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Document ID (ISN)111685
CIS number 11-0434
ISSN - Serial title 0169-8141 - International Journal of Industrial Ergonomics
Year 2011
Convention or series no.
Author(s) DiDomenico A., Nussbaum M.A.
Title Effects of different physical workload parameters on mental workload and performance
Bibliographic information 2011, Vol.41, p.255-260. Illus. 31 ref.
Abstract The design and evaluation of an occupational task should include an assessment of mental workload, since excessive levels of mental workload can cause errors or delayed information processing. Physically demanding work that is performed concurrently with a cognitive task may impact mental workload by impairing mental processing or decreasing performance. The objective of this study was to determine whether there is a differential effect of various types of physical activity on both mental workload and cognitive performance. Objective and subjective assessment tools (heart rate variability and visual analogue scale) were used as indicators of mental workload, while correct responses during an arithmetic task reflected levels of performance. Thirty participants performed a combination of tasks involving both physical and mental workload. Changes in subjective ratings generally corresponded to changes in both performance on the arithmetic task and objective mental workload assessment. Some discrepancies occurred at the highest physical force exertion level as participants perceived an increase in effort to maintain the same level of performance.
Descriptors (primary) physical workload; mental workload; cognitive performance; ergonomics
Descriptors (secondary) muscular strength; heart rate monitoring; subjective assessment; statistical evaluation
Document type D - Periodical articles
Subject(s) Occupational physiology
Broad subject area(s) Physiology, ergonomics
Browse category(ies) Mental workload