Conference Program



Monday, 27 August, 10:30-12:00, Amphitheater
MA1S Gendered exposures and their consequences


Peter W. Johnson, PhD
Assistant Professor
Department of Environmental and Occupational Health Sciences
University of Washington

Karen Messing, PhD
Full Professor
Université du Québec à Montréal


This symposium will focus and present the latest findings on gender and work in order to and advance the science, knowledge and understanding differences in exposure in this important area of work-related MSDs. A number of differences between men and women exist in terms of the prevalence and incidences of work related musculoskeletal disorders. Thus, there is a need to study the types of tasks assigned to women and men, differences in exposures, the risks specific to women and men at work and interactions between work and family/social life. The goal of this symposium is thus to explore differences in exposure from tool design to social constructs with the long term goal of advancing the science, knowledge and prevention of work-related MSDs.

Lessons from analyses of MSDs among respondents to the 1998 Québec health survey: what questions on exposures should be incorporated in the next survey so as to take account of gender?
Authors: Messing K, Stock S, Tissot F
Presenter: Messing K

Equal task, equal exposure? Are men and women with the same tasks equally exposed to awkward working postures?
Authors: Hooftman W, van der Beek A, van de Wal B, Knol D, Bongers P, Burdorf A, van Mechelen W
Presenter: Hooftman W

Upper extremity disorders in health care and manufacturing industries: differences between men and women
Authors: Silverstein B, Fan ZJ, Smith C, Bao S, Howard N, Spielholz P, Bonauto D
Presenter: Silverstein B

Gendered working and living conditions and their associations with persistent neck/shoulder and low back disorders
Authors: Leijon O, Lindberg P, Josephson M, Wiktorin C
Presenter: Leijon O

Gender differences in time pressure and health among journalists
Authors: Karlqvist L, Tyrkkö A
Presenter: Karlqvist L

Computer input devices: gender and stature based difference in exposure
Authors: Johnson P, Dennerlein J
Presenter: Johnson P


Monday, 27 August, 13:00-14:30, Amphitheater
MB4S Engaging the workplace in safe and sustained return to work - what are the key competencies?


Patrick Loisel
Centre for Action in Work Disability Prevention and Rehabilitation
Université de Sherbrooke

Glenn Pransky
Director, Center for Disability Research
Liberty Mutual Research Institute for Safety


Achieving safe and sustainable RTW is often an elusive goal. Even when RTW after a work injury is achieved, success is often limited; recurrent disability in occupational low back pain is a significant problem. RTW success requires re-establishing adequate work capabilities, the worker and the workplace both adapting to a new situation post-injury, and ongoing, active efforts to collectively solve problems at the workplace. This often involves interactions among workers, physicians, employers, labor representatives, and insurers, parties who are not used to communication with each other. These challenges have led to development of the RTW facilitator role, a key position in all disability prevention interventions. However, scientific reports rarely describe the competencies or functions of this role, and how they may vary across situations.

In this symposium, leading researchers in prevention of disability in MSD’s will discuss the specific competencies and implementation of this role in their projects, focusing on persons who interact directly with the workplace. The result will be a clear understanding of common, specialty-independent skills and actions that are most important to achieve RTW success. Researchers and practitioners in occupational health and ergonomics who are involved with return to work will benefit from this new knowledge, in design of future studies and practical interventions.

Integrating ergonomics and job accommodation in disability case management: experience in the ICM study
Authors: Feuerstein M
Presenter: Feuerstein M

How to engage and develop supervisor competencies to improve return-to-work outcomes
Authors: Shaw W, Pransky G
Presenter: Shaw W

Awareness of social context: a key competency for return-to-work facilitators
Authors: Clarke A
Presenter: Clarke A

Return to work facilitator competencies: what does the research say?
Authors: Pransky G, Shaw W, Loisel P
Presenter: Shaw W

Practical usage of ergonomic tools and methods during the rehabilitation of workers with low back disability
Authors: Costa-Black K, Imbeau D, Halpern M, Durand M-J, Baril R, Franche R-L
Presenter: Costa-Black K

Competencies for RTW effectiveness: lessons from the Previcap program
Authors: Loisel P
Presenter: Loisel P


Monday, 27 August, 16:00-17:30, HIM Lecture Room
MC1S The use of myofeedback in prevention and treatment of work-related musculoskeletal disorders


