepte. 1. Auflage. Wirtschaftsverlag NW Verlag für neue Wissenschaft GmbH, Bremerhaven, 2000. (Schriftenreihe der Bundesanstalt für Arbeitsschutz und Arbeitsmedizin: Forschungsbericht, Fb 878).