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  • Exercise and work-related musculoskeletaldisorders in neck, shoulders and low back

  • Exercise and work-related musculoskeletal disorders in neck,Exercise and work-related musculoskeletal disorders in neck,Exercise and work-related musculoskeletal disorders in neck,Exercise and work-related musculoskeletal disorders in neck,Exercise and work-related musculoskeletal disorders in neck,shoulders and low backshoulders and low backshoulders and low backshoulders and low backshoulders and low back Mogens Theisen Pedersen 2003Institute of Exercise and Sport Sciences, University of Copenhagen

    PhD thesis

    Submitted August 2003Defended November 2003

    Opponents:Overlge, dr.med. Fin Biering-Srensen, Rigshospitalet, TH 2091 - ???

    Associate professor A.J. van der Beek, Dept. of Social Medicine, Institute forResearch in extramural Medicin, VU University Medical Centre, Amsterdam.

    Chairman, Professor Jens Bo Nielsen, Institute of Exercise and Sport Sciences,University of Copenhagen

    Layout: Allis Skovbjerg JepsenPrinted By: A3 Tryk & Reklame, SilkeborgISBN: 87 89361 98 9

  • Mogens Theisen Pedersen

    Exercise and work-related musculoskeletaldisorders in neck, shoulders and low back

    PhD Thesis

    National Institute of Occupational HealthDepartment of Physiology

    Institute of Exercise and Sport SciencesFaculty of Science, University of Copenhagen, Denmark

    2003

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    ANOVA analysis of varianceEMG electromyographyLBP low back painMVC maximal voluntary static contraction forceRFD rate of force developmentRCT randomised controlled studySL sudden back loadingWMSDs work related musculoskeletal disorders

    List of Abbreviations

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    Content

    List of List of List of List of List of AbbreviationsAbbreviationsAbbreviationsAbbreviationsAbbreviations ................................................................................................................................................................................................................................................................................................................................................................... 44444

    ContentContentContentContentContent ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 55555

    PrefacePrefacePrefacePrefacePreface ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 77777

    AcknowledgementsAcknowledgementsAcknowledgementsAcknowledgementsAcknowledgements ....................................................................................................................................................................................................................................................................................................................................................................................... 88888

    List of papersList of papersList of papersList of papersList of papers .................................................................................................................................................................................................................................................................................................................................................................................................................................... 99999

    IntroductionIntroductionIntroductionIntroductionIntroduction ......................................................................................................................................................................................................................................................................................................................................................................................................................................... 1010101010Individual risk factors for upper neck, shoulder and back pain 13The traditional view: Muscle strength and endurance 13

    Neck and shoulder 13Low back 14

    The newcomer: motor control aspects 14Modification of individual physical capacity as a preventive

    measure: Results from intervention studies 16Shoulder and neck 16Low back 17

    Aims and hypothesesAims and hypothesesAims and hypothesesAims and hypothesesAims and hypotheses ......................................................................................................................................................................................................................................................................................................................................................... 1818181818

    Material and methodsMaterial and methodsMaterial and methodsMaterial and methodsMaterial and methods ............................................................................................................................................................................................................................................................................................................................................... 1919191919Overall design 19Material 21Training 22Sudden back loading (SL) 27Electromyography 28Neck-shoulder complaints 29Questionnaires about training and the effect of training 29Statistics 30

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    ResultsResultsResultsResultsResults ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 3232323232Training effect on muscular complaints 32Training effect on muscle strength, muscle endurance and

    mechanical motor control variables 33Training effect on EMG in the motor control studies 34Participants perception of the training programs and

    the effect of training 35Study I 35Study III 37Study IV 37

    DiscussionDiscussionDiscussionDiscussionDiscussion ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 3838383838Effect of training on physical capacity 38Changes in musculoskeletal complaints; Intervention

    study design 40Participants perception of the training programmes 41Implications of the effect of readiness training 42The effect of training physiological changes 43

    ConclusionsConclusionsConclusionsConclusionsConclusions .............................................................................................................................................................................................................................................................................................................................................................................................................................................. 4646464646

    ReferencesReferencesReferencesReferencesReferences........................................................................................................................................................................................................................................................................................................................................................................................................................................................ 4848484848

    SummarySummarySummarySummarySummary .................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 5858585858

    Dansk resumDansk resumDansk resumDansk resumDansk resum .......................................................................................................................................................................................................................................................................................................................................................................................................................... 5959595959

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    Preface

    This PhD- project is the result of co-operation between the Institute ofExercise and Sport Sciences (IESS), Co