Leif Sandsjö
Sahlgrenska Academy at Göteborg University

Other organizers:

Co-chair: Karen Søgaard
National Research Centre for the Working Environment

Miriam Vollenbrock-Hutten
Roessingh Research and Development


Myofeedback (i.e. biofeedback based on the myoelectric signal of a muscle) methods have been successfully applied in education and training of work technique both in order to prevent work-related musculoskeletal disorders to develop and in treatment when symptoms are at hand. A recently developed technique is based on the observation that subjects with chronic pain tend to show altered muscle activation patterns manifested as a decreased ability to relax their muscles when possible at work. As subjects may not be aware of this as it often concerns rather low levels of activation an accurate feedback signal on the absence of sufficient muscle rest is hypothesised to contribute to a greater awareness of undesirable muscle activation and lead to diminishing pain.

This symposium aims primarily at presenting evidence in favour of or against the use of different types of myofeedback techniques in workplace intervention studies addressing work-related musculoskeletal disorders, but also methodological issues as well as novel approaches will be considered.

Differences in accumulated EMG-gap time between truck drivers with and without shoulder/neck disorders
Authors: Hägg G, Pettersson B
Presenter: Hägg G

Long periods with sustained low-level trapezius muscle activity relates to neck pain among forest machine operators
Authors: Østensvik T, Nilsen P, Veiersted KB
Presenter: Østensvik T

The influence of biofeedback training sessions on trapezius muscle activity during normal computer work task
Authors: Søgaard K, Blangsted T, Dahl B, Christensen H
Presenter: Søgaard K

Background design and development of a myofeedback intervention for work-related neck shoulder problems
Authors: Hermens H, Sandsjö L, Voerman G, Voellenbroek-Hutten M
Presenter: Hermens H

Effects and mechanisms of myofeedback training in females with work-related neck-shoulder complaints
Authors: Vollenbroek-Hutten M, Voerman G, Sandsjo L, Larsman P, Kadefors R, Hermens H
Presenter: Vollenbroek-Hutten M

Biofeedback — when and how? Parameters to setup for an effective biofeedback
Authors: Madeleine P, Samani A, Søgaard K
Presenter: Madeleine P


Monday, 27 August, 16:00-17:30, Rotunda
MC2S Engaging return-to-work stakeholders


Amanda E. Young
Center for Disability Research
Liberty Mutual Research Institute for Safety

Radek Wasiak
Center for Disability Research
Liberty Mutual Research Institute for Safety


There are numerous stakeholder groups involved in the return-to-work (RTW) process, including workers, employers, health-care providers, payers, legal representatives and society, and while it has been recognized that all stakeholders have something to gain from the successful RTW of injured workers, our understanding of how best to engage stakeholders in the RTW process is still limited. In the context of the developmental nature of RTW, presenters will share their knowledge regarding how to facilitate stakeholder’s engagement and increase commitment to the achievement of positive RTW experiences and successful RTW outcomes. This will be followed by a panel discussion with questions from the facilitators and audience members.

Challenging the path to economic inactivity: shifting attitudes to health and work
Authors: Aylward M
Presenter: Aylward M

Communication between health care providers and return-to-work
Authors: Anema J, van Amstel R, Venema A, Jettinghoff K, Verbeek J, Nauta A, van Putten D, Buijs P
Presenter: Anema J

Stakeholder views on rights responsibilities and accountability in vocational rehabilitation
Authors: McPherson K
Presenter: McPherson K

Constructing a rehabilitation program hand by hand clinician employer and insurance. Is it the answer?
Authors: Durand M-J
Presenter: Durand M-J

Implementing a return-to-work intervention on safe grounds: results of a feasibility study in the French healthcare system
Authors: Fassier J-B, Durand M-J, Loisel P
Presenter: Fassier J-B

Resolving paradigm clashes between health providers and insurers
Authors: Nicholas M, Cousins M, Smith J, Johnson J
Presenter: Nicholas M


Tuesday, 28 August, 10:30-12:00, Amphitheater
TA1S Economic evaluations in research on work-related musculoskeletal disorders


Johannes R. (Han) Anema, MD, PhD
Occupational Physician, Assistant Professor
Department of Public and Occupational Health and EMGO Institute
Body@Work TNO VUmc, VU University Medical Center


