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1st PEROSH Research Exchange in Warsaw Thursday 22. October 2015 Bo Veiersted

This presentation evaluates if physical work exposure is related to changes in perceived work ability, with a focus on the elderly population. The study includes construction and healthcare workers and utilizes questionnaires and technical measurements.

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1st PEROSH Research Exchange in Warsaw Thursday 22. October 2015 Bo Veiersted

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  1. 1st PEROSH Research Exchange in Warsaw Thursday 22. October 2015 Bo Veiersted Lars-Kristian Lunde Markus Koch Morten Wærsted Stein Knardahl Stami, Oslo, Norway bove@stami.no Is the relation between physical work exposure and self-reported work ability dependent on age?

  2. Outline: • Background • Methods • Preliminary results • Discussion

  3. Background

  4. Background The elderly part of the population increases Many countries have increased the retirement age - or are planning to do so These trends will increase demands on the working life, either by reducing harmful work exposures for all (to improve general work-related health) - or to make work places better fit to include elderly workers with reduced health This concern may particularly be directed towards physically demanding work, as in the construction and health sector The aim of this presentation is to evaluate if physical work exposure related to perceived work ability changes by age

  5. Methods

  6. Material/ methods • Subjects • 293 construction workers (93% male) • technical measurements of 64 subjects • 301 health care workers (21% male) • technical measurements of 63 subjects • Methods: • Questionnaire at baseline and every 6 months • Technical measurements during work • Ground reaction force by force insoles • Muscle activity in neck and back by electromyography • Activity and work postures by accelerometers • Heart rate by «Actiheart»

  7. Material/ methods • Subjects • 293 construction workers (93% male) • technical measurements of 64 subjects • 301 health care workers (21% male) • technical measurements of 63 subjects • Methods: • Questionnaire at baseline and every 6 months • Technical measurements during work • Ground reaction force by force insoles • Muscle activity in neck and back by electromyography • Activity and work postures by accelerometers • Heart rate by «Actiheart»

  8. Questionnaire • Mechanical work exposure (sum index, 0-13) • Relative duration of work causing faster breathing • Relative duration in awkward postures • Both have grading; never or short time, proxy ¼, ½, ¾ and most of working day (5 cat.) (SN, 2013) • Lifting 20 kg daily • Grading; never, 1-4, 5-19 and ≥20 times (4 cat.) (SN, 2013) • Perceived heavy work • How physical demanding do you perceive your usual work (grading; 0, 0.5, … 10, >10; anchors, 13 cat.) (RPE10, Borg 1978)

  9. Work ability and heart rate • Perceived work ability at present compared to your all time best • single question (graded; 0-10, 10 as best) (Nygård 2005) • Heart rate (HR) measured by «Actiheart» • Heart rate reserve (HRR) was calculated using minimum HR (during night), HR at work and age predicted maximal HR (Åstrand 2003, Tanaka 2001)

  10. Measurementsetup • Individual capacity: • Cycle ergometer test (Åstrand, 2003) • Isometric strength: • Arm abduction • Back extension • Hand grip After finished work day most equipment is removed - except 5 actigraphs to be kept on continuously for the next 4-5 days Actiheart Force insoles

  11. Preliminary results

  12. Correlation between work load, work ability and age – all participants Table 1 Spearman’s rho; ** p<0.01

  13. Mean work load and work ability- stratified by age group (SD, range) Table 2

  14. Work load and work abilityCorrelation between Perceived Work Ability (0-10) and work load measures Table 3 Spearman’s rho; * p<0.05, ** p<0.01

  15. Conclusions Reduced heavy work by age - indicated by both self-reports and a lower heart rate reserve during work A weak but significant negative correlation between self-reported mechanical work exposures / perceived heavy work - and work ability, (except for the youngest age group?) No consistent difference dependent on age

  16. Discussion… Acknowledgement to externalcolleagues: Andreas Holtermann Mikael Forsman Svend Erik Mathiassen

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