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  • 1.
    Burström, Lage
    et al.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Hagberg, Mats
    Department of Occupational and Environmental Medicine, Sahlgrenska University Hospital, Box 414, SE-405 30 Gothenburg, Sweden.
    Liljelind, Ingrid
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Lundström, Ronnie
    Umeå University, Faculty of Science and Technology, Centre for Biomedical Engineering and Physics (CMTF).
    Nilsson, Tohr
    Department of Occupational and Environmental Medicine, Sundsvall Hospital, Sundsvall, SE-851 86 Sweden.
    Pettersson, Hans
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational and Environmental Medicine.
    Wahlström, Jens
    Department of Occupational and Environmental Medicine, Sahlgrenska University Hospital, Box 414, SE-405 30 Gothenburg, Sweden.
    A follow-up study of welders’ exposure to vibration in a heavy engineering production workshop2010In: Journal of Low Frequency Noise Vibration and Active Control, ISSN 0263-0923, Vol. 29, no 1, p. 33-39Article in journal (Refereed)
    Abstract [en]

    Manual work involving vibrating power tools is associated with symptoms that include vascular, neurological and musculoskeletal disorders. This study examines the vibration exposure of welders to determine the change between 1987 and 2008. Vibration measurements on handheld tools were used to evaluate the acceleration and the daily exposure time was determined by subjective rating. From these data, the 8-hour equivalent vibration exposure A(8), has been calculated. During the period, the A(8) decreased from 3.9 m/s2 to 1.9 m/s2. It was concluded that this decrease is the result of fewer vibrating tools and a decrease in daily exposure time. Although the daily vibration exposure has decreased over the study time, for some welders the daily vibration exposure A(8) is still above the action value set by the EU directive on vibration. This means more effort should be spent to decrease vibration exposure.

  • 2.
    Ljungberg, Jessica
    et al.
    Umeå University, Faculty of Medicine, Public Health and Clinical Medicine.
    Neely, Greg
    Lundström, Ronnie
    Umeå University, Faculty of Medicine, Public Health and Clinical Medicine.
    Effects on spatial skills after exposure to low frequency noise2004In: Journal of Low Frequency Noise Vibration and Active Control, ISSN 0263-0923, Vol. 23, no 1, p. 1-6Article in journal (Refereed)
  • 3.
    Lundquist, Pär
    et al.
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational Medicine.
    Holmberg, Kjell
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational Medicine.
    Landström, Ulf
    Umeå University, Faculty of Medicine, Department of Public Health and Clinical Medicine, Occupational Medicine.
    Low frequency noise and annoyance in classroom2000In: Journal of Low Frequency Noise Vibration and Active Control, ISSN 0263-0923, Vol. 19, no 4, p. 175-181Article in journal (Refereed)
    Abstract [en]

    The most common method for noise assessment is the A-weighted sound pressure level. The question has been raised as to whether the frequency weighting with an A-filter gives a correct result when assessing the annoyance response to noise containing strong low frequency noise (LFN) components. One method suggested to identify LFN is the dB(C) – dB(A) difference. The aims of this study are to investigate if background noise in Swedish elementary schools is to be considered as LFN, further to test the hypothesis that students exposed to audible LFN at high levels are more annoyed than students exposed to LFN at lower levels. The results indicate that the noise in 16 out of 22 classrooms should be considered as LFN. The analysis did not show any difference in rated annoyance between students exposed to high LFN levels and students exposed to low LFN levels.

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