In many countries, productivity loss and costs due to work-related MSD are high and a major concern for employees, their employers, policy makers, insurance companies, and occupational health care specialists. Therefore, economic evaluations of interventions to prevent (work disability due to) MSD are of major relevance from societal and company’s perspective. To date, however, cost-effectiveness, cost-utility and/or cost-benefit analyses of occupational health interventions are rarely conducted. One of the reasons might be that, currently, the methodology for calculating costs of productivity loss from the company’s perspective is poorly developed. There is also no scientific consensus on the use of cost/benefit models to show employers and decision makers the value of occupational health interventions. The aim of this symposium is to exchange results of recent studies and exchange ideas and experience on methodology used evaluating economic outcomes for work-related MSDs

Evaluation of workplace interventions to reduce low back pain and MSDs
Authors: Lahiri S, Gold J, Levenstein C
Presenter: Lahiri S

Cost-benefit and cost-effectiveness analysis of a disability prevention model for back pain management: a six year follow-up study
Authors: Loisel P
Presenter: Loisel P

Cost-effectiveness of return-to-work interventions for low back pain results of three Dutch randomised controlled trials
Authors: Anema J, Heymans M, Hlobil H, Staal J, Steenstra I, van Mechelen W
Presenter: Anema J

The cost and benefits of mechanized equipment on physical load among road workers and floor layers in the construction industry
Authors: Burdorf A
Presenter: Burdorf A

Work disability and costs due to recurrence of low back pain: longer and more costly than in first episodes
Authors: Wasiak R, Kim J, Pransky G
Presenter: Wasiak R

Preventive ergonomic strategies demonstrate substantial cost benefit for small to mid-size employers
Authors: Heller-Ono A
Presenter: Heller-Ono A


Tuesday, 28 August, 10:30-12:00, Rotunda
TA3S Development and application of tools for evaluating interventions to prevent musculoskeletal disorders


Susan Stock, MD, MSc, FRCPC
Institut national de santé publique du Québec


This symposium contrasts the approaches and perspectives of ergonomists, epidemiologists, engineers and legal researchers from both Europe and North America in the evaluation of MSD prevention interventions. We propose one 90-minute session focusing on methodologic tools to be used in the evaluation of ergonomic interventions in different work settings: development of such tools, the validation of their use in evaluation studies, how they can strengthen the quality of evaluation studies and their limits.

Ergonomics and epidemiology intervention and evaluation: how do the perspectives differ?
Authors: Coutarel F, Caroly S, Roquelaure Y, Daniellou F, Landry A
Presenter: Coutarel F

MSD prevention interventions initiated by the Québec compensation board (CSST): evaluation of natural intervention practices in work settings
Authors: St-Vincent M, Denis D, Imbeau D, Cole D
Presenter: St-Vincent M

Reducing the exposure to risk factors: are interventions really effective and are measurement strategies adequate?
Authors: Delisle A, Larivière C
Presenter: Delisle A

Development of indicators to describe the process of ergonomic interventions to prevent MSD
Authors: Vézina N, Ouellet S, Ledoux E, Messing K, Chatigny C, Seifert A, Fortin S, St-Charles J, Durand M, Comtois A, Kalinova E
Presenter: Vézina N

Analysis of the socio-organizational aspects of an intervention: tools for process evaluation studies
Authors: Bellemare M, Baril-Gingras G, Poulin P, Ross J
Presenter: Bellemare M

Societal level interventions to reduce work-related injuries: what can be learned from Washington state?
Authors: Silverstein B, Foley M, Cullen J, Howard N
Presenter: Silverstein B


Tuesday, 28 August, 13:00-14:30, Amphitheater
TB2S The Cinderella Hypothesis revisited: consequences for prevention of musculoskeletal disorders


Karen Søgaard
National Research Centre for the Working Environment

Other organizers:

Leif Sandsjö
The Sahlgrenska Academy at Göteborg University

Prof Dr. Ir. H. Hermens
Roessingh Research and Development


Over the last decades the Cinderella Hypothesis put forward by Göran Hägg has inspired a number of research groups. One of the main questions has been if Hennemans original finding of a size related ordered recruitment pattern is valid also for the more diverse human muscle activities during occupational work. Another question has been if such a recruitment pattern plays a role in pathophysiology of muscle disorders and if protective mechanisms such as motor unit rotation takes place during muscle fatigue. In this symposium it is the aim to present an overview of the knowledge gained since the hypothesis was originally presented and to evaluate the evidence of a robust size related ordered recruitment patterns underlying the activation of human muscles and causing long term activation of some low threshold motor units. Further, the aim is to evaluate the importance of such evidence in relation to the pathophysiology and the consequences for the future strategies in prevention of work related musculoskeletal disorders.

