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Coenen, P. (author), Kingma, I. (author), Boot, C.R.L. (author), Faber, G.S. (author), Xu, X. (author), Bongers, P.M. (author), van Dieën, J.H. (author)This study aimed to develop, compare and validate two versions of a video analysis method for assessment of low back moments during occupational lifting tasks since for epidemiological studies and ergonomic practice relatively cheap and easily applicable methods to assess low back loads are needed. Ten healthy subjects participated in a protocol...article 2011
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Wiefferink, C.H. (author), Detmar, S.B. (author), Coumans, B. (author), Vogels, T. (author), Paulussen, T.G.W. (author), TNO Kwaliteit van Leven (author)The aim of this study is to identify the social psychological determinants of the use of performance-enhancing drugs by gym users who practice bodybuilding, fitness, powerlifting or combat sports. In this questionnaire-based study, 144 respondents answered questions on their actual use and intention to use such drugs and also on their background...article 2008
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Boshuizen, H.C. (author), Stemmerik, L. (author), Westhoff, M.H. (author), Hopman-Rock, M. (author), TNO Kwaliteit van Leven (author)Elderly participants experiencing difficulty in chair rising and with a maximum knee-extensor torque below 87.5 N · m were randomized to different versions of a strength-training program for the knee-extensors: to a high-guidance group (HG; two group sessions supervised by a physical therapist and one unsupervised home session per week, n = 17),...article 2005
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TNO Kwaliteit van Leven (author), Luijsterburg, P.A.J. (author), Bongers, P.M. (author), de Vroome, E.M.M. (author)Objectives: The aim of this study was to investigate the effect of raised bricklaying on physical workload, reported musculoskeletal disorders, sickness absence, and job satisfaction. Methods: A controlled intervention study with a follow-up period of 10 months was performed among 202 bricklayers from 25 construction companies. Results: The...article 2005
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TNO Preventie en Gezondheid (author), van den Heuvel, S.G. (author), Ariëns, G.A.M. (author), Boshuizen, H.C. (author), Hoogendoorn, W.E. (author), Bongers, P.M. (author)This study aimed at determining the prognostic factors related to the recurrence of low-back pain and future sickness absence due to low-back pain. Data were used from a prospective cohort study in a working population with a three year follow-up period. They were collected with annual questionnaires. A generalised estimating equation model was...article 2004
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de Looze, M.P. (author), Steenhuizen, S. (author), Boeken-Kruger, M.C. (author), Baten, C.T.M. (author), Kingma, I. (author), van Dieën, J.H. (author)People who know the actual mass of an object to be lifted normally prepare themselves before attempting a lift to control the movement and to minimize low back loading. In this study, the trunk muscular reactions and low back torque were investigated in the situation in which the individual did not know the actual mass but only had some idea of...article 2000
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de Looze, M.P. (author), Groen, H. (author), Horemans, H. (author), Kingma, I. (author), van Dieën, J.H. (author), TNO Preventie en Gezondheid (author)In lifting, the abdominal muscles are thought to be activated to stabilize the spine. As a detrimental effect, they contribute to spinal compression. The existing literature is not conclusive about the biological relevance of this effect. From biological, mechanical and anatomical considerations it was hypothesised that the relative abdominal...article 1999