Journal
ERGONOMICS
Volume 57, Issue 11, Pages 1696-1710Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00140139.2014.952347
Keywords
force; perceived discomfort/pain/fatigue; subjective assessment; resumption time
Funding
- SBUF, the Swedish construction industry's organisation for research and development
- AFA Insurance
- Natural Sciences and Engineering Research Council of Canada (NSERC)
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Subjectively assessed endurance time (ET), resumption time (RT) and perceived discomfort, pain or fatigue (PD), and objectively measured maximum force-exerting capacity were investigated for varying loads and durations of a pushing task with two repeated trials. Beyond the main results quantifying how the load scenario affected ET, RT and PD, three additional results are of note: (1) although the maximum pushing force did not change between trials, shorter ET, longer RT and higher PD indicated accumulation of fatigue in Trial 2; (2) the PD ratings showed a trend with a linear increase during loading and a curvilinear decrease during recovery; and (3) the RT and the load level for different relative loading times were found to have an unexpected U-shaped relationship, indicating lowest fatigue at the intermediate load level. These results can be used to model a more sustainable and productive work-recovery ratio.
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