Revisiting the Cinderella muscle activity pattern as an explanatory model for development of musculoskeletal disorders can it be disproved?
Authors: Søgaard K, Sjøgaard G
Presenter: Søgaard K

Trapezius motor unit firing behavior a basis for further exploring the Cinderella hypothesis
Authors: Westgaard R
Presenter: Westgaard R

Cinderella and pathophysiology — are they linked?
Authors: Vøllestad N
Presenter: Vøllestad N

Cinderella, what is the clinical evidence
Authors: Røe C
Presenter: Røe C

Motor-unit recruitment in the trapezius muscle during occupationally relevant short and prolonged conditions
Authors: Forsman M, Thorn S, Sandsjö L
Presenter: Forsman M

Pain history pain perception and provoked pain related to electrophysiological activity in the trapezius muscle - a case control study with use of advanced EMG methods
Authors: Klipstein A, Läubli T
Presenter: Klipstein A


Wednesday, 29 August, 10:30-12:00, Amphitheater
WA2S Physiological measurement of possible mechanisms for chronic pain in computer workers


Bente R. Jensen, PhD
Associate Professor
Institute of Exercise and Sport Sciences
IFI/Panum Institute
University of Copenhagen


Chronic pain syndromes and disorders are common among computer users and constitute an important health and socio-economic problem in the industrialized world today. Despite that knowledge regarding the physiological mechanisms behind the chronic pain syndromes as well as potential functional consequences is lacking. Such knowledge is a prerequisite for efficient prevention, treatment and rehabilitation.

New methods have emerged for evaluating nerve and muscle function among computer users with pain in comparison to healthy controls. The new methodologies and findings will be presented. The idea is to bring together a group of scientists who have contributed to the understanding of the physiological mechanisms behind chronic symptoms among computer users by applying new methods in the field. The focus will be on nerve and muscle function in the upper extremities and shoulder/neck region. The methods include assessment of tissue oxygenation and oxygen kinetics, microdialysis, ultrasound, sensory function, motor control and movement strategies.

Wrist posture influences carpal tunnel pressure during keyboard use
Authors: Rempel D, Keir P, Bach J
Presenter: Rempel D

Nerve movement mechanosensitivity and sensory function in patients with non-specific arm pain
Authors: Greening J, Dilley A, Lynn B
Presenter: Greening J

Motor unit potential morphology and firing rate changes in patients with repetitive strain injury of the wrist extensor muscles
Authors: McLean L, Calder K, Stashuk D
Presenter: McLean L

Applying near infrared spectroscopy (NIRS) to assess muscular oxygenation during computer mouse use
Authors: Crenshaw A, Heiden M, Lyskov E, Djupsjöbacka M
Presenter: Crenshaw A

Tissue oxygenation and hemoglobin kinetics among healthy subjects and computer users with work related shoulder/neck pain
Authors: Jensen BR, Krag IR, Broneé L
Presenter: Jensen B

Interstitial changes measured with microdialysis in the trapezius muscle in healthy subjects and patients with trapezius myalgia
Authors: Sjøgaard G, Rosendal L, Kristiansen J, Larsson B, Gerdle B, Søgaard K
Presenter: Sjøgaard G


Wednesday, 29 August, 13:00-14:30, Amphitheater
WB3S What can the insides of muscles tell us about low level work stress and pain?


Fredrik Hellström
Centre for Musculoskeletal Research
University of Gävle

Other organizer:

Svend Erik Mathiassen
Centre for Musculoskeletal Research
University of Gävle


A central part in the pathophysiology behind the development and maintenance of work-related musculoskeletal disorders is the production of different metabolites and inflammatory substances during low level work, stress and pain. The production of metabolites and inflammatory substances are also strongly related to changes in muscle blood flow. With the development of techniques such as microdialysis, protein analysis and different imaging techniques questions concerning what substances are or are not present, can begin to find their answers. Focus of the presentations in this symposium are on what is taking place in muscles subjected to low level work, stress or pain in both people with and without musculoskeletal disorders. The symposium also aims at discussing what changes might occur in metabolites, inflammatory substances and blood flow during the process from a healthy muscle to a muscle with work-related myalgia.

Muscle tissue composition and muscle thickness in subjects with trapezius myalgia compared to healthy controls and the effect of training
Authors: Nielsen PK, Hansen L, Sjøgaard G, Andersen LL, Jensen LM, Nielsen DK, Tauber V, Søgaard K
Presenter: Nielsen P

Evaluation of trapezius using proteomic methods
Authors: Hadrevi J, Hellström F, Malm C, Frängsmyr L, Pedrosa-Domellöf F
Presenter: Hadrevi J

Effects of low-load repetitive work on sensitizing substances and metabolism in the trapezius muscle of female pain subjects and controls -determined with microdialysis and near infrared spectroscopy
Authors: Flodgren G, Crenshaw A, Hellström F, Fahlström M
Presenter: Flodgren G

Trapezius muscle interstitial changes in myalgic and non myalgic women during eight hours of repetitive manual work
Authors: Larsson B, Rosendal L, Kristiansen J, Sjøgaard G, Sogaard K, Gerdle B
Presenter: Larsson B

Skin temperature and muscle relative blood volume in the hand: are they correlated?
Authors: Gold J, Hanlon A, Soller B, Cherniack M
Presenter: Gold J

Visualising receptors of pain producing substances in muscles using PET/CT in patients with musculoskeletal disorders
Authors: Hellström F
Presenter: Hellström F


Wednesday, 29 August, 13:00-14:30, HIM Lecture Room
WB4S NIOSH Consortium studies of upper extremity musculoskeletal disorders


Bradley Evanoff, MD, MPH
Washington University School of Medicine


This symposium will describe the seven ongoing upper extremity studies from the NIOSH sponsored Work-related Musculoskeletal Disorder Consortium (MSDC). The MSDC studies seek to provide a quantitative understanding of the exposure-response relationships between ergonomic risk factors at the workplace, such as force and repetition, and the risk for developing hand, wrist, elbow , and shoulder musculoskeletal disorders (MSDs) across various occupations and industries. Though each study is independent, the seven prospective consortium studies have coordinated data collection methods in order to provide some common elements for exposure assessment and health outcomes assessment (physical examinations, questionnaires, and nerve conduction studies). Data pooling across studies will enable analyses with an expanded sample size (over 3000 subjects) and a broader distribution of exposures across a wide range of jobs and industries. This symposium will provide an overview of the NIOSH Consortium, briefly describe each study, and discuss the challenges the consortium has encountered in pooling data for exposures and health outcomes.

Overview of consortium/design of NIOSH study
Authors: Burt S, Waters T, Piacitelli L, Fine L, Silverstein B, Marras W, Garg A, Hegmann K, Rempel D, Gerr F, Cherniak M, Evanoff B, Crombie K, Papes D, Gordon J, Deddens J
Presenter: Burt S

Design of Washington State study/design of Utah/Wisconsin study
Authors: Silverstein B, Bao S, Fan Z, Smith C, Spielholz P, Howard N, Bonauto D, Garg A, Kapellusch J, Hegmann K, Thiese M, Bloswick D, Sesek R, Viikari-Juntura E
Presenter: Silverstein B, Hegmann K

Design of San Francisco study/design of St. Louis study
Authors: Rempel D, Goldberg R, Krause N, Harris C, Evanoff B, Dale A, Franzblau A
Presenter: Rempel D, Evanoff B

Design of Iowa study/design of Connecticut study
Authors: Cherniack M, Brammer AJ, Lundstrom R, Morse T, Neely G, Nilsson T, Peterson D, Toppila E, Warren N, Gerr F, Anton D, Merlino L
Presenter: Gerr F, Cherniack M

Exposure assessment across studies: challenges and opportunities
Authors: Silverstein B, Burt S, Garg A, Hegmann K, Rempel D, Gerr F, Cherniack M, Evanoff B
Presenter: Silverstein B

Health outcomes assessment across studies: challenges and opportunities
Authors: Rempel D, Burt S, Silverstein B, Garg A, Hegmann K, Gerr F, Cherniack M, Evanoff B
Presenter: Evanoff B, Rempel D


Wednesday, 29 August, 16:00-17:30, HIM Lecture Room
WC2S Manual handling of patients in the European Union


Dr. Sue Hignett
Director, Healthcare Ergonomics and Patient Safety Research Unit (HEPSU)
Department of Human Sciences
Loughborough University


This symposium will present research about a range of issues related to manual handling of patients in health and social care provision. Healthcare staff, and in particular nursing staff, have been known to be a high risk group for manual handling risks and back problems for many years. The European Union issued a number of directives aimed at harmonising nursing education and health and safety issues, but relatively little evaluation has been published to look at the implementation and impact of these directives. The participants are members of the European Panel on Patient Handling Ergonomics (EPPHE), a network set up to support collaboration within the European Union to implement Manual Handling legislation in health and social care organisations. A previous EPPHE collaboration found that most of the participating countries implemented the EU Directive on Manual Handling within two years of issue but only three had national official patient handling guidance. The range of topics for this symposium will include evaluation of interventions, assessment tools, training and education, and organisational systems for manual handling in the patient journey.

Analysis of patient handling accidents in wards classified with MAPO index
Authors: Cotrim T, Simoes A, Ramalho F, Paes Duarte A
Presenter: Cotrim T

Are there any differences between the expected outcomes of patient handling interventions between health care and social care
Authors: Fray M, Hignett S
Presenter: Fray M

E-tutor, a new way of providing training in manual handling of patients
Authors: Hermans V
Presenter: Hermans V

Developing the teaching of ergonomics in health care education
Authors: Tamminen-Peter L
Presenter: Tamminen-Peter L

Providing a safer experience of manual handling in the bariatric patient journey
Authors: Hignett S, Griffiths P, Chipchase S, Tetley A
Presenter: Hignett S

Back-protective patient transfer (BPPT) - good practice of successful implementation of an ergonomics-based patient handling program
Authors: Caffier G, Hermann S, Babel F, Liebers F, Schützel G
Presenter: Caffier G


Wednesday, 29 August, 16:00-17:30, Amphitheater
WC3S Inflammatory factors in the development of musculoskeletal disorders


Eira Viikari-Juntura, DMedSc, MD, Professor
Director, Musculoskeletal Centre
Health and Work Ability
Finnish Institute of Occupational Health


Many factors play a role in the etiology of Musculoskeletal disorders (MSDs). Some recent studies suggest that inflammatory factors may play a role in common MSDs that were earlier thought as non-inflammatory. Inflammatory factors are associated with metabolic and lifestyle factors, such as weight-related factors, smoking and physical exercise. They may therefore be at least partly modifiable. Better understanding of their role and possible interactions with physical work loads will help to target preventive measures against MSDs.

Inflammatory mechanisms in musculoskeletal disorders
Authors: Karppinen J
Presenter: Karppinen J

Cardiovascular and lifestyle risk factors in low back and sciatic pain: a systematic review
Authors: Shiri R, Karppinen J, Leino-Arjas P, Solovieva S, Varonen H, Kalso E, Ukkola O, Viikari-Juntura E
Presenter: Shiri R

Role of inflammatory and metabolic factors in shoulder disorders
Authors: Viikari-Juntura E, Shiri R, Solovieva S, Karppinen J, Leino-Arjas P, Varonen H, Kalso E, Ukkola O
Presenter: Viikari-Juntura E

Association between carotid intima-media thickness and sciatica
Authors: Shiri R, Viikari-Juntura E, Leino-Arjas P, Vehmas T, Varonen H, Moilanen L, Karppinen J, Heliövaara M
Presenter: Shiri R

Addressing inflammatory mechanisms in epidemiological studies
Authors: Solovieva S
Presenter: Solovieva S


Thursday, 30 August, 10:30-12:00, Amphitheater
RA1S Musculoskeletal disorders: mechanisms of injury


David Rempel, MD, MPH
Professor of Medicine
Director, Ergonomics Program
University of California, San Francisco


Recently, a number of animal models have been developed to investigate mechanisms of injury to tendon, muscle, and nerve due to repetitive loading. The models use both volitional and nonvolitional loading at physiologic levels. A mixture of structural and biochemical outcomes are studied. Investigators will present their models and summarize the key findings regarding mechanisms of injury. When possible, investigators will discuss the relative contribution of the biomechanical factors responsible for injury and translate the findings into lessons for preventing or managing musculoskeletal injuries among workers performing hand intensive tasks.

Behavioral declines and tissue pathophysiology in a rat model of WMSD respond to anti-inflammatory and ergonomic interventions
Authors: Barr A, Barbe M
Presenter: Barr A

Decreased adaptive and inflammatory responses as a consequence of aging contribute to injury and sickness response in a rat model of WMSD
Authors: Barbe M, Barr A
Presenter: Barbe M

Repetitive exposures of stretch-shortening cycles affects muscle performance differentially with age
Authors: Cutlip R, Baker B, Mercer R, Kashon M, Alway S
Presenter: Cutlip R

Effects of a repetitive moderately forceful pinching task on sensory nerve conduction velocity: a primate model of carpal tunnel syndrome
Authors: Sommerich C, Lavender S, Buford J, Korkmaz S, Banks J, Pease W
Presenter: Sommerich C

Contributions of repetition rate and peak force to microtears and growth factor density in a rabbit model of epicondylitis
Authors: Rempel D, Nakama L, King K
Presenter: Rempel D


Thursday, 30 August, 10:30-12:00, Rotunda
RA2S Physical activity programmes in the secondary prevention of musculoskeletal disorders


Allard van der Beek, PhD
Department of Public and Occupational Health
EMGO Institute
VU University Medical Center, and Body@Work TNO VUmc

Other organizers:

Claire Bernaards, PhD
Department of Public and Occupational Health
VU University Medical Center & Body@Work
Research Center Physical Activity, Work & Health, TNO VUmc

Gisela Sjøgaard, PhD
National Institute of Occupational Health


Musculoskeletal disorders (MSD) are common in many countries, leading to substantial costs due to decreased productivity, sick leave, chronic disability for work and medical costs. In the United States, Canada, Finland, Sweden, and England, MSD are the primary cause of work absenteeism and disability (Punnett and Wegman 2004). In the Netherlands, the total yearly costs of neck and upper limb symptoms were recently estimated at 2.1 billion euros (Blatter et al. 2006).

MSD may result from an imbalance between workload and capacity. In theory, physical activity and physical exercise might reduce to risk of MSD by improving muscle functioning and oxidative capacity. However, physical activity and physical exercise intervention studies show mixed results as to their effects on work-related MSD outcomes. Possibly the effectiveness of physical activity and physical exercise on MSD outcomes differs between various body regions (e.g. low back, neck/shoulder, arm/wrist/hand). Furthermore, differences in type, duration, intensity and frequency of interventions might explain part of the differences. There is a need to clarify the mixed results and to identify successful components of physical activity and physical exercise interventions in the prevention of work-related MSD.

Effects on musculoskeletal health and capacity of a one year physical activity intervention among office workers
Authors: Pedersen M, Andersen L, Jørgensen M, Blangsted A, Hansen E, Sjøgaard G
Presenter: Pedersen M

The effectiveness of a work style intervention and a lifestyle physical activity intervention on the recovery from neck and upper limb symptoms in computer workers
Authors: Bernaards C, Hildebrandt V
Presenter: Bernaards C

Physical training in rehabilitation on trapezius myalgia among office workers: effects on pain perception and shoulder function
Authors: Sjøgaard G, Andersen LL, Nielsen PK, Søgaard K
Presenter: Sjøgaard G

Long-term effects of neck muscle training among Finnish women with non-specific neck pain: results of 36 months follow-up
Authors: Takala E-P, Ylinen J, Häkkinen A, Nykänen M, Kautiainen H
Presenter: Takala E-P

Cost-effectiveness of physical training for self-employed persons with musculoskeletal disorders: preliminary results
Authors: Heinrich J, Blatter B, Anema H, Bongers P
Presenter: Heinrich J

Role of physical relaxation exercise for reduction of ergonomic health problems among workers in diamond polishing industry
Authors: Jani V
Presenter: Jani V

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